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OLga [1]
3 years ago
13

It took Marty 42 minutes to write a book report then he spend 18 minutes correcting his report explain how you use mental math t

o find how long Marty spend on his book report
Mathematics
2 answers:
kondaur [170]3 years ago
6 0
<h2>Answer:</h2>

The time Marty spend on his book report is:

                    60 minutes or 1 hour

<h2>Step-by-step explanation:</h2>

It took Marty 42 minutes to write a book report then he spend 18 minutes correcting his report.

This means that the total time i.e. the overall time he spends on his book is:

Time he spend on writing the book+ The time he spend on correcting his book report

Hence,

Total time= 42 minutes+18 minutes

i.e.

Total Time= 60 minutes

Also, we know that:

        1 hour= 60 minutes.

Hence, his total time is: 60 minutes or 1 hour.

OleMash [197]3 years ago
5 0
It took Marty 60 minute to finish the report mentally you add 42 plus 8 is 50 plus 10 (because 18 minus 8 is 18) then that equals 60
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Item 16<br> Solve the equation.<br><br> −4/9f=−3
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The answer is f=\frac{4}{27}
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3 years ago
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Please help me I have to turn in by 8:00
Diano4ka-milaya [45]

Answer:

A 2

Step-by-step explanation:

When we divide x by 9 there is some whole number we will call y plus a remainder of 4

x/9 = y  remainder 4

Writing this in fraction form

x/9 = y + 4/9

Multiplying each side by 9

9*x/9 = 9* y + 4/9 *9

x = 9y +4

Multiply each side by 2

2x = 2*(9y+4)

2x = 18y +8

Add 3 to each side

2x+3 = 18y +8+3

2x+3 = 18y +11

Divide each side by 9

(2x+3)/9 = 18y/9 +11/9

              = 2y + 9/9 +2/9

               =(2y+1 + 2/9)

  We know y is a whole number and 1 is a whole number so we can ignore 2y +1 when looking for a remainder)

2/9 is a fraction

Taking this back from fraction form to remainder from

                 (2y+1) remainder 2

7 0
3 years ago
Two bags of cereal are packed in a box. The total weight of the box and the two bags of cereal is 58.00 ounces. One bag of cerea
blsea [12.9K]

Answer:

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6 0
2 years ago
850-53x m= 720-39x m
insens350 [35]

Answer:

9.286

Step-by-step explanation:

I'm not guaranteeing this answer. If this is correctly written without any indication of how to deal with x, then here is as much as you can do.

850-53x m= 720-39x m                         Subtract 720 from both sides.

850 - 720 - 53x = 720 - 720 - 39xm      Combine

- 53xm + 130 = - 39xm                             Add 53x

-53x+53xm + 130 = -39x + 53xm            Combine

                      130 = 14xm                         Divide by 14

xm = 130/14

xm = 9.28

===============================

You can use the same steps above. I'm abbreviating the steps because they are the same.

I'm sure there is more to the problem, but I can't imagine what it is. If you have additional directions, put it under this answer. I will get it as a comment.

850-53m= 720-39m

850 - 720 - 53m = - 39m

130 - 53m = - 39m

130 = -39m + 53m

130 = 14m

130/14 = m

m =9.286

4 0
3 years ago
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