All categories

3 years ago

Assignment

Mathematics

2 answers:

timurjin [86]3 years ago

8 0

Answer: 3x + (-4) = x + 2

Step-by-step explanation:

Hope it helps

eimsori [14]3 years ago

8 0

Answer:

3x + (–4) = x + 2

Step-by-step explanation:

You might be interested in

Combine the like terms to create an equivalent -3х – 6+(-1)

pishuonlain [190]

You can combine the -6 and -1 to -7. So the expression can be simplified as -3x-7

4 0

3 years ago

1/2 (b - 10) + 2b = 25

Serggg [28]

Answer:

the answer is 12

Step-by-step explanation:

Simplify both sides of the equation.

12(b−10)+2b=25

(12)(b)+(12)(−10)+2b=25(Distribute)

12b+−5+2b=25

(12b+2b)+(−5)=25 (Combine Like Terms)

52b+−5=25

52b−5=25

add 5 to both sides.

52b−5+5=25+5

52b=30

multiply both sides by 2/5.

(25)*(52b)=(25)*(30)

b=12

4 0

3 years ago

Read 2 more answers

An automobile manufacturer would like to know what proportion of its customers are not satisfied by the service provided by the

zheka24 [161]

Answer:

The sample size needed if the margin of error of the confidence interval is to be about 0.04 is 18.

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Past studies suggest this proportion will be about 0.15

This means that $p = 0.15$

Find the sample size needed if the margin of error of the confidence interval is to be about 0.04

This is n when M = 0.04. So

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

$0.04 = 1.96\sqrt{\frac{0.15*0.85}{n}}$

$0.04\sqrt{n} = 1.96\sqrt{0.15*0.85}$

$\sqrt{n} = \frac{1.96\sqrt{0.15*0.85}}{0.04}$

$(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.15*0.85}}{0.04})^{2}$

$n = 17.5$

Rounding up

The sample size needed if the margin of error of the confidence interval is to be about 0.04 is 18.

8 0

3 years ago

Simplify <br> I don’t get this subject

kondaur [170]

The correct answer it’s 3

3 0

3 years ago

Read 2 more answers

Anychance anyone can answer this?

Vanyuwa [196]

Answer:

-3: C

-2: F

-1: A

6: D

Step-by-step explanation:

-3+2 = -1

-1 = (-1)^3

-3: C

-2+1 = 0

0 = 0^3

-2: F

-1+2 = 1

1 = 1^3

-1: A

6 + 2 = 8

8 = 2 x 2 x 2 = 2^3

6: D

6 0

3 years ago