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Sidana [21]
3 years ago
5

Find the sum of 9a^2/a and 7a^2/a

Mathematics
1 answer:
mario62 [17]3 years ago
8 0

Answer:

16a

Step-by-step explanation:

9a^2/a=9a

7a^2/a=7a

9a+7a=16a

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If x – 10 is a factor of x2 – 8x – 20, what is the other factor?
Svetach [21]

Answer:

The other factor is (x+2)

Step-by-step explanation:

we know that

(x-a)(x-b)=x^{2}-xb-xa+ab

(x-a)(x-b)=x^{2}-(a+b)x+ab

In this problem we have

x^{2} -8x-20

and

a=10 -----> because is a factor

substitute and solve for b

x^{2} -8x-20=x^{2}-(10+b)x+10b

so

8=10+b\\b=-2

Verify in the second equation

-20=10b -----> -20=10(-2) -----> -20=-20--> is ok

The other factor is (x+2)

3 0
3 years ago
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Is 78.006 greater, less, or equal to 78.01
skad [1K]
Less, 78.01 has a one in the hundredths place, while 78.006 has a 0, and 0 < 1.
6 0
3 years ago
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HELPP HELPP HELPP HELPP HELP PLZ
iogann1982 [59]

Answer:

Volume= 216 cubic yards

Surface area: 276 square yards

Step-by-step explanation:

Find volume of rectangular prism:

V= lxwxh

V= 3x18x4

= 216 cubic yards

Find surface area:

SA= 2 x (front/back area) + 2 x (right/left area) and 2 x ( bottom/top area)

Front and Back Area:

A= l x w

A = 18 x 3

= 54 square yards

Right/ left Area:

4 x 3

= 12 square yards

Top/ Bottom Area:

18 x 4

= 72 square yards

54^2+12^2+72^2

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3 years ago
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I need help on this​
luda_lava [24]

Answer:

C. 16

Step-by-step explanation:

First of all, these two angles are corresponding angles, which means that they equal each other. So, the equation here would be: 2x+18= 4x-14.

Step 1- Move the variables to one side.

2x+18= 4x-14

-2x       -2x

18= 2x-14

Step 2- Add 14 to both sides of the equation.

18= 2x-14

+14      +14

32= 2x

Step 3- Divide 2 to both sides of the equation to isolate the variable.

<u>32</u>=<u> 2x</u>

2     2

x= 16

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3 years ago
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2⁄3 − 1⁄2=<br> Answer as a fraction
OverLord2011 [107]

Answer: 1/6

Step-by-step explanation:

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