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3 years ago

7p-(3p+4)= -2(2p-1) + 10 Solve each equation.

1 answer:

8 0

Perform the indicated multiplication:

7p-(3p+4)= -2(2p-1) + 10

becomes

7p - 3p - 4 = -4p + 2 + 10

Group like terms:

7p - 3p + 4p = 2 + 10 + 4

8p = 16 => p = 2 (answer)

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What is the value of the expression 30-(-6)? -180 -5 Ο Ο Ο Ο 5 24

Tcecarenko [31]

Answer:30-(-6) is the same as 30+6. 36 is the value of the expression 30-(-6). If it were written:

30x(-6) = -180

30-6 = 24

But 30-(-6) = 36

Step-by-step explanation:

7 0

3 years ago

One serving of granola provides 4% of the protein you need daily. You must get the remaining 48 grams from other sources. How ma

e-lub [12.9K]

48 grams= 96% needed

x grams. = 4%

Set up a proportion

48/96 = x/4

96/24=4
48/24=2
x=2= grams in the granola

Add the value of 96% and the value of 4% to get the value of 100%

2+48=50

Final answer: 50 grams

7 0

3 years ago

4. A study of 30 fathers was completed in which the fathers were asked the highest level of education they had completed. 10 com

zaharov [31]

Answer:

The cumulative percentage of fathers who completed only elementary school is nearle 33%.

Step-by-step explanation:

Among 30 fathers:

10 completed only elementary school;
10 completed elementary school and high school;
7 completed elementary school, high school and college;
3 completed elementary school, high school, college and graduate school.

You can fill these numbers into the table:

$\begin{array}{cccc}&\text{Frequency}&\text{Cumulative frequency}&\text{Cumulative percentage}\\\text{Elementary school}&10&10&\approx 33\%\\\text{El. and high school}&10&20&\approx 67\%\\\text{El., high schools and college}&7&27&90\%\\\text{El., high, college and grad. sch.}&3&30&100\%\end{array}$

The cumulative percentage of fathers who completed only elementary school is nearle 33%.

7 0

3 years ago

The area of one face of a cube is 25 square centimeters. What is the volume, in cubic centimeters, of the cube?

Umnica [9.8K]

Answer: 125

Step-by-step explanation: you have to divide it

6 0

3 years ago

7. Deborah invested $3000 into a fund that is expected to earn 8.2% per year. If you use the Rule of 72, about how long will it

Stella [2.4K]

Answer:

About 9 years

Step-by-step explanation:

The rule of 72 tells us that the amount of time it takes to double your investment is 72 divided by the interest rate.

To get an approximation, we round of interest rate of 8.2% to 8% and then use the rule.

Time = $\frac{72}{8}=9$

For deborah's investment of $3000 to go to $6000, it would take around 9 years.

4 0

3 years ago