Answer:
5/8
Step-by-step explanation:
For khan the full correct answer is Shrinks by 5/8.
Every second, the horizontal velocity of the ball shrinks v by a factor of 5/8.
What is a Function?A function is a law that relates a dependent and an independent variable.
The horizontal velocity in relation with elapse time is given by
\(\rm V(t) = 4 x(\dfrac{5}{8})^t\)
The rate of change of the the horizontal velocity of the ball is given by \(\rm (\dfrac{5}{8})^t\)
Every second, the horizontal velocity of the ball shrinks v by a factor of
\(\rm (\dfrac{5}{8})^1\)
= (5/8)
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Which of the following is a step used in the construction of an equilateral triangle inscribed in a circle?
Connect all six points on the circle.
Draw two line segments connecting the points where the arc intersects the circle and an endpoint of the diameter.
Construct two diameters using the points where the arc intersects the circle and the center.
Connect the endpoints of the two diameters.
The one that is a step used in the construction of an equilateral triangle inscribed in a circle is:
B. draw two line segments connecting the points where the arc intersects the circle and an endpoint of the diameter
How to construct an equilateral triangle?The steps to construct an equilateral triangle inscribed in a circle are:
1. Draw a point that will be the center of the circle. Label this "point O". Technically, it doesn't matter which character you use to represent a point.
2. Draw a perfect circle centered at point O using a compass.
3. Use a ruler to draw a straight vertical line through point O. Extend this line beyond the boundaries of the circle. 4) Draw a point where the line and the circle intersect. Label the bottom point "Point W" and the top point "Point X".
5) Draw a second circle. The center of this circle is point W and the radius extends to point O.
6) Mark both places where the two circles intersect. Label the left point "Point Y" and the right point "Point Z".
7) Connect the points X, Y and Z with a ruler or straightedge.
Looking at the options, the only correct step is:
B. draw two line segments connecting the points where the arc intersects the circle and an endpoint of the diameter
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For the graph of the function y = f(x), find the absolute maximum and the absolute minimum, if it exists.
An absolute maximum point is a point where the function obtains its greatest possible value. Similarly, an absolute minimum point is a point where the function obtains its least possible value.
From the graph provided, we can see a point on the graph that represents the lowest point. This point is at (1, 2). This point is the absolute minimum point.
The absolute maximum value cannot be determined from the graph. This is because the graph continues to increase as we move towards positive infinity, it does not stop at a particular point. Therefore, we don't have an absolute maximum value from the graph.
Therefore, the answer is: Absolute maximum: none; Absolute minimum: f(1) = 2.
The FIRST OPTION is the correct option.
Please help me solve this!! I will give brainliest and this is due in 10 minutes
There's a big soccer game next month, and Juan has purchased 3 tickets for himself and his siblings. He spent 53 dollars.
Rosie wants to take her family also, but knows her parents and some cousins will want to attend as well. She knows she will have to purchase 9 tickets. Estimate approximately how much money Rosie will likely have to spend on the tickets. Explain your reasoning below.
Answer:
53 divided by 3 would be $17.66
so 17.66 times 9 would be $158.94
Answer:
158.4 dollars
Step-by-step explanation:
so first of all the three tickets were 53 dollars so we divide the dollars and the no of tickets like this 53÷3 = 17.6 dollars
so since each ticket is 17.6 dollars now we know that Rosie wants to purchase 9 tickets so we will multiply the no of tickets by dollars per ticket like this
9×17.6= 158.4 dollars
and 158.4 is your answer
Can you step by step solve 20x+12=4x-16
Answer:
x = - \(\frac{7}{4}\)
Step-by-step explanation:
Given
20x + 12 = 4x - 16 ( subtract 4x from both sides )
16x + 12 = - 16 ( subtract 12 from both sides )
16x = - 28 ( divide both sides by 16 )
x = \(\frac{-28}{16}\) = - \(\frac{7}{4}\) [ = - 1.75 ]
Tom's annual salary is $67,400. a) What is his monthly salary? b)What is his weekly
salary?
Answer:
Monthly salary: $5,617; Weekly salary: $1,296
Step-by-step explanation:
Since there are 12 months in a year, you would divide the number of months by the salary.
67400/12x≈5617
The monthly salary is about $5,617.
Since there are about 52 weeks in a year, you would divide the number of weeks by the salary.
67400/52x≈1296
The weekly salary is about $1,296.
Please make sure the answer is right I only have 6 questions help?
Answer:
i told you the answer is -8
Answer:all
recall that the inside angles of a triangle add up to 180
Step-by-step explanation:
now add up all the angles and make it equal to 180 :)
as follows
X+58+45+85 = 180
now use algebra ... and solve for X :)
X = 180-58-45-85
my calculators tells me....
X = -8
what does that answer mean?
it's saying ... like this 58-8 is that angle.. does that help ? :)
Help please I am in dire need
Answer:
Answer is d=9t.
Step-by-Step:
4.5/.5=9
6.75/.75=9
13.5/1.5=9
The graph of a quadratic function having the form f(x) = ax? + bx + c passes
through the points (0, -8), (3, 10), and (6,34). What is the value of the function
when x = -3?
Answer:
f(-3) = -20
Step-by-step explanation:
We observe that the given x-values are 3 units apart, and that the x-value we're concerned with is also 3 units from the first of those given. So, a simple way to work this is to consider the sequence for x = 6, 3, 0, -3. The corresponding sequence of f(x) values is ...
34, 10, -8, ?
The first differences of these numbers are ...
10 -34 = -24
-8 -10 = -18
And the second difference is ...
-18 -(-24) = 6
For a quadratic function, second differences are constant. This means the next first-difference will be ...
? -(-8) = -18 +6
? = -12 -8 = -20
The value of the function at x=-3 is -20.
_____
The attachment shows using a graphing calculator to do a quadratic regression on the given points. The graph can then be used to find the point of interest. There are algebraic ways to do this, too, but they are somewhat more complicated than the 5 addition/subtraction operations we needed to find the solution. (Had the required x-value been different, we might have chosen a different approach.)
10. (5 points) if f 0 (x) > 0 over an interval, then the y-values of f(x) "
If f₀(x)> 0 over an interval, then the y-values of function f(x) are increasing or positive over that interval.
This means that as x increases, the corresponding y-values of function f(x) also increase. Conversely, if f₀(x)< 0 over an interval, then the y-values of f(x) are decreasing over that interval, meaning that as x increases, the corresponding y-values of f(x) decrease.
This is because f₀(x) is the same function as f(x) except that it has been shifted vertically by some constant amount. Specifically, f(x) = f₀(x) + C, where C is a constant. Since f₀(x) > 0 over the interval, we know that f(x) = f₀(x) + C is positive for all x in the same interval.
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Kylie needs to build a fence around her land to keep her dog in. Her land is a rectangle which is 15m long and 14m wide. How many metres of fencing material will kylie need to go all around her land?
Answer:
58m
Step-by-step explanation:
The perimeter of a rectangle equation is as follows:
p = 2(width + height)
The width is 14m and the height is 15m. Plug these into the equation and solve:
p = 2(14 + 15)
p = 2(29)
p = 58
Therefore, Kylie will need 58m of fencing to go all around her land.
Hope this helps!!
- Kay :)
Kylie needs 58 m of fencing to fencing material to go around her lend.
Given that,
Kylie needs to build a fence around her land to keep her dog in.
Her land is a rectangle that is 15m long and 14m wide.
The rectangle is a four-sided polygon whose opposites sides are equal and has an angle of 90° between its sides.
What is the perimeter?Perimeter is the measure of the figure on its circumference.
Since in question how many meters of fencing material will kylie need to go all around her land is to be determined.
From the given, we have the length and width of rectangle land which are 15 m and 14 m respectively.
Since Kylie needs to do fencing all around her land so she must know the perimeter of her land in order to evaluate how much fencing material will be needed.
Perimeter of her land = 2 * length + 2 * width
= 2 * 15 + 2 * 14
= 58 m
Thus, Kylie needs 58 m of fencing to fencing material to go around her lend.
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What is the answer??
Answer:
y₂ = 3
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to - \(\frac{3}{4}\)
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (7, - 6) and (x₂, y₂ ) = (- 5, y₂ )
m = \(\frac{y_{2}+6 }{-5-7}\) , that is
\(\frac{y_{2}+6 }{-12}\) = - \(\frac{3}{4}\) ( cross- multiply )
4(y₂ + 6) = 36 ( divide both sides by 4 )
y₂ + 6 = 9 ( subtract 6 from both sides )
y₂ = 3
What’s the value of x ? HELP PLEASEEEEEEE
Answer:
ok so, u need to simplify the fraction. but the x value is the number that is on the left side when ur simplifying the fraction. also its the one on top not bottom. hope this helps u!
Step-by-step explanation:
(b) Find the greatest number that divides 300, 560 and 500 without leaving a remainder.
Greatest number that divides 300, 560 and 500 is 20 .
Given numbers : 300, 560 and 500
First let’s find prime factors of 300,560 and 500
300 = 2^2 *3^1 *5^2
560= 2^4 * 7^1 *5^1
500 = 2^2 * 5^3
So,
Here highest common power of 2 is 2
Here highest common power of 3 is 0
Here highest common power of 5 is 1
Here highest common power of 7 is 0
Thus HCF (300, 560 and 500) = 2^2 * 5^1 * 3 ^0 * 7 ^0
=4*5*1*1
= 20
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What is the greatest common factor of 30 and 27?
Answer:
3
Step-by-step explanation:
well my alexa said so and shes always right so dont worry lol
Answer: 3
Step-by-step explanation:
30: 1, 2, 3, 5, 6, 10, 15, 30
27: 1, 3, 9, 27
The GCF is 3
hope this helps!
Find all values x = a where the function is discontinuous. f(x) = x²-36 / x+6
a. a = 5 b. a = -36 c. a = 6
d. a = -6
The left-hand limit is:-∞ < lim_(x→-6a-) f(x) < ∞And the right-hand limit is:-∞ < lim_(x→-6a+) f(x) < ∞
Since the left-hand and right-hand limits both exist and are finite, but are not equal to each other, the function is also not continuous at x = -6a. This means the Function is discontinuous at x = -6a.Therefore, the correct answer is option d. a = -6.
To find all values x = a where the function is discontinuous, we must consider the following:
First of all, if a function is not defined at some x value (for example, a value that would make the denominator zero), then the function is not continuous at that value. Second, if the left-hand limit at a point and the right-hand limit at that point do not equal to each other, the function is not continuous at that point.
Now let's consider the given function:f(x) = (x² - 36) / (x + 6a)Let's begin by checking if the function is defined for all values of x. We can do this by checking if the denominator (x + 6a) is equal to zero for any value of x. Setting the denominator equal to zero and solving for x, we get:-6a = x
Hence, the function is undefined at x = -6a. This means the function is not continuous at x = -6a.Now let's check the limit as x approaches -6a from the left and right to see if the function is discontinuous.
To do this, we can use the fact that the limit of the function as x approaches some value is equal to the limit of the numerator divided by the limit of the denominator as x approaches that value. As such:lim_(x→-6a) x²-36 = (-6a)² - 36 = 36a² - 36lim_(x→-6a) x+6a = 0
Therefore, the left-hand limit is:-∞ < lim_(x→-6a-) f(x) < ∞And the right-hand limit is:-∞ < lim_(x→-6a+) f(x) < ∞
Since the left-hand and right-hand limits both exist and are finite, but are not equal to each other, the function is also not continuous at x = -6a. This means the function is discontinuous at x = -6a.
Therefore, the correct answer is option d. a = -6.
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9.13. Ambient air at 60°F and 14.7 psia accelerates isentropically into a 12-in.-diameter duct. After 100 ft the duct transitions into an 8x8 in. square section where the Mach number is 0.50. Neglect all frictional effects except in the constant-area duct, where f=0.04. (a) Determine the Mach number at the duct entrance. (b) What are the temperature and pressure in the square section? (c) How much 8 x 8 in. square duct could be added before the flow chokes? (Assume that f= 0.04 in this duct also.)
a) The Mach number at the duct entrance is 0.878.
b) The temperature and pressure in the square section is 727 R.
c) The maximum length of the duct that can be added before the flow chokes is 40.9 feet.
a) To determine the Mach number at the duct entrance, first use the isentropic flow equation to calculate the velocity.
\($\frac{2}{\gamma-1}\left[\left(\frac{P_{0}}{P_{1}}\right)^{\frac{\gamma-1}{\gamma}}-1\right]=M^{2}$\)
Where P0 is the ambient pressure, P1 is the static pressure, and M is the Mach number. Assuming a perfect gas with γ = 1.4,
\($\frac{2}{1.4 - 1}\left[\left(\frac{14.7}{P_{1}}\right) ^{\frac{1.4-1}{1.4}} - 1\right] = M^{2}$\)
Because all we are given is the ambient pressure and a Mach number of 0.50 in the second section, the Mach number at the entrance can be found by solving this equation for M:
\($M = \sqrt{\frac{2}{1.4 - 1}\left[\left(\frac{14.7}{P_{1}}\right) ^{\frac{1.4-1}{1.4}} - 1\right] } = 0.878$\)
b) To determine the temperature and pressure in the 8 x 8 in. square section, use the isentropic flow equation for area ratio
\($\frac{A_{1}}{A_{2}} = \Big(\frac{2}{\gamma+1}\Big)^{\frac{\gamma + 1}{2(\gamma -1)}}M^{\frac{2}{\gamma - 1}}$\)
The area ratio for this problem is:
\($\frac{12^{2}} {8 \times 8} = 4$\)
With a Mach number of 0.50 and γ = 1.4, the equation becomes
\($4 = \Big(\frac{2}{\gamma+1}\Big) ^{\frac{\gamma+1}{2(\gamma-1)}} \big(0.5 \big) ^{\frac{2}{\gamma-1}}$\)
Solving this equation yields
\($P_{2} = 3.27 \quad psia$\)
\($T_{2} = 727 \quad \text{R}$\)
c) To determine the amount of 8 × 8 in. duct that can be added before the flow chokes, use the same equation used in part b. with M=1. The area ratio for this problem is again 4, so the equation becomes
\($4 = \Big(\frac{2}{\gamma+1}\Big) ^{\frac{\gamma+1}{2(\gamma-1)}} \big(1 \big) ^{\frac{2}{\gamma-1}}$\)
Solving for P₂ yields
\($P_{2} = 1.90 \quad psia$\)
Assuming f = 0.04 in the 8 × 8 in. duct, the maximum length of this duct that can be added before the flow chokes is
\($L_{max} = \frac{2 \times 0.04 \times 14.7}{1.90 - 0.04 \times 14.7} \times \frac{144}{\pi D_{2}^{2}} = 40.9 \quad ft$\)
Therefore,
a) The Mach number at the duct entrance is 0.878.
b) The temperature and pressure in the square section is 727 R.
c) The maximum length of the duct that can be added before the flow chokes is 40.9 feet.
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11 points! Will give brainliest!!!!
21 is the right answer.
Mark me the brainliest
Find all the missing elements:
15
38°
42°
A
C С
b
Answer:
m∠B = 100°
a = 4.6
b = 7.36
Step-by-step explanation:
By applying sine rule in the given triangle,
\(\frac{\text{sin(A)}}{a}= \frac{\text{sin(B)}}{b}= \frac{\text{sin(C)}}{c}\)
Now substitute the values in the expression,
\(\frac{\text{sin(38)}}{a}= \frac{\text{sin(B)}}{b}= \frac{\text{sin(42)}}{5}\)
\(\frac{\text{sin(38)}}{a}= \frac{\text{sin(42)}}{5}\)
\(a=\frac{5\text{sin(38)}}{\text{sin(42)}}\)
a = 4.6
By applying triangle sum theorem in ΔABC,
m∠A + m∠B + m∠C = 180°
38° + m∠B + 42° = 180°
m∠B = 180° - 80°
m∠B = 100°
\(\frac{\text{sin(100)}}{b}= \frac{\text{sin(42)}}{5}\)
\(b=\frac{5\text{sin(100)}}{\text{sin(42)}}\)
b = 7.36
The attendance over a weekly period of time at a movie theater is normally distributed with a mean of 10,000 and a standard deviation of 1000 persons. Find the percent of attendance figures that differs from the mean by 1500 persons or more.
The percent of attendance figures that differs from the mean by 1500 persons or more is 6.68%.
From the question above, Mean μ = 10,000
Standard Deviation σ = 1,000
The formula for z-score is :
z = (x-μ) / σ
Where, x = observation
z = z-score
Mean μ = 10,000
Standard Deviation σ = 1,000
From the above formula, let's calculate z-score for x = 11,500
z = (x-μ) / σ
z = (11,500 - 10,000) / 1000
z = 1.5
Now, find the probability of attendance figures that differs from the mean by 1500 persons or more.
P(z ≥ 1.5) = 0.0668
To find the percentage, we need to multiply the above value by 100.
P(z ≥ 1.5) × 100 = 0.0668 × 100 = 6.68%
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16 is 35% of what amount?
a) 21.87
b) 45.71
c) 29.95
d) 24.58
The population of insects in an experiment has
been increasing by 9% each week. If there were 16
insects at the beginning of the experiment, predict
how many insects there will be after 8 weeks.
Answer:
\(16 (1 +0.09)^{8}\\\)
Future Amount = 38 (rounded)
Step-by-step explanation:
hope this helps.
=
?
(5
4
⋅b
−10
)
−6
\((5^{4} *\frac{1}{b^{10} }) ^{-6}\)
\((\frac{5^{4} }{b^{10} } )^{-6}\)
\(\frac{b^{60} }{5^{24} }\)
Given the two points(-2,1) and (-3,-3) on the graph, calculate the scope
Answer:
\(m=4\)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: \(m=\frac{y_2-y_1}{x_2-x_1}\)Step-by-step explanation:
Step 1: Define
Point (-2, 1)
Point (-3, -3)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute [SF]: \(m=\frac{-3-1}{-3+2}\)Subtract/Add: \(m=\frac{-4}{-1}\)Divide: \(m=4\)Please solve this as soon as possible
Answer:
Equation: (14.50-10)/0.15
Stanley has do 30 extra messages.
\( \frac{(14.5 - 10)}{0.15} \)
need help ASAP thank you :)
What is the greatest common factor of 15 and 51
Answer:
3
Step-by-step explanation:
You can find the factors 15 and 51, and see what numbers they have in common.
51 = 1, 3, 17, 51
15 = 1, 3, 5, 15
If you look at it, the two numbers they have in common are 1 and 3. But the greatest out of the two is 3.
Answer: The greatest common factor (GCF) of 15 and 51 is 3
Hope this helps! :)
what is the equation in slope intercept form of the line that passes through the point (2,-5) and is parallel to the line represented by 8x+2y=14
Answer: y = -4x + 3
Step-by-step explanation:
First, we will write 8x+2y=14 in slope-intercept form.
8x+2y=14
2y = -8x + 14
y = -4x + 7
Next, we will take this new slope-intercept form equation, y = -4x + 7, and use the slope from it to substitute the coordinate point given to find the y-intercept of the equation we are trying to find.
y = -4x + b
(-5) = -4(2) + b
-5 = -8 + b
b = 3
Lastly, we will write our equation with a slope of -4 and a y-intercept of 3.
y = -4x + 3
evaluate each integral by interpreting it in terms of areas. (a) 8 0 f(x) dx (b) 20 0 f(x) dx (c) 28 20 f(x) dx (d) 28 12 f(x) dx (e) 28 12 |f(x)| dx (f) 0 8 f(x) dx
To evaluate each integral in terms of areas, we need to understand that the integral represents the area under the curve of a function, f(x), between two points on the x-axis.
Let's discuss each integral:
(a) ∫₀⁸ f(x) dx: This represents the area under the curve of f(x) from x = 0 to x = 8. The integral calculates the accumulated area along this interval.
(b) ∫₀²⁰ f(x) dx: Similarly, this represents the area under the curve of f(x) from x = 0 to x = 20. It's a broader interval than (a), so it covers more area under the curve.
(c) ∫²⁰²⁸ f(x) dx: This integral represents the area under the curve of f(x) between x = 20 and x = 28. It's important to note that the interval is now shifted to the right compared to (a) and (b).
(d) ∫¹²²⁸ f(x) dx: This integral calculates the area under the curve of f(x) from x = 12 to x = 28. The interval here is larger than in (c), covering more area under the curve.
(e) ∫¹²²⁸ |f(x)| dx: This integral evaluates the area under the absolute value of f(x) from x = 12 to x = 28. The absolute value ensures that negative function values contribute positively to the area calculation, preventing any cancelation of areas.
(f) ∫₀⁸ f(x) dx: This integral is the same as (a), representing the area under the curve of f(x) from x = 0 to x = 8.
Each integral evaluates the area under the curve of f(x) for different intervals on the x-axis, providing insights into the total accumulated area in those intervals.
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What is the greatest common factor of 48 and 84?
O 6
O 9
O 12
O 14
Answer:
12
Step-by-step explanation:
14 doesn't go into both 48 and 84. 12 is the next highest and it goes into both of them.
by how many times does the surface area of a sphere differ if radius is double
Answer:
four times the original surface area