The total number of holes Craigs need to have a score of 3 today is equal to 37.
On every every frisbee golf hole having a score 3 = one bonus.
Total scored while playing last week = 3 on 5 holes
Total extra bonus scored by Craig = 5
Getting extra bonus on total = 42 from score of 3
let us consider Craigs need 'x' holes on a score of 3 today
Required equation is,
x + 5 = 42
Subtract 5 from both the side of the equation we get,
⇒ x = 42 - 5
⇒ x = 37 holes
Therefore, Craigs need to have 37 holes to score a 3 today.
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Any helpers ? Will give brainliest
Answer:
y-intercept is -4
Step-by-step explanation:
Since we are not told what to find, we can find the y intercept of the given graph.
The y-intercept is the point where the curve cuts the y-axis. According to the graph shown, we can see that the curve cuts the y axis at y = -4. Hence the y-intercept of the graph will be -4
if you were informed that it takes one year for the earth to revolve around the sun, and that the square of that period was proportional to the cube of the earth's average distance from the sun, what law would fit that description?
Answer:kepler's 3rd law
Step-by-step explanation:
through (1, 2), slope = 7
Write the equation of a line in slope-intercept and standard form.Given 1 point and a slope
Answer:
The equation of line is as follows:
Slope-intercept form: \(y = 7x-5\)
Standard Form: \(-7x+y = -5\)
Step-by-step explanation:
Given that
Slope of line: 7
Point : (1,2)
Slope-intercept form of equation of line is given by:
\(y = mx+b\)
Here m is the slope and b is y-intercept.
Putting the value of slope
\(y = 7x+b\)
To find the value of b, we have to put the point in the equation
\(2 = 7(1) +b\\2 = 7+b\\2-7 = b\\b = -5\)
So the equation will be:
\(y=7x-5\)
The standard form of equation of line is:
\(Ax+By = C\)
To convert the equation in standard form, subtracting 7x from both sides
\(y-7x = 7x-5-7x\\-7x+y = -5\)
Hence, the equation of line is as follows:
Slope-intercept form: \(y = 7x-5\)
Standard Form: \(-7x+y = -5\)
The equation of a line in slope-intercept and standard form through (1, 2), slope = 7 is 7x - y = 5.
To find the equation of a line in slope-intercept and standard form.
First, we can write the equation in point-slope form. The point-slope formula states:
(y − y₁) = m (x − x₁)
Where m is the slope and
(x1, y1) is a point the line passes through.
Substituting the values from the problem gives:
(y − 2) = 7(x − 1)
Now, we need to convert to standard form.
The standard form of a linear equation is:
Ax + By = C
where, if at all possible,
A, B, and C are integers, and A is non-negative, and, A, B, and C have no common factors other than 1
We convert as follows:
y − 2 = (7 × x) − (7 × 1)
y − 2 = 7x − 7
−7x + y − 2 = − 7
Adding 2 in both side.
−7x + y − 2 + 2 = − 7 +2
-7x + y = -5
7x - y = 5
Therefore, the equation of a line in slope-intercept and standard form is 7x - y = 5.
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please help :) it would be cool if you helped
Answer:
Ummm
Step-by-step explanation:
So what do you need help with?
Find an equation for the line below. Thanks !
Answer:
\(\huge\boxed{y=\frac{1}{4}x + \frac{13}{4}}\)
Step-by-step explanation:
In order to find the equation to this line, we need to note that we see two points on this graph. Using these two points, we can use them to find the slope of the graph and use one to find the y-intercept.
We know that the slope of a line is defined by \(\frac{\Delta y}{\Delta x}\) (change in y / change in x). Therefore, we can use our two points that we know - (-5, 2) and (3, 4) to find the slope.
The change in y is \(4 - 2 = 2\), and the change in x is \(3 - (-5) = 3+5= 8\). Therefore, our slope is \(\frac{2}{8} = \frac{1}{4}\).
Now that we know our slope, our equation in slope-intercept form looks something like this.
\(y = \frac{1}{4}x + b\)
However, we still have b to solve for. We can solve for this by substituting a point we already know into the equation. Let's substitute (3, 4) inside.
\(4 = \frac{1}{4} \cdot 3+b\) \(4 = \frac{3}{4} + b\) \(b = \frac{16}{4}- \frac{3}{4}\) \(b = \frac{13}{4}\)So now we know that the y-intercept is \(\frac{13}{4}\). Plugging that into our equation finishes it off, leaving our final equation to be \(y = \frac{1}{4}x + \frac{13}{4}\).
Hope this helped!
Answer:
y= 1/4 + 13/4
Step-by-step explanation:
mark brainless please..
;-;
(did this question before)
lol
Need help on these questions. What are the values of x? Need step by step.
8x²=6x²+5x²
-7x²+6=x²-7x²
7x²+9x²=-6x²-7x
The values of x for the given equations are:
1. The value of x = 0
2. The values of x are ±1
3. The values of x are 0 and -7/16
What is an Equation ?An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.
To find the values of x in each of the equations, we need to simplify them using algebraic operations:
1. 8x² = 6x² + 5x²
Combining like terms on the right-hand side:
8x² = 11x²
Subtracting 6x² from both sides:
2x² = 0
Dividing both sides by 2:
x² = 0
Taking the square root of both sides:
x = 0
Therefore, the only solution to this equation is x = 0.
2.Similarly, we can calculate values of x for this equation:
-7x² + 6 = x² - 7x²
x² = 1
Taking the square root of both sides:
x = ±1
Therefore, the solutions to this equation are x = 1 and x = -1.
3. 7x² + 9x² = -6x² - 7x
x(16x + 7) = 0
Using the zero product property:
x = 0 or 16x + 7 = 0
Solving for x in the second equation:
16x = -7
Dividing both sides by 16:
x = -7/16
Therefore, the solutions to this equation are x = 0 and x = -7/16.
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In this polygon, all angles are right angles.
What is the area of the polygon? Show your work.
The area of the polygon is solved to be 1044 squared cm
How to find the are of the c]polygonThe area of the composite polygon is solved by dividing the object into two sections. Then adding up the areas
Section 1 has dimensions:
length * width = 46 * 14 = 644
section 2 has dimensions:
length = 46 - 21 = 25
width = 30 - 14 = 16
Area = 25 * 16 = 400
Area of the composite figure
section 1 + section 2
= 644 + 400
= 1044 squared cm
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Maris put trim around a mirror that is the shape of a square. Each side is 24 inches long. Maria has 1 foot of trim left. What was the length of the trim when she started? Write your answer in yards
Answer:
16.028 yards
Step-by-step explanation:
1 inch=0.0833333 foot
24 inches=0.0833333×24
=1.9999992 foot
The mirror is square shaped and each side is 24 inches
If each 24 inches=1.9999992 foot
Then,
4 sides of 24 inches=1.9999992×24
=47.9999808 foot
Maria has 1 foot of trim left
Total Length of trim when she started=47.9999808+0.0833333
=48.0833141 foot
=16.02777136667 yards
Approximately,
16.028 yards
I GIVE BRAINLIEST ANSWER QUICK
Solve the system below
x + 2y = -1
y = -3x - 8
A (2,-1)
B(-3,-l)
C(2,-2)
D (-3, 1
Answer:
It should be D.
Step-by-step explanation:
The sum of the digits of a two- digit number is 6. When we interchange the digits, the new number is 18 less than the original number. Find the original number.pls explain step by step
Answer:
42
Step-by-step explanation:
S1 let a and b be the digits of the number
so a 2 digit number cab written as - 10×a + b
eg - 68 as 6×10 + 8
S2 ) according to ques
a + b = 6 - eqn 1
(10×a + b) - (10×b + a) = 18
9×a - 9×b = 18
a - b = 2 - eqn 2
S3)from eqn 1 and eqn 2
we get a = 4 and b = 2
hence number is 42
If a varies directly with x squared, and a=12 when x=6 find the constant variation, k
Answer:
k = 1/3
Step-by-step explanation:
a = kx²
12 = k * 6²
k = 12/36
k = 1/3
Answer: k = 1/3
What is the domain of the function y= 2√x-6?
0-00
O 0
O 3
O 6≤x<∞
Given f(x)=2−∣x−5∣
Domain of f(x) is defined for all real values of x.
Since, ∣x−5∣≥0⟹−∣x−5∣≤0
⟹2−∣x−5∣≤2⟹f(x)≤2
Hence, range of f(x) is (−∞,2].
The domain of the function y= 2√x-6 is [6, ∞).
What is a function?A relation is a function if it has only One y-value for each x-value.
In the given function, we have a square root of x-6 which means that the value inside the square root must be non-negative, otherwise the function will not be real.
Therefore, we have x - 6 ≥ 0
Adding 6 to both sides, we get:
x ≥ 6
So, the domain of the function y = 2√(x-6) is all real numbers greater than or equal to 6.
In interval notation, we can write the domain as:
Domain: [6, ∞)
Hence, the domain of the function y= 2√x-6 is [6, ∞).
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hhhhhjklllkbvcccccgghhhjjughujhbhj
Step-by-step explanation:
give me brainly lsssssss
Sam runs 6 miles in 45 minutes. At the same rate, how many minutes would he take to run 4 miles?
Answer:
It would be 30 mph
Step-by-step explanation:
45/6=7.5
7.5*4=30
Answer:
30 minutes
Step-by-step explanation:
Each mile takes him 7 minutes 30 seconds. So you will do 7.5 x 4 to get 30 minutes
8. Sherry is going to the top of the wheelchair ramp, as shown in the diagram below.
(12.4)
(0,0) 1 2 3 4
7 8 9 10 11 12 13 14
What is the approximate total distance Sherry travels while she is on the ramp?
Round answer to the nearest tenth.
Record your answer and fill in the bubbles on your answer document.
Answer:
12.7 units
Step-by-step explanation:
Formula to get the distance between the two points \((x_1,y_1)\) and \((x_2,y_2)\) is,
d = \(\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\)
From the picture attached,
Sherry is at the origin(0, 0) and going to the top (12, 4)
Distance between these points will be,
d = \(\sqrt{(12-0)^2+(4-0)^2}\)
d = \(\sqrt{160}\)
d = \(4\sqrt{10}\)
≈ 12.7 units
Therefore, Sherry has to travel 12.7 units on the ramp.
When buying a new car, you have a choice of 4 different models, 3 different colors, and 2 different sizes. How many choices are there for one car? A. 5 B. 12 C. 16 D. 24
Someone pls help me with it. Promise I’ll give brainliest..
helppp asap Given:
Prove: ΔKVM ~ ΔBVG
Triangle KVM is similar to triangle BVG because angle M = angle G = 90° and angle V is common to both triangles.
What are similar triangles?Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio.
For two triangles to be similar, the corresponding angles must be congruent i.e equal.. Also the ratio of the corresponding sides of similar triangles are equal.
angle M and G are both 90° , this means they are equal.
angle KVM = BVG
therefore angle K = angle B
Since all the corresponding angles are equal, we can say triangle KVM is similar to triangle BVG
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Fulgurites are pieces of glass in the shape of a cylinder produced when lightning strikes sand. A student found a fulgurite with a height of 21 inches and a diameter of 6 inches. Which equation can be used to find V, the volume of the fulgurite in cubic inches?
Question 9 .
\(V = \pi(3)^2(21)\) is the equation that shows the volume of the given cylinder.
The following formula may be used to determine a cylinder's volume:
\(V=\pi r^2h\)
Where r is the radius of the cylinder's base, h is its height and is a mathematical constant that denotes the ratio of a circle's circumference to its diameter.
We must first determine the radius of the cylinder's base in order to utilize this formula to calculate the fulgurite's volume. The radius is equal to half of the base's diameter, or 3 inches since we know it to be 6 inches.
When we enter the values we are aware of into the formula, we obtain:
\(V = \pi(3)^2(21)\)
Therefore, the expression that represents the volume is \(V = \pi(3)^2(21)\)
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Question 2. Construct all the (isomorphism types of ) r-regular
graphs, for total nodes n = 1,2,3,4. (hint: 0 ≤r < n, e.g., when
n = 2, r can be 0 or 1.)
We have three vertices with degrees 0, 1, and 2. When n = 4, we have four vertices with degrees 0, 1, 2, and 3.
Constructing the isomorphism types of r-regular graphs:
An r-regular graph is a graph in which every vertex has r adjacent vertices, and the degree of every vertex is r. We can easily construct a graph by connecting the vertices together with edges. The problem is to determine the number of non-isomorphic r-regular graphs for total nodes n = 1, 2, 3, 4.
Using the Havel–Hakimi algorithm, we can create isomorphism types of r-regular graphs. The Havel–Hakimi algorithm is an algorithm for determining whether a given sequence of integers is graphical, which means whether there exists a finite simple graph with that degree sequence. This algorithm works by constructing a sequence of degree-preserving graph operations. Then, we can use the algorithm to produce the isomorphism types of r-regular graphs for total nodes n = 1, 2, 3, 4. For example, when n = 1, we have one vertex with degree 0. When n = 2, we have two vertices with degrees 0 and 1. When n = 3, we have three vertices with degrees 0, 1, and 2. When n = 4, we have four vertices with degrees 0, 1, 2, and 3.
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6. Monthly Mortgage payments can be found using the formula Below:
M-PG2)(1+1)"
(1+12"-1
M = monthly payment
P = amount borrowed
r=annual interest rate
n = number of monthly payments
The Ranallo family just bought a house. They qualified for an annual interest rate of 5.2% and their monthly payment
was $800 for a 30 year mortgage. Algebraically determine the amount of their loan to buy the house.
Answer: your equation is poorly written/wrong hence I used the equation below
answer : $289156.63
Step-by-step explanation:
applying the formula to calculate monthly repayment of Mortgage
M = P [ r(1+r)^n / ( ( 1+r )^n ) -1 ) ] ----- ( 1 )
M = Total monthly payment = 800 * 12 * 30 = $ 288,000
P = ?
r = 5.2% / 12 = 0.4%
n = 30 * 12 = 360 months
Back to equation 1
P = M / [ r(1+r)^n / ( ( 1+r )^n ) -1 ) ]
= 288000 / [ 0.004 ( 1.004)^360 / (( 1.004)^360 ) - 1 ) ]
= 288,000 / -0.996 = - $289156.63 ( It has a negative value because It is a loan borrowed )
Find the value of 9u +4 given that 7u-4=3.
Simplify your answer as much as possible.
9u + 4 = 1
Х
Answer:
• first get the value of u
\(7u - 4 = 3 \\ 7u = 3 + 4 \\ 7u = 7 \\{ \underline{ \: \: u = 1 \: \: }}\)
• find the value of 9u + 4:
\(9u + 4 = 9(1) + 4 \\ = 9 + 4 \\ { \underline{ \underline{ \: \: 13 \: \: }}}\)
Answer:
\(7u - 4 = 3 \\ 7u = 4 + 3 \\ 7u = 7 \\ u = \frac{7}{7} \\ \boxed{u = 1} \\\\f(u) = 9u + 4 \\ f(1) = 9(1) + 4 \\f(1) = 9 + 4 \\ \boxed{f(1) = 13 }\)
13 is the right answer.Consider angles x and y such that 0 \le y \le x \le pi/2 and sin(x+y) = 0.9 while sin(x-y) = 0.6. what is the value of (sin x + cos x)(sin y + cos y)?
Using trigonometric identities and algebraic manipulations, we derive an expression for sin x and cos x in terms of cos y. The value of (sin x + cos x)(sin y + cos y) is 2.49.
1. Start with the given equations sin(x+y) = 0.9 and sin(x-y) = 0.6.
2. Rewrite the equations using trigonometric identities. For sin(x+y) = 0.9, we have sin x cos y + cos x sin y = 0.9. For sin(x-y) = 0.6, we have sin x cos y - cos x sin y = 0.6.
3. Add the two equations together to eliminate the sin x cos y term: 2 sin x cos y = 1.5.
4. Divide both sides by 2 to solve for sin x cos y: sin x cos y = 0.75.
5. Square both sides of the equation to get (sin x cos y)^2 = 0.75^2. This gives us sin^2 x cos^2 y = 0.5625.
6. Use the trigonometric identity sin^2 x + cos^2 x = 1 to rewrite sin^2 x as 1 - cos^2 x: (1 - cos^2 x) cos^2 y = 0.5625.
7. Expand and rearrange the equation: cos^2 x cos^2 y - cos^4 x = 0.5625.
8. Use the identity cos^2 x = 1 - sin^2 x to substitute for cos^2 x: (1 - sin^2 x) cos^2 y - (1 - sin^2 x)^2 = 0.5625.
9. Expand and simplify: cos^2 y - sin^2 x cos^2 y - (1 - 2sin^2 x + sin^4 x) = 0.5625.
10. Combine like terms: cos^2 y - sin^2 x cos^2 y - 1 + 2sin^2 x - sin^4 x = 0.5625.
11. Rearrange the equation to isolate sin^2 x terms: sin^4 x - sin^2 x (cos^2 y + 2) + cos^2 y - 1 + 0.5625 = 0.
12. Combine like terms: sin^4 x - sin^2 x (cos^2 y + 2) + cos^2 y - 0.4375 = 0.
13. Solve the quadratic equation for sin^2 x: sin^2 x = [(cos^2 y + 2) ± √((cos^2 y + 2)^2 - 4(cos^2 y - 0.4375))] / 2.
14. Simplify the expression: sin^2 x = [(cos^2 y + 2) ± √(cos^4 y + 4cos^2 y + 4 - 4cos^2 y + 1.75)] / 2.
15. Further simplify: sin^2 x = [(cos^2 y + 2) ± √(cos^4 y + 5.75)] / 2.
16. Since 0 ≤ y ≤ x ≤ π/2, the value of cos y is positive. Therefore, cos^2 y + 2 is positive.
17. Thus, the equation simplifies to sin^2 x = (cos^2 y + 2 + √(cos^4 y + 5.75)) / 2.
18. Take the square root of both sides: sin x = √[(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2].
19. Since 0 ≤ y ≤ x ≤ π/2, the value of sin x is positive.
20. Therefore, sin x + cos x = √[(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2] + √(1 - sin^2 x).
21. Substituting the values of sin x and cos x, we have sin x + cos x = √[(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2] + √(1 - [(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2]).
22. Simplify the expression: sin x + cos x = √[(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2] + √[(2 - cos^2 y - √(cos^4 y + 5.75)) / 2].
23. Multiply the two terms: (sin x + cos x)(sin y + cos y) = √[(cos^2 y + 2 + √(cos^4 y + 5.75)) / 2] * √[(2 - cos^2 y - √(cos^4 y + 5.75)) / 2].
24. Simplify: (sin x + cos x)(sin y + cos y) = √[(cos^2 y + 2 + √(cos^4 y + 5.75))(2 - cos^2 y - √(cos^4 y + 5.75))] / 2.
25. Multiply the terms inside the square root: (sin x + cos x)(sin y + cos y) = √[4 - 2cos^2 y - 2√(cos^4 y + 5.75) + 4√(cos^2 y + 2) - 2cos^2 y + cos^4 y + 5.75] / 2.
26. Combine like terms: (sin x + cos x)(sin y + cos y) = √[5 + 2√(cos^2 y + 2) + 2cos^2 y - 2cos^2 y - 2√(cos^4 y + 5.75)] / 2.
27. Cancel out the common terms: (sin x + cos x)(sin y + cos y) = √[5 + 2√(cos^2 y + 2) - 2√(cos^4 y + 5.75)] / 2.
28. Simplify the expression: (sin x + cos x)(sin y + cos y) = √[5 - 2√(cos^4 y + 5.75) + 2√(cos^2 y + 2)] / 2.
29. The value of (sin x + cos x)(sin y + cos y) is 2.49.
Therefore, the value of (sin x + cos x)(sin y + cos y) is 2.49.
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In this problem, we use the product-to-sum trigonometric identities and the given information that sin(x+y) = 0.9 and sin(x-y) = 0.6 to find that the value of (sin x + cos x)(sin y + cos y) equals 1.5.
Explanation:In this problem, you're asked to find the value of (sin x + cos x)(sin y + cos y). Before we solve it directly, let's take advantage of the given information: sin(x+y) = 0.9 and sin(x-y) = 0.6.
To solve this, we can use the product-to-sum trigonometric identities: sin(A)+cos(A)sin(B)+cos(B) = sin(A+B)+sin(A-B). According to the problem, sin(x+y) = 0.9 and sin(x-y)=0.6. Therefore, we have 0.9 + 0.6 which results in 1.5. Thus, the value of (sin x + cos x)(sin y + cos y) equals 1.5.
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Guide Questions:
1. How do you saive for the area of the shaded region in figure A?
2. How do you solve for the area of the shaded region in figure B?
3. Is method finding the shaded region in figure A and B the same? Why? or Why not?
please answer on 3 i need answers for that number 3 questions
Answer:
1. The area is found by using the formula for a rectangle
The area is 150 cm²
2. The area is found by the definite integral for the area between two points under a curve
3. The methods are different
The methods are different because the area of figure A is found by the multiplication between the dimensions, while the area of figure B is found by the difference between the values of the integral of the function between the points
Step-by-step explanation:
1. The area of the shaded figure A is found by multiplying the dimensions of the figure, which is the length multiplied by the breadth of the figure
From the question, we have;
The area of the rectangular figure, A = Length × Breadth
The length of the figure = 15 cm
The breadth of the rectangular figure = 10 cm
Therefore, we have;
A = 15 cm × 10 cm = 150 cm²
The area of the rectangular figure, A = 150 cm²
2. The bell shape of the figure B is obtained from a function f(x) as obtained from MIT mathematics website as follows;
\(f(x) = e^{-t^2}\)
Therefore the area of the shaded region in the bell shaped figure between the points 0 and 1 on the x-axis is found by integration as follows;
\(A = \int\limits^1_0 {e^{-t^2}} \, dt = \dfrac{1}{2} \cdot \sqrt{\pi} \times erf(t)\)
Using a graphing calculator, we have;
\(A = \int\limits^1_0 {e^{-t^2}} \, dt \approx 0.746824\)
3. The method of finding the area of figure A is different from the method of finding the area of the figure B
The methods are different because the area of figure A is the area of the whole figure of a geometric shape with known formula for area while the area of of the shaded region has no predefined formula but is calculated using the calculus for the area under a curve.
for a binomial probability distribution with 8 trials and probability of success equal 0.95. what is probability of exactly six successes? (use the binomial tables)
0.0515 is probability of exactly six successes .
What is probability in math?
Probability refers to potential. The subject of this area of mathematics is the occurrence of random events. The range of the value is 0 to 1. To forecast how likely events are to occur, probability has been introduced in mathematics.Binomial probability with
Number of trials (n) = 8
probability of success ( ρ ) = 0.95
ρ = 0.95
p + q = 1
q = 1 - p
= 1 - 0.95
q = 0.05
x ~ bin( n , ρ )
ρ( X = x ) = ⁿCₓ Pˣ . qⁿ⁻ˣ
the probability of exactly six success .
ρ ( X = 6 ) = ⁸C₆ ( 0.95)⁶ ( 0.05 )⁸ ⁻⁶
= 28 ( 0.7351 ) ( 0.05)²
= 28 ( 0.7351 ) ( 0.0025 )
= 0.051457
ρ( X = 6 ) = 0.0515
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The vertices of ∆ABC are A(7,3),B(−8,6),C(0,−5). If ∆ABC is translated along the vector <−9,5>, what are the coordinates of the vertices of ∆A'B'C' ?
Answer:
The coordinates of the vertices of \(\bigtriangleup A'B'C'\) are \(A'=(-2,8)\), \(B'=(-17,-4)\) and \(C'=(-9,0)\).
Step-by-step explanation:
Let be \(A =(7,3)\), \(B = (-8,6)\) and \(C = (0,-5)\) the vertices of the original triangle, as well as \(\vec t = \left<-9, 5\right>\), the coordinates of the vertices of the new triangle are, respectively:
\(A' = A + \vec t\)
\(A' = (7,3)+(-9,5)\)
\(A' = (7-9,3+5)\)
\(A'=(-2,8)\)
\(B' = B + \vec t\)
\(B' = (-8,6)+(-9,5)\)
\(B' = (-8-9,-9+5)\)
\(B'=(-17,-4)\)
\(C' = C + \vec t\)
\(C' = (0,-5)+(-9,5)\)
\(C' = (0-9,-5+5)\)
\(C'=(-9,0)\)
The coordinates of the vertices of \(\bigtriangleup A'B'C'\) are \(A'=(-2,8)\), \(B'=(-17,-4)\) and \(C'=(-9,0)\).
I got 27 Points wit a brainliest...Write each phrase as an expression. Then find the sum of the expressions.
9 increased by a number x
Expression:
a number x more than −12
Expression:
the difference of 6 and a number x
Expression:
The sum of the expressions is
Answer:
Step-by-step explanation:
9 increased by a number x
Expression: 9 + x
a number x more than −12
x + ( -12 )
Expression:6- x
Relaciona correctamente cada número con sus respectivos múltiplos: 1) 14135 2) 11234125723 A) múltiplo de 3 B) múltiplo de 5 C) múltiplo de 11
Answer:
1) 14135 = B) múltiplo de 5 C) múltiplo de 11
Step-by-step explanation:
Para saber si un numero es un multiplo de otro simplemente tenes que dividir el otro numero por el primero y si el resultado es un numero entero (sin resto y que no es un decimal) entonces es un multiplo de ese numero. En esta pregunta el primer numero (14135) es multiplo de 5 y de 11 por que al dividir no quedan restos, pero no es multiplo de 3 por que si quedan restos.
14135 / 3 = 4,711.666
14135 / 5 = 2,827
14135 / 11 = 1,285
El segundo numero (11234125723) no es multiplo de ninguna de las opciones por que todos dejan restos.
11,234,125,723 / 3 = 3,744,708,574.33333
11,234,125,723 / 5 = 2,246,825,144.6
11,234,125,723 / 11 = 1,021,284,156.636363
Assume that the random variable X has the first, second, third and fourth moments given as 1, 2, 3, and 4 respectively and let Y = a + bX+cX². Find the correlation coefficient p(X, Y).
The correlation coefficient between X and Y for the given moments is equal to (b + c) / √(b²(1 + 2c) + 2bc²).
Y = a + bX+cX²
To find the correlation coefficient between two random variables X and Y,
Calculate their covariance and standard deviations.
Find the covariance between X and Y.
The covariance between X and Y is ,
cov(X, Y) = E[(X - E[X])(Y - E[Y])]
To calculate this, find the expected values E[X] and E[Y].
Since we are given the first four moments of X,
Use them to find the mean (E[X]) and the variance (Var[X]) of X,
E[X]
= μ
= 1
Var[X]
= E[X²] - (E[X])²
= 2 - 1²
= 2 - 1
= 1
Now let us find E[Y],
E[Y] = E[a + bX + cX²]
= a + bE[X] + cE[X²]
To calculate E[X²], use the second moment of X,
E[X²] = 2
Substituting these values, we have,
E[Y] = a + b(1) + c(2)
Now calculate the covariance,
cov(X, Y)
= E[(X - E[X])(Y - E[Y])]
= E[X·Y - X·E[Y] - E[X]·Y + E[X]·E[Y]]
= E[X·Y] - E[X]·E[Y] - E[X]·E[Y] + E[X]·E[Y]
= E[X·Y] - E[X]·E[Y]
The second moment of XY,
E[XY]
= E[(a + bX + cX²)X]
= E[aX + bX² + cX³]
= aE[X] + bE[X²] + cE[X³]
To calculate E[X³], use the third moment of X,
E[X³] = 3
Substituting these values, we have,
E[XY]
= aE[X] + bE[X²] + cE[X³]
= a(1) + b(2) + c(3)
= a + 2b + 3c
Finally, substitute the expressions for E[XY] and E[X]·E[Y] back into the covariance formula to obtain,
cov(X, Y)
= E[XY] - E[X]·E[Y]
= (a + 2b + 3c) - (1)(a + b(1) + c(2))
= a + 2b + 3c - a - b - 2c
= b + c
Next, calculate the standard deviations of X and Y.
The standard deviation of X is the square root of the variance,
σ(X)
= √Var[X]
= √1
= 1
The standard deviation of Y can be calculated as follows,
Var[Y]
= Var[a + bX + cX²]
= Var[bX + cX²]
= b²Var[X] + c²Var[X²] + 2bcCov[X, X²]
Var[X] and Var[X²] from the given moments,
Var[X] = 1
Var[X²]
= E[X⁴] - (E[X²])²
= 4 - 2²
= 4 - 4
= 0
Substituting these values, we have,
Var[Y]
= b²Var[X] + c²Var[X²] + 2bcCov[X, X²]
= b²(1) + c²(0) + 2bcCov[X, X²]
= b² + 2bcCov[X, X²]
Since Cov[X, X²] = b + c, substitute this back into the equation,
Var[Y]
= b² + 2bc(b + c)
= b² + 2b²c + 2bc²
= b²(1 + 2c) + 2bc²
The standard deviation of Y is the square root of the variance,
σ(Y)
= √Var[Y]
= √(b²(1 + 2c) + 2bc²)
Finally, calculate the correlation coefficient,
p(X, Y)
= cov(X, Y) / (σ(X) · σ(Y))
= (b + c) / (1 · √(b²(1 + 2c) + 2bc²))
= (b + c) / √(b²(1 + 2c) + 2bc²)
Therefore, the correlation coefficient between X and Y is given by (b + c) / √(b²(1 + 2c) + 2bc²).
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Three semicircles of radius 1 are constructed on diameter $\overline{AB}$ of a semicircle of radius 2. The centers of the small semicircles divide $\overline{AB}$ into four line segments of equal length, as shown. What is the area of the shaded region that lies within the large semicircle but outside the smaller semicircles
Therefore , the solution of the given problem of surface area comes out to be unused space is equal to 2π - (5π/6 + √3/2) m² .
Surface area definitionIts surface area serves as a proxy for how much overall space it occupies. The whole environment of a three-dimensional shape is taken into account when calculating its surface area. The overall size of something is its surface area. The volume of water in a cuboid can be determined by summing the face on each of the six rectangular sides. To determine the box's measurements, apply the following formula: For 2lh, 2lw, & 2hw, the surface is exactly the same (SA). The region is represented by the surface area of the muti form.
Here,
Given:
AB = D = 4 m (R = 2 m)
The size of the AB semicircle is:
=> Area = πr²/2
=>A = 2π
The dimensions of the little semicircle are a=5/6 + 2/3/2 m2 and a=5/6 + 3/2 m2.
The remainder area is therefore equal to A- a.
= 2π - (5π/6 + √3/2) m²
The unused space is equal to 2π - (5π/6 + √3/2) m²
Therefore , the solution of the given problem of area comes out to be unused space is equal to 2π - (5π/6 + √3/2) m² .
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