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Greeley [361]
3 years ago
6

SHOPPING Sera went to the mall and made four purchases. She spent $2.85, $5.11, $7.89, and $4.15. Use mental math to determine h

ow much money Sera spent at the mall.
Mathematics
2 answers:
djverab [1.8K]3 years ago
6 0

Answer:

$20.00  

Step-by-step explanation:

  $2.85 =   3.00  - 0.15

  $5.11   =   5.00 + 0.11

  $7.89 =   8.00 + 0.11      Mentally cancel the 0.11s

  $4.15 =   4.00 + 0.15     Mentally cancel the 0.15s

TOTAL = 20.00 + 0.00

TOTAL = $20.00

Katena32 [7]3 years ago
4 0

Answer:

She spent around 20$

Step-by-step explanation:

add all whole numbers and estimate the cents.

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Answer:

34 square feet

Step-by-step explanation:

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The formula to find the length is, p-w*2=x x÷2=l

because, perimeter is l+l+w+w and area is just l*w

4.25*2=8.50

24.50-8.50=16

16÷2=8

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So now we need to multiply the length and width to get the area.

8*4.25=34 sq. ft.

I hope that helps!

3 0
3 years ago
How to rewrite decimals to fractions before adding
torisob [31]
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7 0
3 years ago
Read 2 more answers
Mr.Q's class is having a giveaway where his students can receive 100 classroom credits. He will pull names out of a hat and sele
Sladkaya [172]

Answer:

1/1560

Step-by-step explanation:

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3 years ago
A set of positive and negative rational numbers is shown.
Troyanec [42]
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2 years ago
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What are the zeros of the quadratic function f(x) = 2x2 + 16x – 9?
Lena [83]
To find the zeros of this equation you need to first set it equal to zero
2x2 + 16x - 9 = 0
But since you can't FOIL this equation you need to move the non-variable number over
2x2 +16x = 9
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x(2x + 16) = 9
x = 9
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2x = -7
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So your zeros would be at x = 9, and -7/2
7 0
3 years ago
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