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3 years ago

Solve for the x variable .

Mathematics

2 answers:

lbvjy [14]3 years ago

4 0

Answer:

ok the question is 2x is equals to 15 + x so we will collect the like terms so that we have 2 x minus x is equals to 15 and x is equals to 15

posledela3 years ago

3 0

Answer:

x=15

Step-by-step explanation:

plz mark as brainliest

hope it helped u

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Write a expression that is equivalent of 4+3(5+x)

stepladder [879]

Answer: 19 + 3x

Step-by-step explanation:

Given : 4 + 3(5+x)

expanding , we have

4 + 15 + 3x

= 19 + 3x

Therefore :

4 + 3 ( 5 + x ) = 19 + 3x

3 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

Rebecca had 9/10 of a yard of ribbon.Rebecca had 9/10 of a yard of ribbon. Then she gave 7/20 of a yard to a friend. How much do

scZoUnD [109]

I think it's 11/20.

6 0

3 years ago

Helppp me thank youu!<br>BRAINIEST GIVEN!!

dimaraw [331]

Answer:

Step-by-step explanation:

2 is the square root of 4 since 2×2=4

8 0

1 year ago

Read 2 more answers

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IceJOKER [234]

Answer:

$320

Step-by-step explanation:

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7 0

2 years ago