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icang [17]
3 years ago
13

7(3x+-9) what is the answer

Mathematics
2 answers:
Sidana [21]3 years ago
7 0

Answer:

21x-63

Step-by-step explanation:

morpeh [17]3 years ago
3 0

Answer: 21x - 63

explanation:

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PLEASE HELP 2 QUESTIONS 45 POINTS!!!!!!!!!
Effectus [21]

Answer:

1. -8x² - 16x - 6      a = -8, b = -16, c = -6

1. 4x² - 1                  a = 4, b = 0, c = -1

Step-by-step explanation:

use the 'foil' method:

(4x + 2)(-2x - 3)

F: -8x²     O: -12x       I: -4x       L: -6

-8x² - 16x - 6

(2x + 1)(2x - 1)

F: 4x²     O: -2x       I: 2x       L: -1

4x² - 1

5 0
3 years ago
I need help with this please help me
Fofino [41]

Answer:

+  \times  +  =  +  \\  -  \times  -  =  +  \\  -  \times  +  =  -  \\  +  \times  -  =  -

6 0
4 years ago
What is the value of value of 5/6 ÷ 3/4?​
Evgesh-ka [11]

Answer:

answer is 10/9

:-)))☺️☺️

I hope it helps you

4 0
3 years ago
Read 2 more answers
Please help me with all the questions on both attachments.
Strike441 [17]
I am going to go on a limb here and say that C, or the third one is incorrect. I would love to say it is A, or the first one, but i'm not completely sure, if it's wrong I am really sorry! 
7 0
3 years ago
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Six pyramids are shown inside of a cube. The height of the cube is h units. Six identical square pyramids can fill the same volu
MAXImum [283]

Answer:

(A)The height of each pyramid is One-half h units.

Step-by-step explanation:

Height of the Cube = h units

Volume of the Cube =h^3 $ cubic units

If Base of the cube =Base of the square pyramid

Base of the square pyramid = h units

\text{Volume of a Pyramid}=\dfrac{1}{3}*Base Area*Height

\text{Volume of One Pyramid}=\dfrac{1}{3}*h^2*Height

\text{Volume of Six Pyramids}=6*\dfrac{1}{3}*h^2*Height\\=(2h^2*Height)\:cubic\:units

Since Volume of the Cube = Volume of Six Square Pyramids

Then:

2h^2*Height=h^3\\Height=\dfrac{h^3}{2h^2} \\$Height of each pyramid =\dfrac{1}{2}h \:Units

5 0
4 years ago
Read 2 more answers
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