Step-by-step explanation: The first thing you need to know about the order of operations is that multiplication and division come before addition and subtraction.

So in this problem, we are going to divide before we add.

Since 30 divided by 4 is 7.5, our next step will read 50 + 7.5 and 50 + 7.5 simplifies to 14.

6 0

3 years ago

Read 2 more answers

What is the height of the triangle?

MaRussiya [10]

Answer:

Step-by-step explanation:

Height of the triangle = 3 units

Height is always the perpendicular length.

4 0

3 years ago

A person owes a debt of $10

AleksandrR [38]

So the person is out of pocket of $10.00

6 0

3 years ago

A random sample of n D 225 and xN D 21 was drawn from a normal population with a known

Rainbow [258]

Using the z-distribution, the 95% confidence interval of the population mean is: (17.5, 24.5).

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.