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enyata [817]
3 years ago
8

F(x) = 7 - 5x + 7x2 find f(-9)

Mathematics
2 answers:
Law Incorporation [45]3 years ago
7 0

Answer:

Step-by-step explanation:

F(x) = 7 - 5x + 7x²

f(-9) = 7 - 5*(-9) + 7*(-9)²

       = 7 + 45 + 7*81

      = 7 + 45 + 567

      = 619

blondinia [14]3 years ago
4 0

Answer:

f(-9) = 619

Step-by-step explanation:

To solve for f(-9), plug -9 in for x in the equation of f(x). In other words, change all x's into -9 in the equation 7 - 5x + 7x² and then solve.

f(x) = 7 - 5x + 7x²

Plug in -9 for x.

f(-9) = 7 - 5(-9) + 7(-9)²

Simplify. 5(-9) = -45,   7(-9)² = 7(81) = 567

f(-9) = 7 + 45 + 567

Solve.

f(-9) = 619

The answer is 619.

I hope this helps. If you need clarifications of anything, feel free to ask. Happy studying. :)

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It takes levar four hours to drive 252 miles what is levar unit rate at this rate how far will Levar Drive in seven hours
otez555 [7]
In four hours, he drives: = 252

So, Unit rate = 252/4 = 63 mph

In seven hours, it would be = 63 * 7 = 441 miles

Hope this helps!
5 0
3 years ago
The 6th term is 22 and the common difference is 6 what is the fiftieth term?
SOVA2 [1]

Answer:

the fiftieth term is 76

Step-by-step explanation:

first subtract 15 by 6

15-6= 9

22+ 6 (9)

6 x 9= 54

22 + 54= 76

Answer: 76

6 0
2 years ago
2z^4-10z^3+4z^2 factorable?
charle [14.2K]
Yes
factor out the 2z^2 in each term
(2z^2)(z^2-5z+4)
factor some more
z^2-5z+4
find what 2 numbers multiply to get 4 and add to get -5
the numbers are -1 and -4
(z-1)(z-4)

the factored form is
(2z^2)(z-1)(z-4)
8 0
3 years ago
Which of the following describes the image of a triangle after a dilation that has a scale factor of 5/6
Sergeeva-Olga [200]

Answer:

See example below.

Step-by-step explanation:

The image of a triangle will be 5/6 the size. It will be slightly smaller than the original. For example, if the side measurement of the triangle on one side is 12 then the image of the triangle after a dilation will be 12*5/6 = 60/6 = 10.

The new side length is 10 slightly smaller than 12.

6 0
3 years ago
A theater has 43 seats in the first row. There are 49 seats in the second row, 61 seats in the third row, and 79 seats in the fo
mihalych1998 [28]
43 to 49 is 6
49 to 61 is 12
61 to 79 is 18
add 6 to each
79=4th row
79+18+6=79+24=103
103+24+6=103+30=133
133+30+6=133+36=169

7th row=169 seats


5 0
4 years ago
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