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Alex777 [14]
4 years ago
9

14. Why is estimation an important tool

Mathematics
1 answer:
DedPeter [7]4 years ago
8 0

Estimation is a very important skill in our life, For students,estimating is an important skill. First and foremost, we want students to be able to determine the reasonableness of their answer. Without estimation skills, students aren't able to determine if their answer is within a reasonable range.

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Estimate by rounding the first factor to the nearest thousand. 1,912 x 8
Vika [28.1K]

Answer:

15,000

Step-by-step explanation:

1912* 8 =15,296

To the nearest thousand = 15,000

5 0
3 years ago
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The sum of 5 consecutive integers is 120. What is the third number in this sequence?
aliina [53]
Ok so

x - the smallest
The other 4 are : x+1, x+2, x+3, x+4
We know that sum is 120
So
x+x+1+x+2+x+3+x+4=120
Combine like terms
5x+10=120
Subtract 10 on both sides
5x=120-10
5x=110
Divide by 5 on both sides
X=22
The third number is x+2 = 22+2=24

3 0
3 years ago
Simplify the expression using properties of operations. (−r−5)−(−2r−4)
Pachacha [2.7K]

Answer:r-1

Step-by-step explanation:

(-r-5)-(-2r-4) Or (-r-5)-(-2r-4)

-r+-5+2r+4. -r-5+2r+4

r-1 r-1

You bring down the first Parentheses Then have to multiply the (implied 1) -1•-2=2 and -1•-4=4 and do the math regularly

8 0
3 years ago
NEED HELP PLEASEE!!!<br> Determine the value of the equation if x = 4.<br> 3(2x - 1) - 11 = ?
ella [17]

Answer:

Step-by-step explanation:

6x - 3 - 11

6(4) - 3 - 11

24 - 14

10

4 0
3 years ago
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Simplify the expression. <br><br> ( I got 144, but i'm not sure)
g100num [7]

Answer:

144 is correct

Step-by-step explanation:

13 - 1 is 12

12 times 12 = 144

144 divided by 2 is 72

72 times 2 is 144

8 0
3 years ago
Read 2 more answers
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