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3 years ago

Rewrite in simplest terms: 4 (d+9) -8 (-3d-3)

Mathematics

1 answer:

asambeis [7]3 years ago

8 0

Answer:

28d + 60

Step-by-step explanation:

4d + 36 + 24d + 24

28d + 60

First I used distributive property to expand. Then I rewrote my answer into simplest form possible. As we know that two negatives equal postive which is what I did to get the correct answer.

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The business college computing center wants to determine the proportion of business students who have personal computers (PC's)

Anastasy [175]

Answer:

Option A) reject null hypothesis if z is greater than 1.645

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

p = 30% = 0.3

Alpha, α = 0.05

Number of women belonging to union , x = 75

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.3\\H_A: p > 0.3$

This is a one-tailed(right) test.

Rejection Region:

$z_{critical} \text{ at 0.05 level of significance } = 1.645$

So, the rejection region will be

$z > 1.64$

That is we will reject the null hypothesis if the calculated z-statistic is greater than 1.645

Option A) reject null hypothesis if z is greater than 1.645

6 0

3 years ago

Find the distance between the points (7,23) and (3,-3), rounded to the hundredths place

Molodets [167]

Answer:

26.31

Step-by-step explanation:

Use distance formula

d = $\sqrt{(x_{2}-x_{1)^{2} + (y_{2}-y_ ^{1)^2} } }$

substitute in points and solve

d = $\sqrt{(7-3)^2 + (23-(-3))^{2} }$

d = $\sqrt{4^{2}+26^{2} }$

d = $\sqrt{16 + 676}$

d = $\sqrt{692}$

d = 26.30589288

d = 26.31 rounded

5 0

3 years ago

CHECK MY ANSWER??

Tatiana [17]

You are partially correct :) 2^SQR(10) x SQR(10) = 20
The answer is just 20

4 0

3 years ago

(3/7 * (- 5/8)) + (1/3 * 5/6) + |- 1/2 - 1/5|

ANEK [815]

Answer:

Exact Form:

1789/2520

Decimal Form:

0.70992063

8 0

2 years ago

The owner of a video game store creates the expression −2x^2 + 24x + 174 to represent the store's weekly profit in dollars, wher

coldgirl [10]

The answer is the second one

6 0

3 years ago