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3 years ago

How to convert percentage to decimals.

1 answer:

6 0

Step-by-step explanation: To write a percent as a decimal, first remember that a percent is a ratio that compares a number to 100.

If we want to convert any percent to a decimal, you want to think of the percent as a ratio of the percent to 100 or the percent divided by 100.

Dividing by 100 moves the decimal point 2 places to the left so we will move the decimal point 2 places to the right to get our answer.

Let's look at an example.

Write the following percent as a decimal. 9%

We know that we can change a percent to a decimal by simply moving the decimal point 2 places to the left.

So in this problem, to write 9% as a decimal, we simply move the decimal point 2 places to the left and fill in the missing position with a zero.

So 9% can be written as the decimal .09 or 0.09.

A common mistake in this problem is to write 9% as the decimal 0.9 but remember to move the decimal point 2 places to the left so our answer is 0.09.

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PLEASE HELP QUICKLY What is the value of y

zepelin [54]

Answer:

y = 8 degrees

Step-by-step explanation:

128 + 7y - 4 = 180

7y - 4 = 52

7y + 56

y = 8

7 0

3 years ago

Given the following 2 equations, state whether these equations are parallel, perpendicular, or neither.

stiks02 [169]

Answer:

Neither

Explanation:

The slope-intercept form of the equation of a line is generally given as;

$y=mx+b$

where m = the slope of the line

b = the y-intercept of the line

Two lines are said to be parallel if they have the same slope. Looking at the two given equations below, we see that the slope of the 1st one, 5/7, is different from the slope of the 2nd one, 7/5;

$\begin{gathered} y=\frac{5}{7}x+14 \\ y=\frac{7}{5}x-20 \end{gathered}$

Two lines are said to be perpendicular if their slopes are negative reciprocals of each other, let's go ahead and compare their slopes;

$\begin{gathered} m_1=\frac{5}{7} \\ m_2=\frac{7}{5} \\ \therefore m_2=\frac{1}{m_1_{}} \end{gathered}$

So the two lines are not perpendicular to each other. It, therefore, means that the correct answer will be Neither.

3 0

1 year ago

Simplify 3^8 ÷ 3^2 A. 3^4 B. 3^10 C. 3^6 D. 3^6

olga_2 [115]

Answer: 3^6 so D or C

Step-by-step explanation:

When dividing two squares, you minus the number

3 0

3 years ago

Read 2 more answers

397 of 514 randomly selected U.S. adults interviewed said they would not be bothered if the National Security Agency collected r

Afina-wow [57]

Answer:

z=14.73

p=0.000

for 99% confidence level the null hypothesis is rejected, thus majority of us adults would not bothered if the NSA collected personal records.

Step-by-step explanation:

$H_{0}$ : Half of US adults would not bothered if the NSA collect records of personal telephone calls

$H_{A}$ : Majority of the adults would not bothered if the NSA collect records of personal telephone calls

According to the sample, z-value can be found using the formula:

z= $\frac{X-M}{\sqrt{n*p*(1-p)} }$ where

X is the adults, who would not be bothered in the survey (397)
M is the mean of the distribution of null hypothesis (257)
n is the sample size (514)
p is the proportion of the sample, who said they would not bothered ( $\frac{397}{514}$ ≈ 0.77)

Putting these numbers in the formula,

z=14.73 and corresponding p value is p≈0.000

Since p<0.01, for 99% confidence level we reject the null hypothesis, thus majority of us adults would not bothered if the NSA collected personal records.

8 0

3 years ago

Please help me with this use the screen shot

dezoksy [38]

Okay so this is a wild guess but I would say 12. The whole angle is 90, but only 1/3 of that is in the smaller portion of the triangle. So, I assumed that 1/3 of the length of the whole triangle. Three times 6 is 18 and minus AD is 12. So BD=12? This is my best guess hope it helps

4 0

3 years ago