3 years ago

Please see attachment for the question.

Mathematics

1 answer:

stich3 [128]3 years ago

4 0

Step-by-step explanation:

(f.g)(x) = (9x²-2x-9)(11x-9)

= 99x³-81x²-22x²+18x -99x +81

= 99x³ -103x²-81x +81

optionB

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In ΔBCD, \overline{BD}

Alex787 [66]

Answer:

30degrees

Step-by-step explanation:

Given

Exterior angle m<CDE = 7x - 19 degrees

interior angles are

m<BCD = 2x - 1

m<DBC = x+10

Since the sum of the interior angles is equal to the exterior, hence;

2x - 1 + x+10 = 7x - 19

3x + 9 = 7x - 19

3x - 7x = -19 - 9

-4x = -28

x = 28/4

x = 7

Get m<CDE

m<CDE = 7x - 19

m<CDE = 7(7) - 19

m<CDE = 49 - 19

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

a triangle includes one angle that measures 72 degrees. which pair could be the measures of the other two angles of the triangle

Otrada [13]

Answer:

72,72,36

Step-by-step explanation:

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4 years ago

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4 years ago

-5x - 2y = 13<br> -4x + y = 0<br> Solve by substation

kotegsom [21]

Answer:

(x,y)=(-1,-4)

Step-by-step explanation:

-4x + y = 0

+4x +4x

y=4x

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3 years ago