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3 years ago

Help with 30 please I forget what supplementary and complementary mean

Mathematics

1 answer:

NARA [144]3 years ago

6 0

Answer:

a. ∠AMB, ∠BMC

b. ∠BMC, ∠CMD

Step-by-step explanation:

supplementary=angles add up to 180°

Complementary=angles add up to 90°

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What is The area of this trapezoid?

Dennis_Churaev [7]

Answer:

Step-by-step explanation:

area of regualr trapezoid = 1/2 ( sum of parallel sides )( height)

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3 years ago

Help me with #5 pleaseeeeeeeeeee

earnstyle [38]

Answer:

$\angle 1 = 45$ degrees

Step-by-step explanation:

Sum of 3 angles in a triangle is 180..

The angles given are:

7x + 12

So we sum to 180 and write:

$60+7x+12+\angle 1=180\\72+7x+\angle 1=180\\7x+\angle 1=108$

Also, straight angle is 180 degrees, thus Angle 1 and (14x + 9) angle is sum to 180, thus we can write:

$14x+9+\angle 1=180\\14x + \angle 1=171$

Or we can write this as:

$14x + \angle 1=171\\\angle 1 = 171 - 14x$

We substitute this expression for Angle 1 into 1st equation we got and solve for x first,

$7x+\angle 1 = 108\\7x+( 171 - 14x)=108\\-7x=-63\\x=9$

Since x = 9, the angle "14x + 9" would be:

14(9) + 9 = 135

Hence Angle 1 would be:

$\angle 1 + 14x + 9 = 180\\\angle 1 + 135 = 180\\\angle 1 = 45$

6 0

3 years ago

Subtract 5x^2-2x-55x 2 −2x−5 from -2x^2-5x-7−2x 2 −5x−7.

leva [86]

Answer:

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Step-by-step explanation:

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3 years ago

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Help needed

Alexeev081 [22]

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2 years ago

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