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3 years ago

EMERGENCY PLZ HELP ASAP

Mathematics

2 answers:

USPshnik [31]3 years ago

5 0

Answer:

C) 50

Step-by-step explanation:

x+90+90+y+z=360

270+y+z=360

y+z=90

Therefore, C) 50

frozen [14]3 years ago

3 0

Answer:

50 degrees

Step-by-step explanation:

Ah ok so we know that x= 80 degrees.

y+z= x.

So all you have to do is input the values.

80-30=50

Hence the answer is C) 50

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Five times the difference of twice a number and seven is negative twenty-five. Find the number.

Sati [7]

The number is 1

Step-by-step explanation:

Let x be the required number

Then according to given statement

Five times the difference of twice a number and seven is negative twenty-five.

$5(2x-7) = -25$

Simplifying

$10x-35 = -25\\$

Adding 35 on both sides

$10x-35+35 = -25+35\\10x = 10$

Dividing both sides by 10

$\frac{10x}{10} = \frac{10}{10}\\x = 1$

Verification:

$5[2(1)-7] = -25\\5(2-7) = -25\\5(-5) = -25\\-25=-25$

Hence,

1 is the number

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