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3 years ago

Jamie has a square mirror with side lengths of 6 inches.

Mathematics

2 answers:

Sophie [7]3 years ago

8 0

Are we supposed to find the area? If so, It's 36 because 6 times 6 equals 36 :p Hope I helped.

Sidana [21]3 years ago

8 0

Area is just L•W
Since all the sides are the same just multiply 6•6.
If you are looking for perimeter just add all 4 side lengths up: L+L+W+W
6+6+6+6.

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2 years ago

If fence poists are to be placed in a row 7 feet apart, how many posts are needed for 210 feet of fence?

ollegr [7]

Answer:

Step-by-step explanation:

210 ft ÷ 7 ft = 30

There are 30 7-ft lengths of fence.

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2 years ago

Complete the table with the number of sit-ups you have to do sunday so that the mean number of sit-ups per day is 100

marissa [1.9K]

The mean is the average of the numbers.

It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

Let the number of sit-ups you have to do Sunday be x. Then the sum of all sit-ups is

100+65+120+150+90+0+x=525+x.

The number of days is 7.

Thus, the mean is

$\text{mean}=\dfrac{525+x}{7}.$

You know that the mean number of sit-ups per day is 100, equate these two means and solve the equation:

$\dfrac{525+x}{7}=100,\\ \\525+x=700,\\ \\x=700-525,\\ \\x=175.$

Answer: 175 sit-ups

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3 years ago

Find the area of the rhombus below.

scoray [572]

<u>Step-by-step explanation:</u>

diagonal 1 (d1) = 5 + 5

= 10 ft

diagonal 2 (d2) = 8 + 8

= 16 ft

area of rhombus = 1/2 × d1 × d2

= 1/2 × 10 × 16

= 80 ft²

<h2>--------------------------------</h2><h2>Follow me</h2>

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3 years ago

A cable is 30 meters long. How long is the cable in decimeters? Be sure to include the correct unit in your answer.

vekshin1

One metre=10 decimetres.
Therefore 30 metres = 30*10=300 decimetres.

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3 years ago