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Bezzdna [24]
3 years ago
5

How do you solve 4 [ 5 ( 12 + 3 ) - 2 ] - 7

Mathematics
1 answer:
laila [671]3 years ago
3 0
4 [ 5 (12 + 3) - 2 ] - 7

4 [ 5 (15) - 2 ] - 7

4 [ 75 - 2 ] - 7

4 [ 73 ] - 7

292 - 7

285
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Find the value of the variables in each figure. Explain your reasoning.
sergiy2304 [10]

Answer:

see explanation

Step-by-step explanation:

The figure has one pair of parallel sides and is a trapezoid.

Each lower base angle is supplementary to the upper base angle on the same side, thus

15x + 30 + 10x = 180 , that is

25x + 30 = 180 ( subtract 30 from both sides )

25x = 150 ( divide both sides by 25 )

x = 6

Also

3y + 18 + 90 = 180 , that is

3y + 108 = 180 ( subtract 108 from both sides )

3y = 72 ( divide both sides by 3 )

y = 24

-------------------------------------------------------------------

2x, 90 and x lie on a straight line and sum to 180 , thus

2x + 90 + x = 180 , that is

3x + 90 = 180 ( subtract 90 from both sides )

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2y and x are alternate angles and congruent , thus

2y = x = 30 ( divide both sides by 2 )

y = 15

4 0
3 years ago
The difference of two numbers is 7. Their sum is 41. What is the smaller number?
kicyunya [14]
17 is the smaller number.
EXPLANATION:

The numbers are 24 and 17.

Difference of 7? Check.

Sum of 41? Check.

BOOM magic
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Oduvanchick [21]

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Ilya [14]

Answer:

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Step-by-step explanation:

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8 0
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Step-by-step explanation:

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