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Dafna11 [192]
3 years ago
5

4-[2.5(5.4+2.6)-(-7.2)

Mathematics
1 answer:
valkas [14]3 years ago
7 0
-23.2 I think this is the answer
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What is 7.8×10^5 hours in days?
iragen [17]

Answer:

32500 Days

Step-by-step explanation:

7.8 × 10^{5} = 780000

We know that there are 24 hours in a day.

⇒24 Hours = 1 Day

therefore 780000 hours = \frac{780000}{24} = 32500 Days

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3 years ago
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3 years ago
You need a piece of paper to measure 65.31 cm. If you tape two together that each measure 38.9, how much do you need to cut off?
siniylev [52]

Answer:

12.49 cm

Step-by-step explanation:

One paper is 38.9, so two papers are 77.8 cm.

To find the length you need to cut off, you need to find how much extra you have.

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8 0
3 years ago
Read 2 more answers
If k=[-4 | 2, 6 | -3] and m=[2 | 8, -2 | 5] what is x when 2x -k = m
marshall27 [118]

Answer:

  x = [-1 | 5, 2 | 1]

Step-by-step explanation:

We assume your notation is used to describe 2×2 matrices.

Solve for x:

  2x -k = m

  2x = m + k . . . . add k

  x = (1/2)(m +k) . . . . multiply by 1/2

Fill in the values:

  x = 1/2[2+(-4) | 8 +2, -2+6 | 5+(-3)]

  x = [-1 | 5, 2 | 1]

5 0
3 years ago
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