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3 years ago

b+4=2b-5, could someone help me with this question please, step by step because I have a quiz in math on friday, thank you!

1 answer:

8 0

<span>"Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2b' to each side of the equation. 4 + b + -2b = -5 + 2b + -2b Combine like terms: b + -2b = -1b 4 + -1b = -5 + 2b + -2b Combine like terms: 2b + -2b = 0 4 + -1b = -5 + 0 4 + -1b = -5 Add '-4' to each side of the equation. 4 + -4 + -1b = -5 + -4 Combine like terms: 4 + -4 = 0 0 + -1b = -5 + -4 -1b = -5 + -4 Combine like terms: -5 + -4 = -9 -1b = -9 Divide each side by '-1'. b = 9 Simplifying b = 9"- geteasysolution.com</span>

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If the cost of the framing material is $ 13 13 per linear foot and the cost of the pane glass is $ 24 24 per square foot, what i

miskamm [114]

I thank you should time 1313*2424==318.27

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3 years ago

Which of the choice below follows exponential pattern

blsea [12.9K]

Answer:

Step-by-step explanation:

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3 years ago

Keisha wants to estimate the percentage of managers at her company that hold an MBA. She surveys 320 managers and finds that 70

kondor19780726 [428]

Answer:

The margin of error is of 0.038 = 3.8%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 320, \pi = \frac{70}{320} = 0.21875$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.645\sqrt{\frac{0.21875(1-0.21875)}{320}}$

$M = 0.038$

The margin of error is of 0.038 = 3.8%.

6 0

4 years ago

SUPER PLEASE HELP NO ONE HAS HELPED ME WITH EITHER OF MY QUESTITIONS. IT WOULD BE GREATLY APPRECIATED IF SOMEONE DID.

Effectus [21]

Answer:

952.61

Step-by-step explanation:

877.98 X 0.085= 74.6283

877.98+74.6283=952.6083

952.6083 rouned= 952.61

this should be correct

4 0

3 years ago

on Monday the number of customers in the store rounded to the nearest hundred was 400 what is the greatest number of customers t

Zinaida [17]

Well, if any number is higher than '5' it turns one number more. So, here's a good rhyme to help you: "Five or more, up the score, Four or less, let it rest." The maximum number it could be would have to be '444' because it is not bigger than 445, which would turn to 500.

8 0

4 years ago

Read 2 more answers