Ask question

Ask question

All categories

2 years ago

12

Please answer quick as possible

2 answers:

Murrr4er [49]2 years ago

7 0

Answer:

The correct option is B

i just answer that on our test and i got A+

<h3 />

olga nikolaevna [1]2 years ago

3 0

Answer:

p + 2

Step-by-step explanation:

$A=lb \\ \\ \implies \: b = \frac{A}{l} \\ \\ \implies \: b = \frac{p(4 {p}^{2} - 16) }{4p(p - 2)} \\ \\ \implies \: b = \frac{4p({p}^{2} - 4) }{4p(p - 2)} \\ \\ \implies \: b = \frac{4p({p}^{2} - {(2)}^{2} ) }{4p(p - 2)} \\ \\ \implies \: b = \frac{\cancel{4p({p} - {(2)})}({p} + {(2)}) }{\cancel{4p(p - 2)}}\\ \\ \implies \huge \orange{ \: b =(p + 2)}$

You might be interested in

PLEASE HELP!!!<br> 9/10 divided by (-3/5) <br> Write the answer as a mixed number

agasfer [191]

$\frac{\frac{9}{10}}{\frac{-3}{5}}=\frac{45}{-30}=-\frac{9}{6}=\boxed{\frac{3}{2}}$

Hope this helps.

r3t40

6 0

3 years ago

Please help me :((((((

Ilya [14]

Step-by-step explanation:

she needs to swap 5.2 for 5.02

since 5.02 is smaller than 5.2

3 0

2 years ago

Read 2 more answers

Number 4 please asap!!!!!!!

Annette [7]

I would say it's H because 4 and 3 add to be 7

8 0

3 years ago

The expressions given represent the measures of the acute angles of a right triangle Find the measure of each acute angle.

olasank [31]

Answer:

30, 60

Step-by-step explanation:

The sum of a triangles angles should be 180.

Subtract 90 because it's a right triangle.

180 - 90 = 90

Now we know the sum of the other angles should be 90.

x + 2x = 90

Solve for x.

3x = 90

x = 30

Now you substitute 30 for x.

(30), 2(30)

30, 60

4 0

2 years ago

A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think the president of their co

scoray [572]

Answer:

a. n=4148

b. n=3909

c. The sample size is smaller if a known proportion from prior study is used. The difference in sample sizes is 239

Step-by-step explanation:

a. For sample where no preliminary estimate is given, the minimum sample size is calculated using the formula:

$n=p(1-p)(\frac{z}{ME})^2$

Where:

$ME=$ Margin of error
$p=$ is the assumed proportion

#Let p=0.5, substitute in the formula to solve for n:

$n=0.5(1-0.5)\times (2.576/0.02)^2\\\\=4147.36\approx 4148$

Hence, the minimum sample size is 4148

b. If given a preliminary estimate p=0.38, we use the same formula but substitute p with the given value:

$n=p(1-p)(z/ME)^2\\\\=0.38(1-0.38)(2.576/0.02)^2\\\\=3908.47\approx3909$

Hence, the minimum sample size is 3909

c. Comparing the sample sizes from a and b:

$n_{0.5}>n_{0.38}\\\\n_{0.5}-n_{0.38}=4148-3909=239$

Hence, the actual sample size is smaller for a known proportion from prior a prior study.

8 0

3 years ago