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3 years ago

What's A in 5a+5=5(a+1)PLEASE EXPLAIN

Mathematics

2 answers:

Luden [163]3 years ago

8 0

Answer:

yes thats right

Step-by-step explanation:

stepan [7]3 years ago

3 0

Answer:

All real numbers are solutions.

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5a+5=5(a+1)

5a+5=(5)(a)+(5)(1)(Distribute)

5a+5=5a+5

Step 2: Subtract 5a from both sides.

5a+5−5a=5a+5−5a

5=5

Step 3: Subtract 5 from both sides.

5−5=5−5

0=0

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3 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ

Hunter-Best [27]

Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

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

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68% confidence level

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The lower limit of this interval is:

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The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24$

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

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3 years ago

What's A in 5a+5=5(a+1)PLEASE EXPLAIN​

What's A in 5a+5=5(a+1)PLEASE EXPLAIN