MATHEMATICS MIDDLE SCHOOL

A function is given.
f(x)=2x+3

What is the value of f(−2)?

f(−2) = ?

Answers

Answer 1

Answer:

Answer:

f(- 2) = - 1

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x), that is

f(- 2) = 2(- 2) + 3 = - 4 + 3 = - 1

For $2^(x)$ + 3, then

f(- 2) = $2^(-2)$ + 3 = $(1)/(4)$ + 3 = 3.25

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Write as a mixed number if possible 2÷3/2=?

Answers

2 divide by 3/2 =
1 1/3 (mixed number)

What is 4 1/4 divided by 2 1/2

Answers

Answer:

1.7

Step-by-step explanation:

divide both numerator and denominator

Answer:

1 7/10

Step-by-step explanation:

4 1/4 ÷ 2 1/2

17/4 ÷2 1/2

17/4÷5/2

flip flop

17/4×2/5

17/2×1/5

17/2×5

17/10

1 7/10

Approximately 4/5 of U.S homeowners have a cell phone. what percent of homeowners do not have a cell phone

Answers

The percent of homeowners that do not have a cellphone is 20%.

What are percentages?

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word percent means per 100. It is represented by the symbol “%”

Given here, Approximately 4/5 of U.S homeowners have a cell phone.

Therefore, the fraction of homeowners that do not own a cell phone is 1-4/5=1/5 and thus 1/5×100 = 20%

Hence, The percent of homeowners that do not have a cellphone is 20%.

Learn more about Percentages here:

brainly.com/question/29306119

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Divide 4 by 5 to get .8 Move the decimal two places to get 80%. There is 20% left so 20% percent of homeowners do not have a cell phone

8.21 as a mixed number

Answers

Hey there, 8.21 as a fraction is 8210/1000, the numerator is 8210 because 8.21*1000=8210 and the denominator is out of 100. The fraction 8210/100, can be simplified to 821/100, 821/100 as a mixed number is 8 21/100. Therefore, 8.21 as a mixed number is 8 21/100.

ok to get a mix number you divide the numerator by the denominator in this case which is 21 into 100 can only go into 100 4 times so 21 into 100 is 8 4/16 reduced would be 8 1/2

1- Caleb's family room has the dimensions shown. He needs to find the area of the room so that he knows how much carpet to buy. Complete the area model below to find the area of the family room.