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Dima020 [189]
3 years ago
13

Solving systems of equations by substitution y= x - 8 y = -4

Mathematics
1 answer:
leva [86]3 years ago
4 0
It should be x=-4 and y= -12
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Expand and simplify 3(2a+3b)+2(a+2b)
ICE Princess25 [194]

Answer:

8a+13b

Step-by-step explanation:

First start by multiplying the coefficient with the parantheses.

3(2a+3b)+2(a+2b)

6a+9b+2a+4b

8a+13b

This equation cannot be further simplified.

5 0
3 years ago
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(HELP!!!) Please Factor Completely: <br> 9x^2y^2-27x^2y-72y^2+216y
Olegator [25]

Answer:

Can u space them out so i know which ones are exponents

Step-by-step explanation:

4 0
2 years ago
Please help!! I need to know this by today
mario62 [17]
Answer=60

Since the base of the prism is a right triangle, we can use the pythagorean theorem to solve for x.

a²+b²=c²
plug in the data
a²+24²=30²
a²+576=900
subtract 576 from both sides
a²=324
sq root
a=18
So x=18


The formula for the volume of a triangular prism is...

V=(area of the base)*(height)
V=1/2bh*H      where b=base of triangle h=height of triangle, H=height of prism
plug in the data that we know
720=1/2*18*24*H
720=216*H
divide both sides by 216
3 1/3=H

So x=18 and y=3 1/3 or 3.33 repeating

The product of the two

18*3 1/3=60

Answer=60


6 0
3 years ago
Read 2 more answers
Please help I need to get this correct
ZanzabumX [31]

Answer: i think the answer is 2

Step-by-step explanation:

sorry if im wrong please forgive me

3 0
3 years ago
Class records at rockwood college indicate that a student selected at random has probability 0.75 of passing french 101. for the
Kipish [7]

To get the probability of two individual events both occurring, you have to multiply the probabilities of their individual events occurring. Therefore in this problem, the probability that a student selected at random will pass both French 101 and French 102 is 0.683 (.75 x .91). The answer is already rounded to three decimal places.

4 0
3 years ago
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