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2 years ago

What the valie of 8+(27÷9)2?

Mathematics

2 answers:

Dafna11 [192]2 years ago

7 0

First you do 27 divided by 9 which is 3
Then you multiply that by 2 which is 6
Then add 8
Final answer is 14

kirill115 [55]2 years ago

6 0

Answer:

Explanation:

Parenthesis, Exponents, Multiply, Divide, Add, Subtract

27 ÷ 9 = 3

3 · 2 = 6

8 + 6 = 14

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3 years ago

A city is holding a referendum on increasing property taxes to pay for a new high school. In a survey of 434 likely voters, 202

EleoNora [17]

Answer: 0.418 < p < 0.512

Step-by-step explanation: A 95% conifdence interval for a population proportion is given by:

$p + z\sqrt{\frac{p(1-p)}{n} }$

where:

p is the proportion

z is score in z-table

n is sample size

The proportion for people who said "yes" is

$p=\frac{202}{434}$ = 0.465

For a 95% confidence interval, z = 1.96.

Calculating

$0.465 + 1.96*\sqrt{\frac{0.465(0.535)}{434} }$

$0.465 + 1.96*\sqrt{0.00057}$

0.465 ± 1.96*0.024

0.465 ± 0.047

Interval is between:

0.465 - 0.047 = 0.418

0.465 + 0.047 = 0.512

<u>The interval with 95% of confidence is between 0.418 and 0.512.</u>

4 0

2 years ago

leonid [27]

Answer:

Step-by-step explanation:

B = 180 - 50 - 35 = 115 degrees

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2 years ago

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2 years ago

What number could replace x to make a true statement?

Burka [1]

Answer:

6 its 6 or D

Step-by-step explanation:

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2 years ago

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