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Hoochie [10]
3 years ago
7

Factor 40x^3-5y^3 COMPLETELY

Mathematics
1 answer:
lianna [129]3 years ago
7 0
40x^3-5y^3=5(8x^3-y^3)=5[(2x)^3-y^3]\\\\use:a^3-b^3=(a-b)(a^2+ab+b^2)\\\\=5(2x-y)[(2x)^2+2xy+y^2]=5(2x-y)(4x^2+2xy+y^2)
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Write an equation that represents a line that is parallel to y=3/4x and passes through the point (2,1).
Kisachek [45]
Insert the slope and point into point-slope form:-

y - 1 = 3/4(x - 2)
y = 3/4x - 6/4 + 1
y = 3/4x -  1/2
6 0
3 years ago
A novel is 11/16 inch thick. If there are two shelves, each 99 inches wide, how many novels will be able to fit on the two shelv
34kurt
First let's just combine the shelves to make it easier. 99 + 99 = 198.

We can simply divide 198 by 11/16 to get the answer. First let's convert 11/16 to a decimal.

11 divided by 16 is 0.6875

So 198 divided by 0.6875 is 288.

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8 0
3 years ago
Mark got 20% raise for his salary. If this salary was $1800 what is the new salary
elena-14-01-66 [18.8K]
Salutations!

Mark got 20% raise for his salary. If this salary was $1800 what is the new salary?

So lets solve this!

Mark got 20% "raise" for his salary. It clearly indicates that it is percentage of increase, so therefore, after solving out all the sum, we would be adding up 1800 to get the total of the new salary.

Lets form this into statements ----

Percentage increase = 20%

Mark's old salary = $1800

Mark's new salary = 20 × 1800/100

Cancel out the zeros to make it more logical ----

20 × 18/1

= 360.

Now, we need to add 1800 and 360 to get Mark's new salary

1800 + 360 = $2160.

Mark's new salary is $2160.

Hope I helped :D


7 0
3 years ago
You earned a 90% and an 85% on your first two homework assignments. What score do you need to earn on the third assignment to ha
san4es73 [151]
90+85+x/3=83
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5 0
2 years ago
A car model box has “8 scale” printed on the outside of the box. If the actual car is 178 inches long, what is the length of the
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Length of the model is 22.25 in.
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3 years ago
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