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romanna [79]
3 years ago
13

What is a reasonable estimate for the problem ? -3/2 multiply by ( -5 1/4 )

Mathematics
2 answers:
Nat2105 [25]3 years ago
5 0
= -3/2 * -5 1/4
convert 5 1/4 to improper fraction

= -3/2 * -21/4
multiply numerators; multiply denominators

= (-3*-21)/(2*4)
multiply in parentheses

= 63/8
convert back to mixed number

= 7 7/8


ANSWER: Since the exact answer is the mixed number 7 7/8, a reasonable estimate is 8.

Hope this helps! :)
creativ13 [48]3 years ago
4 0

Answer:

10

Step-by-step explanation:

iready

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The solution is B = 43

Step-by-step explanation:

Simplify and solve for the unknown for 5(B + 3) = 4(B - 7) + 2B

  • Simplify each side
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∵ 5(B + 3) = 4(B - 7) + 2B

- Multiply the bracket (B + 3) by 5 in the left hand side and multiply

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∵ 5(B + 3 ) = 5(B) + 5(3) = 5B + 15

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- Add the like terms in the right hand side

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To check the answer substitute the value of B in each side if the two sides are equal then the solution is right

The left hand side

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The right hand side

∵ 4(43 - 7) + 2(43) = 4(36) + 86 = 144 + 86 = 230

∴ L.H.S = R.H.S

∴ The solution B = 43 is right

The solution is B = 43

Learn more:

You can learn more about the solution of an equation in brainly.com/question/11229113

#LearnwithBrainly

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