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3 years ago

CAN SOMEONE HELP ME PLEASE

Mathematics

1 answer:

klasskru [66]3 years ago

6 0

The correct answer is A.

We can tell this because when you write two triangles as congruent, the parts must match up in order. Since AC are the first and last terms in the triangle, we must have the first and last from the second. D and F are exactly that, so DF is congruent to AC.

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In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at l

svetoff [14.1K]

Answer: (0.25,0.33)

Step-by-step explanation:

A 99% confidence interval for population proportion is given by:-

$\hat{p}\pm 2.576\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$ , where $\hat{p}$ = sample proportion, $n$ = sample size.

Given: $n=1025, \hat{p}=0.29$

A 99% confidence interval estimate of the proportion of adults who use the Internet for shopping:

$0.29\pm 2.576\sqrt{\dfrac{0.29(1-0.29)}{1025}}\\\\=0.29\pm 2.576\sqrt{0.00020087804878}\\\\=0.29\pm2.576(0.01417)\\\\=0.29\pm0.03650192\\\\=(0.29-0.03650192,\ 0.29+0.03650192)\\\\=(0.25349808,\ 0.32650192)$

$\approx(0.25,\ 0.33)$

Thus, a 99% confidence interval estimate of the proportion of adults who use the Internet for shopping = (0.25,0.33)

5 0

3 years ago

Hey um this is confusing

aleksandr82 [10.1K]

Answer:

15.7

Step-by-step explanation:

Lets take a = 50.

Area of Sector =

$\frac{a}{360} \pi {r}^{2} \\ = \frac{50}{360} \pi {6}^{2} \\ = \frac{50}{360} (3.14)(36) \\ = 15.7units {}^{2}$

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2 years ago

8 The graph of y = a cos(x + b) for 0 2 1 60 120 180 240 300 360 -1 -2 (a) Find the valu

MAVERICK [17]

Answer:

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2 years ago

Write an equation that is parallel to y=-1/4x+2

AlexFokin [52]

Answer:

y = -1/4 -5

Step-by-step explanation:

Any equation will be parallel to your base equation as long as the y intercept is different. To write a parallel equation, you just have to change the y intercept.

For example, I changed it from 2 to negative 5.

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2 years ago

The temperature at sunset was -3°F

Softa [21]

-3-10+4 is the answer

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3 years ago

Read 2 more answers