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Maslowich
4 years ago
13

PLEASE HELP ME!!!! I need help with number 14.

Mathematics
1 answer:
gavmur [86]4 years ago
4 0

Answer:

D

Step-by-step explanation:

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Brenda says a good estimate for 50× 31 3/4 is 800. is this correct? Explain.
QveST [7]
At first glance, it seems like a good estimate; big numbers make bigger number.
But, this is multiplication, which means big numbers will make an extraordinarily big number, in proportion to the numbers themselves.
If you round 31 3/4 up to 32, you can multiply that by 50. To make the estimate easier, multiply 50 by 2,
50 x 2 = 100
Take the zeros off 50 and 30 to make this a bit simpler, and multiply 5 by 3,
5 x 3 = 15
Add each of the zeros you took off to the 15 to make 1500 (1 zero was taken off 50, and 1 off of 30),
And then add 1500 to that other 100
1500 + 100 = 1600
A good estimate for 50 x 31 3/4 would be 1600, not 800.
Therefore,
No. Brenda's estimate of 800 is NOT a good estimate.
3 0
4 years ago
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What is the area of a circle if the diameter is 16 millimeters? ​
Pavlova-9 [17]

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▹ Answer

<em>A ≈ 201.06 mm²</em>

▹ Step-by-Step Explanation

A = πr²

Radius = 1/2d

Radius = 1/2(16)

Radius = 8

Substitute:

A = π8²

A ≈ 201.06 mm²

Hope this helps!

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7 0
3 years ago
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Find four consecutive even integers whose sum is 100 what are the integers
Dovator [93]

X → first

X + 2 → second

X + 4 → third

X + 4 → fourth

x + x + 2 + x + 4 + x + 6 = 100

4x + 12 = 100

4x = 88  

x = 22

x + 2 = 24

x + 4 = 26

x + 6 = 28

So your integers are 22, 24, 26, and 28.

6 0
3 years ago
A number is less than 4 units from 0
Rasek [7]

A number is less than 4 units from 0

-4<x<4

8 0
4 years ago
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Rose, Bette and Cindy equally shared 5 boxes of crayons. Write an equation to show how much each girl got. (each box of crayons
labwork [276]
Since there was five boxes of crayons and there was 3 crayons in each one, the would be 15 in total. (crayons) And there was three people, 15/3=5 crayons per person. 
Equation: 3x=15
x stands for the amount of crayons each person gets.
4 0
3 years ago
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