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LekaFEV [45]
3 years ago
13

Please help! ASAP, no bots

Mathematics
1 answer:
iren2701 [21]3 years ago
3 0
Answer: 2x^2 - 18

BTW: the "•" stands for multiply! and the explanations say what you have to do to get there not the next step.

Steps:
(x-3)(2x+6) Set up for solving
x•2x + 6x - 3•2x - 3•6 Use Foil to multiply
2x^2 + 6x - 6x -18 Calculate the product
2x^2 - 18
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Second option would be the answer
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3 years ago
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Determine wheather the graphs of y = 2x+1 and y=-3X-7 are parallel, perpendicular, coincident, or none of these
Readme [11.4K]

Answer:

The two graphs are perpendicular

Step-by-step explanation:

The slope of the first one is the reciprocal of the second. Also I graphed it.

5 0
3 years ago
(08.02)
alukav5142 [94]

Answer:

the median is 80.5

Step-by-step explanation:

first we put them in order

75,76,77,79,80,81,85,86,90,91

the median is the middle number...however, in cases where there are an even number of numbers, ur gonna have 2 middle numbers....so u take the average of those 2 numbers...basically, u add them and divide by 2.

So we have 2 numbers in the middle.....we add them and divide by 2 to get the median.

(80 + 81) / 2 = 161/2 = 80.5 <== the median

8 0
3 years ago
Find the height of a rectangular prism with a 3 in by 4 in base and a volume of 20 cubic inches
Crank

Answer:

1 2/3 inches.

Step-by-step explanation:

Volume = area of the base * height so:

20 = 3*4 * h

h = 20/12

h = 1 2/3 inches.

5 0
3 years ago
(8.166×10^8)×(1.515×10^9)
loris [4]
The answer is ....1.237149 x 10^18
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3 years ago
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