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Sliva [168]
3 years ago
14

How do i estimate then multiply then use estimate to check answer

Mathematics
1 answer:
Ann [662]3 years ago
6 0
Say your number is 27 and u need to estimate to the nearest number 27 is closer to 30 than 20 u would multiply 30
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2/7m-1/7=3/14<br><br> Please solve showing work
lawyer [7]
(2/7)m - (1/7) = 3/14
2m/7 =(3/14) + (1/7)
2m/7 = (3/14) + 2(1/7)
here we are multiplying 2 with 1/7 to make the denominator same for addition.
2m/7 = (3/14) +(2/14)
2m/7 = (3 + 2)/14
2m/7 = 5/14
2m = (5 *7)/14
2m = 35/14
2m = 5/2
m = 5/4
m = 1.25
So the value of "m" is 1.25
7 0
3 years ago
Read 2 more answers
Which expression is an example of the associative
LenKa [72]

Answer:

A.

Step-by-step explanation:

This property states that when three or more  are added (or multiplied), the sum (or the ) is the same regardless of the grouping of the  (or the multiplicands).

8 0
4 years ago
What is the product of 1.6×10-3 and 3.2×10-1?
True [87]

Answer:

403

Step-by-step explanation:

8 0
3 years ago
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What are the correct steps for solving the equation 9x^2=108?<br><br> A. X^2= 99
Georgia [21]

Answer:

x=sqrt of 12

Step-by-step explanation:

First, you divide by 9 on both sides:

x^2= 108/9

Then you solve that:

x^2 = 12

Then you find the root of both sides:

sqrt (x^2)= sqrt (12)

and you get:

x= sqrt of 12 which is about 3.46... OR 2√3

5 0
3 years ago
1) Janet and Miriam each bought a bicycle for $140.
Bingel [31]

Answer:

$7

Step-by-step explanation:

JANET:

140 * 0.7 = 98

MIRIAM:

140 * 0.75 = 105

105-98=7

8 0
3 years ago
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