MATHEMATICS MIDDLE SCHOOL

The edge length of a cube is shown. what is the total suface area of this cube?
3m

Answers

Answer 1

Answer:

Hi,

A cube has got 6 faces (having the same area), area of any face is l², where l is the lenght of any edge.

Total surface would be:

A = 6*l² = 6 * 3² m² = 54 m².

Green eyes.

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Ed began reading his book at 9:53. He read for 38 minutes. What time did he finish

Answers

the answer is 10:31
lolol

10:31, because it takes him 7 minutes to read until 10:00, and 38-7=31, so he finishes 31 minutes after 10:00

What is 7÷2= using a disks and check your work

Answers

I don't know what using disk means, sorry but I know that,...

7÷2=3.5

HOPE THIS HELPED :)

7÷2=3.5
Hope I Helped:)

90<-30p+15 how do you solve this

Answers

*To solve an inequality, it's the same as if you were solving an equation: Isolate the desired variable to one side to solve.

Firstly, subtract 15 on both sides: $75<-30p$

Next, you are going to divide both sides by -30. Since you are dividing by a negative, you are going to flip the inequality symbol. Your final answer will be: $-(5)/(2)>p$

Simplify 2x(5x + 3) + 7(5x + 3)

Answers

use distributive property to solve.
2x(5x+3) + 7(5x+3)
1. distribute

2x•5x = 10x^2
2x•3= 6x

10x^2+6x

7•5x = 35x
7•3= 21

35x+21

2. combine like terms

10x^2+6x+35x+21

10x^+ 41x +21 [final answer]

What is the greatest common factor of 9 21 60?

Answers

The greatest common factor (GCF) of 9, 21 and 60 is: 3

Factors of 9: 1, 3, 9
Factors of 21: 1, 3, 7
Factors of 60: 1, 2, 3, 4, 5, 6

The common factors between the three numbers are 1 and 3, but since 3 is the highest number, it is considered the GCF.

The tire on franks bike moves 75 inches in one rotation. How many rotations will the tire have made after frank rides 50ft?