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4 years ago

Explain why √-4 • √-4 ≠ 4. What is the correct value?

1 answer:

3 0

Answer:you have to multiply the two fours which equals 16 and then because there is a negative sign, your answer would be -16

Step-by-step Its an other expression to use

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Please help me out, I will list you brainliest if you get this right

const2013 [10]

Answer:

1. Quotient; 5.25

2. Divisor; 4.994

3. Dividend; 36.98

4. Quotient; 12.85

5. Divisor; 2.43

6. Divisor; 75.36

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Uma professora reservou 6 folhas de papel colorido para cada um de seus 28

Lapatulllka [165]

Answer:

4 students were missing

Step-by-step explanation:

A teacher reserved 6 sheets of colored paper for each of her 28

students do a job. As some students were missing, the teacher gave 7

sheets for each student present. How many students were missing?

6*28=168

4 0

3 years ago

A store sells towels for 25% off the regular price. The regular price of a beach towel is $24.50. Which expression represents th

garik1379 [7]

The answer is A because 25 percent is equivalent to .25

5 0

3 years ago

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If 15 workers did a job is 8 hours, how long would it take 5 workers to do half of this job?

babymother [125]

Since 15 workers did 8 hours of work, the total amount of work needed is 120 hours. Half of this job would be 60 hours. Then divide this amount by the 5 workers doing the job. This would make the job 12 hours

8 0

3 years ago

Read 2 more answers

A glass paperweight has a composite shape: a square pyramid fitting exacty on top of an 8 centimeter cube. The pyramid has a hei

ArbitrLikvidat [17]

Answer:

Part 1) The volume of the paperweight is $576\ cm^{3}$

Part 2) The total surface area of the paperweight is $400\ cm^{2}$

Step-by-step explanation:

Part 1) what is the volume of the paperweight?

we know that

The volume of the paperweight is equal to the volume of the square pyramid plus the volume of the cube

step 1

Find the volume of the pyramid

The volume of the pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the square base

H is the height of the pyramid

$B=8^{2}=64\ cm^{2}$

$H=3\ cm$

substitute

$V=\frac{1}{3}(64)(3)=64\ cm^{3}$

step 2

Find the volume of the cube

The volume of the cube is equal to

$V=b^{3}$

$V=8^{3}=512\ cm^{3}$

step 3

Find the volume of the paperweight

$64\ cm^{3}+512\ cm^{3}=576\ cm^{3}$

Part 2) what is the total surface area of the paperweight?

we know that

The total surface area of the paperweight is equal to the surface area of 5 faces of the cube plus the lateral area of the pyramid

step 1

Find the surface area of 5 faces of the cube

$SA=5b^{2}$

$SA=5(8^{2})=320\ cm^{2}$

step 2

Find the lateral area of the pyramid

$LA=4[\frac{1}{2}bh]$

$LA=4[\frac{1}{2}(8)(5)]=80\ cm^{2}$

step 3

Find the total surface area of the paperweight

$320\ cm^{2}+80\ cm^{2}=400\ cm^{2}$

8 0

3 years ago