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Zina [86]
2 years ago
10

-2 1/2 - (-1 3/4) ? ​

Mathematics
1 answer:
Olin [163]2 years ago
8 0

Answer:

- 3/4

Step-by-step explanation:

-2 1/2 - (-1 3/4)

Subtracting a negative is like adding

-2 1/2 + (1 3/4)

Get a common denominator of 4

-2 2/4 + 1 3/4

The signs are different so we subtract and take the sign of the larger

2 2/4 - 1  3/4

Borrowing from the 2

1 4/4 + 2/4 - 1 3/4

1 6/4 - 1 3/4

3/4

2 2/4 was larger and it was negative so we add a negative sign

- 3/4

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If a triangle has a height of 7 centimeters and a base of 4 centimeters,what is the area
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Step-by-step explanation:

Area of a triangle is (base×height)/2

(4×7)/2

28/2

=14 centimetres squared

8 0
3 years ago
Abby uses base 10 blocks to show 1,109. She has no thousands cubes and only 9 flats, as shown. Draw longs and units on the chart
Vinvika [58]

Answer:

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Step-by-step explanation:

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_____

<em>Comment on the question</em>

We cannot see the model Abby has put together so far, so we don't know exactly what it takes to finish it. Any longs or units she already shows must be subtracted from the numbers above.

4 0
2 years ago
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Answer:

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10xplanation:

3 0
3 years ago
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iren2701 [21]
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