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babunello [35]
3 years ago
11

Estimate the product. Round each number to its greatest place value, then multiply.

Mathematics
2 answers:
balandron [24]3 years ago
8 0
2100 is the estimate.
nydimaria [60]3 years ago
7 0
689 = 700
3.10 = 3
700 x 3 = 2,100
the answer is 2,100 
Hope this helps!
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Step-by-step explanation:

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28. What is the maximum number of real roots
attashe74 [19]
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3 years ago
If the mean of A and B is 20, the mean of B and C is 24 and the mean of A,B and C is 18.What is the mean of A and C?
Zielflug [23.3K]

Answer:

the mean of A and C is 10

Step-by-step explanation:

Given;

mean of A and B = 20

mean of B and C = 24

mean of A, B and C = 18

\frac{A + B}{2} = 20\\\\A+ B = 40 ---- (1)\\\\\frac{B + C}{2} = 24\\\\B+ C = 48----(2)\\\\\frac{A+ B+ C}{3} = 18\\\\A+ B+ C= 54---(3)\\\\From (1); \ A = 40 - B\\\\From(2); \ C = 48 - B\\\\\Substitute \ the \ values \ of \ A \ and \ C \ into \ (3)\\\\(40-B) + B + (48-B) = 54\\\\simplify;\\\\(40 + 48) + (B-B-B)= 54\\\\88 -B = 54\\\\-B = 54-88\\\\-B = -34\\\\B = 34

Recall; A = 40 - B

           A = 40 - 34

           A = 6

Also, C = 48 - B

        C = 48 - 34

       C = 14

Therefore, the mean of A and C is calculated as;

= \frac{A + C}{2} \\\\= \frac{6 + 14}{2} \\\\= 10

5 0
3 years ago
Pep Boys has one on sale for $79.99 and the tax rate is 7.75%. You pay with a Benjamin. How much change will you get back?
nexus9112 [7]

Answer:$13.82

Step-by-step explanation:

$79.99+7.75%=$86.18

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5 0
3 years ago
Blain exchanges $100 for yen before going to Japan. If each U.S. dollar is worth 88.353 yen, how many yen should Blain receive?
Tcecarenko [31]
To figure out how many yen all ya have to do is multiply 88.353 by 100 to get the answer 8835.3 yen.
5 0
3 years ago
Read 2 more answers
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