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max2010maxim [7]
3 years ago
9

Shelly spent 17 min washing the dishes and 38 min for cleaning her room.explain how you can mental math to find how long Shelly

spent on the two tasks
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0
Well you could round which would make it easier but not exact so like 20+40=60 minutes but if it needs to be exact it wouldnt be hard to just do 17+38= 55 hope this helps:)
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IceJOKER [234]
I hope this helps, pls tell me if my way of answering is wrong
Answer:
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5 0
3 years ago
The sides of a parallelogram are 40 and 70 feet long,and the smaller angle has a measure of 36.Find the length of the longer dia
Mumz [18]

Answer:

105 feet.

Step-by-step explanation:

The longer diagonal is opposite the longer angle in the parallelogram.

The longer angle = 180 - 36 = 144 degrees. (Reason: he same side angles  are supplementary).

So, by the law of cosines:

x^ 2 = 40^2 + 70^2 - 2*40*70 cos 140    where x = the diagonal.

x^2 =  11030.50

x = 105.03 feet.

3 0
3 years ago
Brielle and Joshua are running a half marathon race, which is 13.1 miles long. It takes Brielle 10 minutes to run 1.25 miles and
CaHeK987 [17]

Answer: Brielle will run the marathon faster.

Brielle = 104.8 minutes  

Joshua = 157.2 minutes

Step-by-step explanation:

Speed rate = distance /time

Brielle = 1.25 /10 = 0.125 miles per minute

Joshua = 1.5/18 = 0.083333 =1/12 miles per minute

Since 0.125 (Brielle) > 1/12 (Joshua)

Brielle will run the marathon faster.

To calculate the time that takes each one to run the entire race (13.1 miles)

Time= distance / speed

  • Brielle = 13.1 /0.125 = 104.8 minutes
  • Joshua = 13.1 / (1/12)= 157.2 minutes

Feel free to ask for more if needed or if you did not understand something.

8 0
3 years ago
How do you find the equation of a scatter plot?
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m=slope
b=y intercept
3 0
3 years ago
Which of the terms given can you write in the blank box so that the
Serhud [2]
The blank box should be equal to 4
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3 years ago
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