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hichkok12 [17]
2 years ago
8

2.) If ZA = (20 – 2m)º and ZD = (m – 130°, what is the value of m? ​

Mathematics
2 answers:
svetlana [45]2 years ago
8 0

Answer:

The answer is 50°

Step-by-step explanation:

We know that any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal.

So,

∠A = ∠D

∠A = (20 – 2m)°, ∠D = (m – 130)°

20 – 2m = m – 130

3m = 150

3m/3 = 150/3

m = 50°

Thus, The value of m is 50°

vivado [14]2 years ago
3 0

Answer:

m = 50

Step-by-step explanation:

∠ D and ∠ A are vertically opposite angles and are congruent , then

m - 130 = 20 - 2m ( add 2m to both sides )

3m - 130 = 20 ( add 130 to both sides )

3m = 150 ( divide both sides by 3 )

m = 50

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Ivahew [28]
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8 0
3 years ago
Please help with 1-9<br> 43 points
Paul [167]

Remark

I'll do two from each group, leaving you with 1. I just leave the answer for the one I don't do or a hint it it is long. That's more than we are instructed to do (which is three parts per posted question).

One

Two ratios form a proportion because they both equal the same thing when you reduce them to the point where the ratios are prime to each other.

3/4 = 12/16

3/4 can't be reduced any further. When both 12 and 16 are divided by 4, the result is 3/4

Two

<em><u>Formula</u></em>

Sale Price/Original Price = 3/4

<em><u>Solve</u></em>

Sale Price / 64 = 3/4           Multiply both sides by 64

Sale Price = (3/4)*64

Sale Price = 48

Three

682 Trillion atoms of hydrogen.

Four

<em><u>Formula</u></em>

rotations / 40 seconds = rotations / second

<em><u>Solve</u></em>

2000 / 40 seconds = rotations / 1 second    Just divide

50 rotations/1 second = rotations / second.

Five

<em><u>Formula</u></em>

Herd of cows / Total pounds of milk = 1 cow / pounds of milk

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Herd = 12

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<em><u>Solve</u></em>

12/224998 = 1 / x             Cross multiply

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Six

0.5 m in 1 second.

Seven

<em><u>Formula</u></em>

Pages / hour = pages / minute

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1 hour = 60 minutes.

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4.5 / 1 hour. But 1 hour = 60 min

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Eight

This is also not a true proportion. The best way to do this is called unit analysis.

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Nine                                              

Note: there are 1760 yards in a mile.

1 gallon will take you 32000 yards or 18 miles. Do this the same way eight was done.

7 0
3 years ago
Read 2 more answers
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