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Likurg_2 [28]
3 years ago
7

-If f(x) = 4x - 6 and g(x) = 2x, find Ax) g(x).

Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:

Step-by-step explanation:

2x(4x -6)

8x^2 - 12x

the answer is c

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To get the answer of 7,280 all i can figure out is to multiply (X) 364 x 20 = 7,280 and that gives you the answer you show of 7,280.
6 0
3 years ago
A soccer ball is kicked from 3 feet above the ground. the height,h, in feet of the ball after t seconds is given by the function
dexar [7]
Here's our equation.

h=-16t+64t+3

We want to find out when it returns to ground level (h = 0)

To find this out, we can plug in 0 and solve for t.

0 = -16t+64t+3 \\ 16t-64t-3=0 \\ use\ the\ quadratic\ formula\ \frac{-b\±\sqrt{b^2-4ac}}{2a}  \\ \frac{-(-64)\±\sqrt{(-64)^2-4(16)(-3)}}{2*16}  = \frac{64\±\sqrt{4096+192}}{32}

= \frac{64\±\sqrt{4288}}{32} = \frac{64\±8\sqrt{67}}{32} = \frac{8\±\sqrt{67}}{4} = \boxed{\frac{8+\sqrt{67}}{4}\ or\ 2-\frac{\sqrt{67}}{4}}

So the ball will return to the ground at the positive value of \boxed{\frac{8+\sqrt{67}}{4}} seconds.

What about the vertex? Simple! Since all parabolas are symmetrical, we can just take the average between our two answers from above to find t at the vertex and then plug it in to find h!

\frac{1}2(\frac{8+\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(2+\frac{\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(4) = 2

h=-16t^2+64t+3 \\ h=-16(2)^2+64(2)+3 \\ \boxed{h=67}


8 0
3 years ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. x2 – 6 = x
mezya [45]

Answer:

3, -2

Step-by-step explanation:

8 0
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5 0
3 years ago
5y(2x-1)=y(x+2)+20, x=3​
Shkiper50 [21]

Answer:

y=1

Step-by-step explanation:

5y(2x-1)=y(x+2)+20, x=3

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3 years ago
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