There are 385 values of n ∈{1,2,... ,500} that are a multiple of one or more of 5, 6, or 7.
To find the number of values of n that are a multiple of 5, divide 500 by 5 and round down: 500/5 = 100. There are 100 values of n that are a multiple of 5.
To find the number of values of n that are a multiple of 6, divide 500 by 6 and round down: 500/6 = 83. There are 83 values of n that are a multiple of 6.
To find the number of values of n that are a multiple of 7, divide 500 by 7 and round down: 500/7 = 71. There are 71 values of n that are a multiple of 7.
However, some values of n are multiples of more than one of 5, 6, or 7. To account for this, we need to add back the values of n that are multiples of 30, 35, 42, and 210 (the least common multiple of 5, 6, and 7).
To find the number of values of n that are a multiple of 30, divide 500 by 30 and round down: 500/30 = 16. There are 16 values of n that are a multiple of 30.
To find the number of values of n that are a multiple of 35, divide 500 by 35 and round down: 500/35 = 14. There are 14 values of n that are a multiple of 35.
To find the number of values of n that are a multiple of 42, divide 500 by 42 and round down: 500/42 = 11. There are 11 values of n that are a multiple of 42.
To find the number of values of n that are a multiple of 210, divide 500 by 210 and round down: 500/210 = 2. There are 2 values of n that are a multiple of 210.
Add the values from steps 1-3 and subtract the values from steps 5-8 to get the final answer: 100 + 83 + 71 - 16 - 14 - 11 - 2 = 385.
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A box contains 20 calculators, and two of them are defective. Three calculators are randomly selected from this box and inspected to determine whether each of them is good or defective. Is this experiment a binomial experiment? Why or why not? Explain your REASONING and provide EVIDENCE
Answer:It is a binomial experiment
Step-by-step explanation:
A binomial experiment is an experiment that has a fixed number of independent trials with only have two possible outcomes. This outcome could either be a yes or No.
example is when a coin is toss one can set it as either I will get a head or a tail.
The experiment is binomial because it has a fixed number of trial which is 3 calculator that has been picked,
It has two outcome which is either good or bad calculator and the each trial is independent of each other.
A triangle with side lengths of 200 meters, 300 meters, and 250 meters is shown. A surveyor measures the lengths of the sides of a triangular plot of land. What is the measure of the angle of the triangular plot at which the surveyor stands? Approximate to the nearest degree. Cos–1(0. 75) = 41° cos–1(0. 125) = 83° cos–1(0. 563) = 56° cos–1(0. 15) = 89°.
The measure of the angle at which the surveyor stands is approximately 41 degrees.To find the measure of the angle at which the surveyor stands, we can use the cosine rule.
The cosine rule relates the lengths of the sides of a triangle to the cosine of one of its angles. In this case, we have a triangle with side lengths of 200 meters, 300 meters, and 250 meters. Let's denote the angles opposite these sides as A, B, and C, respectively. Using the cosine rule, we have: cos(A) = (b^2 + c^2 - a^2) / (2bc). Let's calculate the cosine of angle A: cos(A) = (300^2 + 250^2 - 200^2) / (2 * 300 * 250) = (90000 + 62500 - 40000) / (150000) = 112500 / 150000 = 0.75. To find the measure of angle A, we can take the inverse cosine (cos^−1) of 0.75: A ≈ cos^−1(0.75) ≈ 41°.
Therefore, the measure of the angle at which the surveyor stands is approximately 41 degrees.
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What is the graph of y=3/4x-1?
Answer:
Here is a screenshot of my graph.
Step-by-step explanation:
Rate of change is found by using
2
Find the equation of a parabola with a vertex at (2, 4) and a known point at (-5, 2).
f (x) =
Answer:
f(x) = -²/₄₉(x - 2)² + 4Step-by-step explanation:
The vertex form of an equation of the parabola:
f(x) = a(x - p)² + q
vertex is (2, 4) so p = 2, q = 4
so:
f(x) = a(x - 2)² + 4
the parabola goes through the point (-5, 2) so x=-5, f(x)=2
2 = a(-5-2)² + 4
- 2 = a(49)
a = -²/₄₉
Therefore the equation of the parabola in vertex form:
f(x) = -²/₄₉(x - 2)² + 4
Four business class railcar in Acela Express has a total capacity of 260 passengers. How many passengers can travel per railcar
Answer:
65 passengers
Step-by-step explanation:
260 passengers for 4 railcars
find the unit rate = divide by 4
260/4=65 passengers per railcar
The distribution is symmetric. skewed. both symmetric and skewed.
The data distribution is skewed to the right. This is because the bars are clustered towards the left side of the histogram and taper off towards the right side.
The histogram of distances students live from school provided in the question shows that the majority of students in Tuan's homeroom live within a short distance of the school, with only a few students living farther away. The distribution is skewed to the right because the bars are clustered towards the left side of the histogram and taper off towards the right side. This indicates that there are fewer students who live farther away from school. A skewed distribution means that the data is not evenly distributed and tends to cluster towards one end. In this case, the distribution is skewed to the right because there are fewer students living farther away from school.
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Complete question is in the image attached below
Answer:
B. skewed.
Step-by-step explanation:
and then the next part is
1
hope this helps :)
Use the given vectors to find the specified
scalar
Use the given vectors to find the specified scalar. - 4) \( u=15 i+9 j \) and \( v=4 i-4 j \); Find \( u \cdot v \). A) 96 B) \( -36 \) C) 60 D) 24
The dot product \(u \cdot v\) is equal to 24. The magnitude of a vector \(u = a i + b j\) can be \(|u| = \sqrt{a^2 + b^2}\).
To find the scalar obtained by taking the dot product of vectors \(u\) and \(v\), we can use the formula:
\(u \cdot v = |u| \cdot |v| \cdot \cos(\theta)\),
where \(|u|\) and \(|v|\) represent the magnitudes of vectors \(u\) and \(v\), and \(\theta\) is the angle between the two vectors.
In this case, vector \(u\) is given as \(u = 15i + 9j\), and vector \(v\) is given as \(v = 4i - 4j\).
To calculate the dot product \(u \cdot v\), we need to find the magnitudes of \(u\) and \(v\) and the cosine of the angle between them.
The magnitude of a vector \(u = a i + b j\) can be calculated as:
\(|u| = \sqrt{a^2 + b^2}\).
For vector \(u = 15i + 9j\), the magnitude \(|u|\) is:
\(|u| = \sqrt{15^2 + 9^2} = \sqrt{225 + 81} = \sqrt{306}\).
Similarly, for vector \(v = 4i - 4j\), the magnitude \(|v|\) is:
\(|v| = \sqrt{4^2 + (-4)^2} = \sqrt{16 + 16} = \sqrt{32}\).
Next, we need to find the cosine of the angle between vectors \(u\) and \(v\). The cosine of an angle can be calculated using the dot product formula:
\(\cos(\theta) = \frac{u \cdot v}{|u| \cdot |v|}\).
Substituting the values, we have:
\(\cos(\theta) = \frac{(15 \cdot 4) + (9 \cdot (-4))}{\sqrt{306} \cdot \sqrt{32}} = \frac{60 - 36}{\sqrt{306} \cdot \sqrt{32}} = \frac{24}{\sqrt{306} \cdot \sqrt{32}}\).
Finally, to find the dot product \(u \cdot v\), we can multiply the magnitudes \(|u|\) and \(|v|\) with the cosine of the angle:
\(u \cdot v = |u| \cdot |v| \cdot \cos(\theta) = \sqrt{306} \cdot \sqrt{32} \cdot \frac{24}{\sqrt{306} \cdot \sqrt{32}} = 24\).
Therefore, the dot product \(u \cdot v\) is equal to 24.
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A triangle has three sides of the following side lengths: 7, 10, and x^2. What are all of the positive integer values of x such that the triangle exists? Separate your answers using commas and express them in increasing order.
Answer:
x = {2,3,4} (if x can only be positive whole numbers)
Step-by-step explanation:
For a triangle exists, the side lengths of the triangle must be such that the sum of the two shorter sides must be greater than the third side.
This also is equivalent to any two sides must have a sum greater than the third side.
So
7+10 > x^2, => x^2 < 17 => x < sqrt(17) (maximum)
7+x^2 > 10, => x^2 >3 => x > sqrt(3)
Therefore
sqrt(3) < x < sqrt(17)
If x must be an integer,
2< x < 4, or x = {2,3,4}
If f(x) = 3x^2 and g(x) = sqrt(2x), what is the value of (f o g)(8)?
If f(x) = 3x-4 and g(x) = x², find the value of f(3) - g(2)
Given f(x) = 3x-4
Then value of f at x=3 ⇒ f(3) = 3(3) -4 = 9-4 = 5
And Given g(x) = x²
Then value of g at x=2 ⇒ g(2) = (2)² = 4
The value f(3) - g(2) = 5 - 4 = 1
Therefore, the value of f(3) - g(2) is 1.
Out of 32 students in a class, 5 said they ride their bikes to school. Based on these results, how many of the of the
800 students in the school ride their bikes to school
Step-by-step explanation:
Given,
no. of students ride bikes to school = 5 students out of 32
no. of students ride bikes to school out of 800 students,
a/q the equation is,
\( \frac{800}{32} \times 5 = \frac{100}{4} \times 5 \\ \frac{500}{4} = 125\)
therefore, 125 out of 800 students rude bikes to school!
hope this answer helps you dear!
A hammock that hangs between two trees makes a parabola shape that has the equation y = 0.4(x- 3)² +1, where x is the distance from one end and y is the height above the ground, measured in meters.
A. What is the lowest point of the hammock?
B. If the hammock is attached to both trees at the same height, how far away are the trees from one another?
Answer:
A. The lowest point of the hammock is at the point 1 meters above the ground and 3 meters from one end of the hammock
B. The two trees are 6 meters away from one another
Step-by-step explanation:
The given equation of the parabola representing the hammock is as follows;
y = 0.4·(x - 3)² + 1
The general equation of a parabola is a·(x - h)² + k;
Where the coordinates of the vertex point of the parabola, which is the lowest (or highest, furthest) point on the vertex is (h, k) = (3, 1)
Therefore, we have;
A, The coordinates of the lowest point on the hammock is (3, 1)
Therefore, the lowest point of the hammock is at 1 meters above the ground and 3 meters from one end of the hammock
B. Given that the distance from one end is "x", we have;
The height at which the hammock is attached is given as the point where x = 0 as follows;
Given that the vertex of the parabola represents the axis of symmetry of the parabola, we have that the horizontal distance from one end of the hammock to the vertex point of the parabola that the hammock forms is (3 - 0) meters = 3 meters
Therefore, by the definition of symmetry, the distance from the vertex point to the other end of the parabola that the hammock forms is also 3 meters
From which we have, the distance the two trees are from one another is 3 meters + 3 meters = 6 meters.
What number is 16% of 80?
Write and solve an equation to answer the question.
Answer:
The answer is 12
Step-by-step explanation:
Trust me, kay? Please mark Brainliest!!!!
Answer:
12.8
Step-by-step explanation:
16% of 80
\(\frac{16}{100}\) × 80
\(\frac{16}{10}\) × 8
\(\frac{16}{5}\) × \(\frac{4}{1}\)
16 × 4
5
12\(\frac{4}{5}\) = 12.8
Tyler and Blake have rectangular pieces of paper with the same length and same width. They each cut their paper exactly in half. Tyler cuts his paper horizontally through the middle. Blake cuts his paper along a diagonal. Which student has the half piece of paper with the greater area?
The student that has the half piece of paper with the greater area is blake.
How to find the surface area of some object?Find the area that its outer surfaces possess. Sum of all those surfaces' area is the surface area of the considered object.
Given;
Tyler and Blake have rectangular pieces of paper with the same length and same width
Tyler cuts his paper horizontally through the middle
Blake cuts his paper along a diagonal
Now,
Let the length and breadth be y
Tylers half area= y*y/2=y^2/2
Blakes half area=1/2* \(\sqrt{3}\)y*\(\sqrt{3}\)y/2
=3y^2/4
Therefore, blakes piece of paper has more area.
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Using trig rations to find the missing side or angle of a right triangle
\(\\ \sf\longmapsto sin44=\dfrac{x}{48}\)
\(\\ \sf\longmapsto 0.69=\dfrac{x}{48}\)
\(\\ \sf\longmapsto x=48(0.69)\)
\(\\ \sf\longmapsto x=33.12\)
sinA=Perpendicular/Hypotenuse__________
\( \: \)
Sin (44°) = x/48
0.69 = x/48
x = 48•0.69
x ≈ 33.12
1.) Tyler runs 2/3 of a mile in 8 minutes. At this speed, how long will it take him to run one mile?
Answer:
12 minutes
Step-by-step explanation:
Since he ran 2/3 of a mile in 8 minutes, by dividing both sides by two we can see that he ran 1/3 in 4 minutes. 1/3 x 3 = 1 mile. 4 x 3 = 12 minutes
Answer:
1 mile in 12 minutes
Step-by-step explanation:
2/3 mile in 8 minutes
divide by 2
1/3 mile = 4 minutes
multiply by 3
1 mile in 12 minutes
How do you solve SSS theorem?
A SSS (side-side-side) theorem is kind of Congruence rule where two triangles with three congruent sides. So, we can solve it by showing the congruency between two triangles.
Statement: Side-Side-Side (SSS) ,the congruence theorem states that two triangles are congruent if three of their sides are equal to the corresponding sides of the other triangle.
Proof: Given, AB = DE, BC = EF, AC = DF.
To prove: ΔABC ≅ ΔDEF.
We know that the three sides of both triangles are equal in size and length. With both triangles superimposed, DE is placed on AB, EF is placed on BC, and DF is placed on AC. That is, AB = DE, BC = EF, AC = DF. Therefore, we can say that ΔABC ≅ ΔDEF.
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Imani is buying a new cell phone for $800.00. She has to put down
20% and finance the rest at an exact interest rate of 6% for 275
days. How much is the maturity value of her loan?
Use Green's Theorem to evaluate the following integral: Int C (ye^x-1)dx+e^x dy, where C is the semicircle through (0,-10) (10,0), and(0, 10).
The integrand is 0, the integral evaluates to 0. the integral over the curve C is also 0.
To use Green's Theorem to evaluate the integral, we must first find the partial derivatives of the functions inside the integral. The partial derivative of ye^x-1 with respect to y is e^x, and the partial derivative of e^x with respect to x is e^x.
Next, we need to subtract the partial derivatives and evaluate the integral over the region inside the curve C. The region inside the curve is a semicircle of radius 10 centered at the origin, so we can use polar coordinates to evaluate the integral.
The integral becomes Int R e^x - e^x dA, where R is the region inside the semicircle. In polar coordinates, this becomes Int 0 to pi Int 0 to 10 (e^(r*cos(theta)) - e^(r*cos(theta)))r dr d(theta).
Since the integrand is 0, the integral evaluates to 0. Therefore, the integral over the curve C is also 0.
So, using Green's Theorem, we can evaluate the integral Int C (ye^x-1)dx+e^x dy as 0.
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Which expression gives the closest estimate of 228 – 179?
Answer:
show the picture
Step-by-step explanation:
The closest estimate of 228 - 179 is 49.
What is subtraction?Subtraction is a mathematical operation. Which is used to remove terms or objects in the expression.
Given:
The two numbers are 228 and 179.
128 and 179 are real positive integers.
And here we have to find the subtraction of 179 to 228.
In other words,
the difference between 228 and 179 is,
228 - 179
= 49
To verify the equation:
179 + 49 = 228.
That means, 49 is the required number.
And 49 is the whole number.
S0, 49 is the closest estimate.
Therefore, 49 is the required expression.
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H:36 is the same ratio as a:e
Answer:
super find out how many of
4. Parallelogram TIME with diagonals MT
diagonals MT and EI intersect point S. If
MS = 4x +3 and ST = 5x – 4, find the measure of MT.
Answer: 62
Step-by-step explanation:
Can anyone pls help
Answer:
50
Step-by-step explanation:
if im thinking right
im SOO sorrYYy if its wrong
PLEASE SHOW THE SOLUTION CLEARLY WITH GOOD HAND WRITING OR
TYPING.
Solve the following homogenous differential equation (x² + y²)dx + 2xydy = 0
The given differential equation is a homogeneous equation of the first order. To solve it, we can use the substitution method. By letting y = vx, we can rewrite the equation and simplify it to a separable form.
After solving the resulting separable equation, we find the general solution in terms of x and y.
To solve the homogeneous differential equation (x² + y²)dx + 2xydy = 0, we can use the substitution method. Let's assume y = vx, where v is a function of x. Now, differentiate y with respect to x using the product rule: dy = vdx + xdv.
Substituting y = vx and dy = vdx + xdv into the given equation, we get (x² + (vx)²)dx + 2x(vx)(vdx + xdv) = 0.
Simplifying the equation, we have x²(1 + v²)dx + 2x²v^2dx + 2x³vdv = 0.
Combining like terms, we get x²(1 + v² + 2v^2)dx + 2x³vdv = 0.
This equation can be further simplified to (1 + 3v² + 2v^3)dx + 2xvdv = 0.
Now, we have a separable equation. We can separate the variables and integrate both sides to solve for v in terms of x. After finding v(x), we substitute it back into y = vx to obtain the general solution in terms of x and y.
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From 309 grams to 299 grams.
What is the percent of change? Round to the nearest whole percent.
Answer: 3 percent decrease. = 0% Increase or a 5 % decrease.
Step-by-step explanation: Sorry, I don't have an explanation!
The length of the base of an isosceles triangle is x. The length of the leg is 2x-2. The Perimeter of the triangle is 46. Find X.
Answer:
x = 10Step-by-step explanation:
The length of the base of an isosceles triangle is x. The length of the leg is 2x-2. The Perimeter of the triangle is 46. Find X.
2x - 2 + 2x - 2 + x = 46
5x - 2 - 2 = 46
5x = 50
x = 50 : 5
x = 10
The functions f(x)=−34x+214 and g(x)=(12)x+1 are shown in the graph. What are the solutions to −34x+214=(12)x+1? Select each correct answer.
The graphs cross at x=-1 and x=1. Those are the solutions to to the equation
How to explain the graphWe know that, If two functions are equal then there solution is the intersection point of the curves.
When we determine the graph the intersection points are (0,2) and (1,1.25).
The values of x of the intersection points are the solutions of the system
Using a graphing tool, there are two intersection points and therefore the solutions are x = -1 and x [ 1.
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Find the first four terms of the sequence given a1=18 and an+1=2+an2. A. 18, 10, 6, 5 B. 18, 10, 6, 9 C. 18, 14, 6, 9 D. 18, 10, 6, 4
The first four terms of the given sequence are 18, 10, 6, and 4 respectively.
What is a sequence?A sequence is an ordered list object which related and connected by a common value.
There are many sequences. They are Arithmetic sequence, Geometric sequence, and so on.
Calculation:It is given that,
The first term of the sequence is a1 = 18
And the terms of the sequence are related by,
a(n + 1) = (2 + an)/2
For n = 1;
a(1 + 1) = (2 + a1)/2
⇒ a2 = (2 + 18)/2 = 10
For n = 2;
a(2 + 1) = (2 + a2)/2
⇒ a3 = (2 + 10)/2 = 6
For n = 3;
a(3 + 1) = (2 + a3)/2
⇒ a4 = (2 + 6)/2 = 4
Thus, the first four terms of the given sequence are a1 = 18, a2 = 10, a3 = 6, and a4 = 4.
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60 minutes is 20% of
minutes.
Answer:
60 minutes is 20% of 300 minutes
Step-by-step explanation:
let x be the number of total minutes
60 = 20% of x
20% = 1/5
60 = 1/5x
multiply both sides by 5
300 = x
x = 300 minutes
Mason plays a game by flipping two fair coins. He wins the game if both coins land facing heads up. If Mason plays 300 times, how many times should he expect to win? Enter your answer in the box.
ANSWER ASAP !!!!!!!!!!!
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