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3 years ago

PLEASE HELP ASAP!!!!!!

Mathematics

1 answer:

maria [59]3 years ago

6 0

The parabola hits (-2,1) and (0,-1).
As you can see from the pictures, we can immediately cross out options B and D, since both parabola open upwards.
From the pictures, we can see that the answer is C, since only that parabola opens downwards and hits the points (-2,1) and (0,-1).

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9. If f(x) = 5x-4 and f(2a) =156 , then what is the value of a?

solmaris [256]

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$f(x) = 5x - 4$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

$f(2a) = 5(2a) - 4$

$f(2a) = 10a - 4$

$156 = 10a - 4$

$10a - 4 = 156$

Add sides 4

$10a - 4 + 4 = 156 + 4$

$10a = 160$

Divide sides by 10

$\frac{10a}{10} = \frac{160}{10} \\$

$a = 16$

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7 0

3 years ago

A research report says that t(63) = 1.99; p = .03. From that information, can you reject the null hypothesis with 95% confidence

Leona [35]

Answer:

Yes, I can reject the null hypothesis with 95% confidence.

Step-by-step explanation:

Critical value t(63) = 1.99

p-value = 0.03

Confidence level (C) = 95% = 0.95

Significance level = 1 - C = 1 - 0.95 = 0.05

Conclusion:

Reject the null hypothesis because the p-value 0.03 is less than the significance level 0.05.

4 0

3 years ago

Read 2 more answers

Point X is the incenter of ΔABC.

Gnoma [55]

The measures of GX = 13

The measures of $\angle ABX=22^0$

EX = 4z + 1 and XF = 2z + 7

Take EX and XF equal time each other and then solve for z and then you will get GX because EX = XF = GX are congruent.

EX = XF

<h3>What is congruent?</h3>

Two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.

4z + 1 = 2z + 7

2z = 6

z = 3

As, EX = XF = GX

EX = 4(3) + 1

EX = 13

Therefore, GX = 13 ------ ( EX = XF = GX )

To find the angle ABX, divide the angle ABC by 2 you will get

$\angle ABX=22^0$

For more information, refer to the link given below

brainly.com/question/16548605

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4 0

2 years ago

Help please will give brainliest thank you

lozanna [386]

Independent, means the first event won't affect the second event.

The independent events would be :

A, B, E, F

3 0

3 years ago

If a circle has a circumference of C, what is the area of the circle in terms of C?

Anettt [7]

First you have to write down the formula on how to get the circumference of the circle (C = 2pi * Radius) and the Area of the circle which is (A=Pi*Radius^2). In getting the radius you need to transform the formula of the circumference by making the radius to be the unknown variable so it would become(R=C/2pi), after that you need to replace the radius in the formula of the area by the transformed formula of the circumference and you will come up of the formula of (A=Pi(C/2pi)^2).

3 0

3 years ago