Find an area of a circle if the diameter of the circle is 40 cm

To factor quadratics with leading coefficients other than 1, you can follow these steps:

Check your factoring by expanding the factored form to see if it simplifies back to the original quadratic equation.

Remember that factoring quadratics with leading coefficients other than 1 may involve more complex algebraic techniques, and in some cases, the quadratic equation may not factor easily. In such cases, you can resort to using the quadratic formula to find the roots of the equation.

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The hours it would take to type 3.2 x 10^5 words is 1.33 x 10^2  hours.

Standard form is used in expressing large numbers in smaller numbers. It is used to transform large numbers into smaller number.

In order to write a number in standard form, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.

For example: 1 x 10² is equivalent to 100

The first step is to determine how many words he can type in 1 hour : 40 x 60 = 2400 words = 2.4 x 10³

The second step is to divide 3.2 x 10^5 words by 2.4 x 10³

3.2 x 10^5 ÷ 2.4 x 10³ = 1.33 x 10^(5 - 3)

1.33 x 10^2  hours

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Answer:

7.35 pints

Step-by-step explanation:

If we use 1/4 of the 9.8 pints for blue, then the remaining white paint takes up 3/4 of the 9.8 pints of paint. To find how many pints of paint is equal to 3/4 of it, you must multiply that fraction by the amount (9.8).

\(\frac{3}{4}\) * 9.8 (or 0.75 * 9.8) = 7.35

Therefore, 7.35 pints of the total paint used is white.

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Answer:

x = 15

m∠B = 108°

Step-by-step explanation:

From the picture attached,

There are two parallel lines and another line (transversal line) is intersecting the given lines making angle A and angle B.

Since, ∠A and ∠B are the exterior alternate angles,

measure of both the angles will be same.

m∠A = m∠B

(6x + 18)° = (x + 93)°

6x - x = 93 - 18

5x = 75

x = 15

m∠A = (6x + 18) = 90 + 18

                         = 108°

m∠A = m∠B = 108°

The p-value for testing H0 (null hypothesis) versus Ha (alternative hypothesis) is 0.0038. We need to determine whether H0 would be rejected at different significance levels: α = 0.10, α = 0.05, α = 0.01, and α = 0.001.

To make the decision, we compare the p-value with the chosen significance level. If the p-value is less than or equal to the significance level, we reject H0. Otherwise, we fail to reject H0.

At α = 0.10: Since the p-value (0.0038) is less than 0.10, we reject H0.

At α = 0.05: Since the p-value (0.0038) is less than 0.05, we reject H0.

At α = 0.01: Since the p-value (0.0038) is greater than 0.01, we fail to reject H0.

At α = 0.001: Since the p-value (0.0038) is greater than 0.001, we fail to reject H0.

In summary:

H0 would be rejected at α = 0.10 and α = 0.05.

H0 would not be rejected at α = 0.01 and α = 0.001.

Please note that the decision to reject or fail to reject the null hypothesis depends on the chosen significance level, and different levels of significance can lead to different conclusions.

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Answer:

48 years old

Step-by-step explanation:

a + w = 62

a+3 = 3(w+3) =>a+3=3w+9

=> a-3w = 6

a+ w = 62

a- 3w= 6

________-

4w = 56

w = 14

so, the Aini's age now is 62-14 = 48 years old

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The range of the interval where p-value 0.2514 lies is given by option a. 0.2001 to 5000.

To find the p-value for the test,

calculate the z-score and then use the z-table or a calculator to find the corresponding p-value.

The z-score is calculated using the formula,

z = (sample mean - population mean) / (population standard deviation / √(sample size))

here,

Sample mean (X) = 798 hours

Population mean (μ) = 800 hours

Population standard deviation (σ) = 20 hours

Sample size (n) = 36

Substituting these values into the formula, we have,

z = (798 - 800) / (20 /√(36))

= -2 / (20 / 6)

= -2 / 3

= -0.67

Now, the p-value associated with the z-score of -0.67  use a calculator.

Using a z-calculator,

The area to the left of -0.67 is approximately 0.2514.

However, since we are testing the hypothesis that the mean lifetime of light bulbs is less than 800 hours (one-tailed test),

The area to the left of -0.67.

The p-value is 0.2514.

Therefore, the interval contains the p-value is given by option a. 0.2001 to 5000

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Answer:

I and H

Step-by-step explanation:

The Equation of a Straigth Line has the form:

where m is the slope and b the intersection with the vertical axis (y-axis).

As we can see based on the graph, b = 0, and m can be calculated as follows:

To use the latter, we have to choose two points from the graph. For example, assuming that each square from the graph represents one unit:

• (0,0)

• (-2,1)

Replacing these coordinates:

Answer:

CM is the perpendicular bisector of AB at M, it means that CM is perpendicular to AB, and AM=BM. Therefore, we have two right triangles, triangle AMC and triangle BMC, with a shared side CM, and AM=BM.

By the Pythagorean theorem, we know that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. Applying this to triangles AMC and BMC, we have:

AC² = AM² + CM²

BC² = BM² + CM²

Since AM=BM, we can substitute AM for BM in the second equation, giving:

BC² = AM² + CM²

Since the left-hand sides of these two equations are equal (by the given that CM is the perpendicular bisector of AB), we can set their right-hand sides equal to each other and simplify:

AC² = BC²

Taking the square root of both sides gives us:

AC = BC

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Answer:

Joan has 78 Stickers left

Step-by-step explanation:

Joan gave 74 stickers to Sally: 263 - 74 = 189

Remaining Stickers: 189

Joan gave 51 stickers to her sister: 189 - 51 = 138

Remaining Stickers: 138

Joan gave 60 stickers to Jason: 138 - 60 = 78

Remaining Stickers: 78

Answer:

2 days

Step-by-step explanation:

I figured out what 1/4 of 8 was by taking 2 and multiplying it by 4. You can also get this same answer by dividing 8 by 4.

Consequently, the graph is correct; and the x values for the solutions are x = -2 and x = 0.

The solution to f(x) = g(x) is the value(s) of x that satisfy the equation. In other words, it is the value(s) of x that make f(x) equal to g(x).

The only problem here is determining which graph is correct:

f(x) is the same on both graphs;

g(x) = 2 |x + 2| is the absolute value graph of lxl stretched vertically two units to the left;

the "vertex" of lxl is (0, 0);

consequently, the first graph is correct; and the x values for the solutions are x = -2 and x = 0.

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Answer:

0.5

Step-by-step explanation:

0.5 x 0.5 = 0.25

Answer:

x=0.5

Step-by-step explanation:

x=±√0.25

x=±0.5

x=0.5,−0.5

Answer:

59/9

Step-by-step explanation:

d=100. 12/4=3 min/lap

12mins 4 laps. 100/180= 59/9

R=50

2(pie)(50)=100(pie)

rate at which Peter moves in m/s :

= 100m / 12 s

= 8.33 m/s

rate at which John moves in m/s :

since it should be given in meters per second let's convert km to m and minutes to second

2.5 km = 2500m ( as 1km = 1000m)

4 minutes = 240s ( as 1 min = 60s )

so the rate in m/s :

= 2500m / 240 s

= 10.416 m/s

Answer:

If there is no context given, you cannot find out whether the graph is discrete or continuous.

Answer:

Point A' should be 2 units left and 8 units above of Point C.

Point B' should be 10 units right and above Point C.

Point C stays the same.

Answer:

where are the questions????????????

Answer:

if you said 1/4 of an hour it would be the 40 cars, if half of an hour the 250 cars.

Step-by-step explanation:

Answer:

x - 2 and x - 1 can be possible length and width of the rectangle.

Step-by-step explanation:

Area = x² - 3x + 2

◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇

To find possible length and width we can factorize the above expression.

◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇

x² - 3x + 2 ( 2 = -1 × -2 )

x² - x - 2x + 2 ( 3 = -1 + -2 )

x(x - 1) + -2(x - 1)

(x - 2) (x - 1)

◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇

x - 2 and x - 1 can be possible length and width of the rectangle.

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All of 4x+8 is under a cube root sign.

=====================================================

Work Shown:

To find the inverse, we swap x and y, then solve for y.

\(y = \frac{1}{4}x^3 - 2\\\\x = \frac{1}{4}y^3 - 2\\\\x+2 = \frac{1}{4}y^3\\\\4(x+2) = y^3\\\\4x+8 = y^3\\\\y^3 = 4x+8\\\\y = \sqrt[3]{4x+8}\\\\\)

------------

Side note:

If \(f(x) = \frac{1}{4}x^3 - 2\) and \(g(x) = \sqrt[3]{4x+8}\), then \(f(g(x)) = x\) and \(g(f(x)) = x\)for all x values in the domain. Effectively, you use function composition to confirm that we have the correct inverse equation.

Answer:

Step-by-step explanation:

if it's talking about between the numbers 75 to 97, then it's 22.

Answer:

\(P(sister) = \frac{8}{30} \\ \)

Step-by-step explanation:

\(P(sister) = \frac{8}{30} \\ P(brother) = \frac{13}{30} \\ P(SnB) = \frac{3}{30} \\ \)

The final equation for the tangent plane to the graph of f at the point (a, b) is z = 2e^a(x - a) - y + 2e^a - 2b. This equation represents the plane that is tangent to the graph of f at the specified point (a, b).

To find the equation for the tangent plane to the graph of the function f(x, y) = 2e^x - y at a given point (x0, y0), we need to calculate the partial derivatives of f with respect to x and y at that point.

The partial derivative of f with respect to x, denoted as ∂f/∂x or fₓ, represents the rate of change of f with respect to x while keeping y constant. Similarly, the partial derivative of f with respect to y, denoted as ∂f/∂y or fᵧ, represents the rate of change of f with respect to y while keeping x constant.

Let's calculate these partial derivatives:

fₓ = d/dx(2e^x - y) = 2e^x

fᵧ = d/dy(2e^x - y) = -1

Now, we have the partial derivatives evaluated at the point (x0, y0). Let's assume our point of interest is (a, b), where a = x0 and b = y0.

At the point (a, b), the equation for the tangent plane is given by:

z - f(a, b) = fₓ(a, b)(x - a) + fᵧ(a, b)(y - b)

Substituting fₓ(a, b) = 2e^a and fᵧ(a, b) = -1, we have:

z - f(a, b) = 2e^a(x - a) - (y - b)

Now, let's substitute f(a, b) = 2e^a - b:

z - (2e^a - b) = 2e^a(x - a) - (y - b)

Rearranging and simplifying:

z = 2e^a(x - a) - (y - b) + 2e^a - b

The final equation for the tangent plane to the graph of f at the point (a, b) is z = 2e^a(x - a) - y + 2e^a - 2b.

This equation represents the plane that is tangent to the graph of f at the specified point (a, b).

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Answer:

2803

 2 8 0 3

3 5 6 7 | 1 0 .      

7 . 1 3 4  

2 . 8 6 6 0  

2 . 8 5 3 6  

1 2 4 0 0

1 0 7 0 1

1 6 9 9

Answer:

0.00280347631

Step-by-step or something like that:

Why would you ask though? Lol

Answer:

= a(7b + 1)

Step-by-step explanation:

7ab + a

a(7b + 1).