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3 years ago

HELP PLEASE!! Which option is correct?!

Mathematics

2 answers:

Alex Ar [27]3 years ago

6 0

Answer:

Step-by-step explanation:

Sveta_85 [38]3 years ago

5 0

Answer:

im pretty sure it is D

Step-by-step explanation:

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If someone can explain this I will greatly appreciate it. I don’t really understand it.

erma4kov [3.2K]

Answer:

The second answer choice.

Step-by-step explanation:

6 0

3 years ago

A survey found that 89% of a random sample of 1024 American adults approved of cloning endangered animals. Find the margin of er

Kobotan [32]

Answer:

The margin of error for the survey is 0.016

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1024

Sample proportion:

$\hat{p} = 89\% = 0.89$

We have to find the margin of error associated with a 90% Confidence interval.

Formula for margin of error:

$z_{stat}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.10} = 1.64$

Putting the values, we get:

$M.E = 1.64\times (\sqrt{\dfrac{0.89(1-0.89)}{1024}})\\\\M.E=0.016$

Thus, the margin of error for the survey is 0.016

3 0

3 years ago

What is the answer to 5+5(x+4)≤20?

Nata [24]

$5+5\left( x+4 \right) \le 20\\ \\ 5\left\{ 1+\left( x+4 \right) \right\} \le 20\\ \\ \frac { 1 }{ 5 } \cdot 5\left\{ 1+\left( x+4 \right) \right\} \le 20\cdot \frac { 1 }{ 5 }$

$\ \\ 1+\left( x+4 \right) \le 4\\ \\ 1+x+4\le 4\\ \\ x+5\le 4\\ \\ x\le 4-5\\ \\ x\le -1$

7 0

3 years ago

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The game I want costs $60, but I only have $28 in my checking account. If I tried to buy this I would have _____.

Bogdan [553]

Answer:

$-32

Step-by-step explanation:

8 0

3 years ago

9.The perimeter of a rectangle whose length is 7.5cm and breadth 3.75cmRequired to answer. Single choice.

BabaBlast [244]

Answer:

22.5 cm

Step-by-step explanation:

P = 2( L + W)

P = 2( 7.5 + 3.75)

P = 2( 11.25)

P = 22.5 cm

3 0

3 years ago

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