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1 year ago

When using the order of operations to simplify (7 + 3) * 4 - 1 + (6 + 8), which operation should be performed first?

Mathematics

2 answers:

andriy [413]1 year ago

7 0

Answer:

(7+3)

After that you do (6+8)

Explanation:

Use PEMDAS

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

enot [183]1 year ago

5 0

Answer:

addition because it's in parentheses and following PEMDAS parentheses comes first so you do addition first.

I hope you find this helpful :D

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The administration at Pierce College conducted a survey to determine the proportion of students who ride a bike to campus. Of th

8_murik_8 [283]

Answer:

The correct option is (D).

Step-by-step explanation:

To construct the (1 - α)% confidence interval for population proportion the distribution of proportions must be approximated by the normal distribution.

A Normal approximation to binomial can be applied to approximate the distribution of proportion p, if the following conditions are satisfied:

$n\hat p \geq 10$

$n ( 1 - \hat p) \geq 10$

In this case p is defined as the proportions of students who ride a bike to campus.

A sample of n = 125 students are selected. Of these 125 students X = 6 ride a bike to campus.

Compute the sample proportion as follows:

$\hat p=\frac{X}{n}=\frac{6}{125}=0.048$

Check whether the conditions of Normal approximation are satisfied:

$n\hat p =125\times 0.048=610$

Since $n\hat p$ , the Normal approximation to Binomial cannot be applied.

Thus, the confidence interval cannot be used to estimate the proportion of all students who ride a bike to campus.

Thus, the correct option is (D).

6 0

2 years ago

Claire was out at a restaurant for dinner when the bill came. Her dinner came to $26. After adding in a tip, before tax, she pai

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Answer:

0.0312

Step-by-step explanation:

You subtract 29.12 by 26 which equals 3.12

Then you divide by 100 which equals 0.0312

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How to solve 4n²-3n-7=0

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