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Serjik [45]
3 years ago
11

How do you solve the equation y=2x^2+6x-80 for solution sets?​

Mathematics
1 answer:
Pani-rosa [81]3 years ago
6 0

Answer:

x

−

5

=

0

and

x

+

8

=

0

.

x

=

5

,

−

8

idk why it looks like that xD

:3

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2x + 5 (5x-7) = 100 <br> Please answer and ill make you brainless or whatever
Mice21 [21]

Step-by-step explanation:

2x + 5x(5x-7) = 100

2x+ 25x-35x=100

2x -10x =100

-8x =100

x=2/25

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3 years ago
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If a piece of ribbon is 6 and 1 over 4. feet long, how long is it in inches?
timama [110]
The piece of ribbon would be 75 inches. The ribbon would be 75 inches because 1 foot would be 12 inches and you would multiply 12 by 6 to get 72. Then, 1/4 of a foot would be 3 inches because you could divide 12 and 4(the denominator you are dealing with) to get 3. Then, add 72 + 3 to get 75. Hope this helps!
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4 years ago
NEED HELP FAST PLEASE.
Galina-37 [17]
Question 3 is 8491 mm
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3 years ago
Find the value of a square + b square when a+b = 8 and ab = 10
Ne4ueva [31]

As we know,

\boxed{ \boxed{(a + b) {}^{2}  =  {a}^{2}  +  {b}^{2}  + 2ab}}

now, let's plug the given values to find a² + b²

  • (8) {}^{2}  =  {a}^{2}  +  {b}^{2}  + (2 \times 10)

  • 64 =   {a}^{2}  +  {b}^{2}  + 20

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5 0
3 years ago
A triangular prism is 4 millimeters long. It has a triangular face with a base of 13 millimeters. The volume of the prism is 416
muminat

Answer:

16 millimeters

Step-by-step explanation:

  • Length of the Triangular Prism=4 millimeters
  • Base Length of One Triangular Face=13 millimeters.
  • Volume of the Prism =416 cubic millimeters.

Now:

Volume of a Prism=Base Area X Prism Length

Since we have a triangular base:

Volume of the Prism=(0.5 X Base X Height) X Prism Length

Substituting the given values, we obtain:

416=(0.5 X 13 X Height) X 4

416=26 X Height

Divide both sides by 26

Height of its triangular face=16 millimeters

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