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asambeis [7]
3 years ago
6

How can I solve this equation 5x^2-2x-6=-2x^2+9x

Mathematics
1 answer:
wel3 years ago
3 0
Add 2x^2 to both sides
7x^2-2x-6=9x

Subtract 9x from both sides
7x^2-11x-6=0

Factor by using slip and slide
x^2-11x-42
(x-14)(x+3)
(x-14/7)(x+3/7)
(x-2)(7x+3)

Then use the Zero Product Property to find roots
x-2=0
x=2

7x+3=0
7x=-3
x=-3/7

Final answer: x=-3/7, x=2
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8 0
3 years ago
Calculate the volume of the figure.
dimaraw [331]

Answer: The volume is 33 cubic centimeters.

Step-by-step explanation:

First find the volume of the square pyramid on top of the cube. To find the volume of the square pyramid you use the volume  a^2*h/3 a is the side length of the base of the square pyramid and h is the height all divide by 3.

So we can say that the side length of the base of the square pyramid is 3 because it has the same side length base as the cube.

V= 3^2 * 2 /3

V= 9 * 2 /3

V= 18/3

v= 6  

So the volume of the square pyramid is 6 so now we need to find the volume of the cube and add them together.

Volume of the a cube uses the formula s^3 where s is the side length.

V= 3^3

v= 3*3*3

v= 27  

The volume of the cube is 27.

Add 6 and 27 to find the total volume.

6 +27 = 33

8 0
3 years ago
Two angle measures in a scalene triangle are 38° and 25°. What is the measure of the third angle?
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5 0
3 years ago
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4 0
3 years ago
What is the range of the function y= squareroot of x+5?
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Y + 5 = 0
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Therefore, you would choose the first answer.
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