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3 years ago

What’s the answer????

Mathematics

2 answers:

swat323 years ago

6 0

Answer:

D. $y=-3\left(x+1\right)^{2}$

Step-by-step explanation:

I graphed the parent function and the changes made to make the new function.

serious [3.7K]3 years ago

4 0

Answer:

Step-by-step explanation:

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For every $10 glen earns is parents require him to save $2. What percent of his money does he get to spend

cricket20 [7]

80%

Ummm bro the explanation is simple he keeps 8/10 and he saves 2/10 sooo

8/10 x 10 = 80/100 spends 80%

2/10 x 10 = 20/100 saves 20%

Easy peasy...

9 0

4 years ago

Please help me thank you so much i will give brainliest answer if you get it right

Setler79 [48]

Answer:

the first four

Step-by-step explanation:

The last two do not equal 9 or .90

7 0

3 years ago

Darren wants to estimate the mean age in a population of trees. He'll sample nnn trees and build a 90\%90%90, percent confidence

Alchen [17]

Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

The margin of error is given by:

$M = z\frac{\sigma}{\sqrt{n}}$

In this problem, we have that the parameters are given as follows:

$M = 3, z = 1.645, \sigma = 16$ .

Hence, solving for n, we find the sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$3 = 1.645\frac{16}{\sqrt{n}}$

$3\sqrt{n} = 1.645 \times 16$

$\sqrt{n} = \frac{1.645 \times 16}{3}$

$(\sqrt{n})^2 = \left(\frac{1.645 \times 16}{3}\right)^2$

$n = 76.97$

Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0

2 years ago

Morgan’s mother is 3 times older than 2 years more than Morgan’s age. Write an expression for the age of Morgan’s mother, using

shutvik [7]

(2+m)3=Morgan's mother

3 0

4 years ago

Read 2 more answers

Solve a=bx+cx+d for x

Neko [114]

a = bx + cx + d Subtract d from both sides
a - d = bx + cx Factor x from bx and cx
a - d = x (b + c) Divide both sides by (b + c)
$\frac{a - d}{b + c}$ = x Switch the sides to make it easier to read
x = <span> $\frac{a - d}{b + c}$ </span>

6 0

4 years ago