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ira [324]
4 years ago
12

For the function f(x)=5x^2-7x, what is f(-3)? *

Mathematics
2 answers:
-Dominant- [34]4 years ago
8 0

Answer:

The answer to your question is   f(-3) = 66

Step-by-step explanation:

Data

Function             f(x) = 5x² - 7x

Process

To find f(x), just substitute the -3 in all the x's of the original equation and simplify.

-Substitution

                          f(-3) = 5(-3)² - 7(-3)

-Simplify

                          f(-3) = 5(9) + 21

                          f(-3) = 45 + 21

-Result

                          f(-3) = 66

blsea [12.9K]4 years ago
6 0

f(-3) = 66

Step-by-step explanation:

5(-3)^2-7(-3)

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Please help... I really need this.
valentinak56 [21]

Answer:

\frac{4x^3-3x^2+5x+6}{x+6}=4x^2-27x+167-\frac{996}{x+6}

Step-by-step explanation:

The division problem given to us is (4x^3-3x^2+5x+6)\div (x+6).

To perform the synthetic division, we write out the coefficient of the polynomial. We set the linear factor to zero and solve for x, this becomes our divisor. That is x+6=0\implies x=-6.

We carry out the synthetic division as shown in the attachment.

The result of the synthetic division is 4   -27   167   -996

The first three terms are the coefficients of the quotient and the last term is the remainder.

Therefore the quotient is q(x)=4x^2-27x+167 and the remainder is r(x)=-996.

The dividend, the quotient and the divisor are written as

\frac{4x^3-3x^2+5x+6}{x+6}=4x^2-27x+167-\frac{996}{x+6}

The correct answer is A

3 0
3 years ago
1/3x² + x+5/3x² = 1/9<br><br>HAHAHAHA......​
mr_godi [17]

Answer:

Now, 3x 2+x+5⩾0

This is because b² −4ac=1−4×5×3

=−59 (roots are imaginary)

3x²+x+5=(x−3)² =x²+9−6x and x−3⩾0

2x²+7x−4=0

2x²+8x−x−4=0

2x(x+4)−1(x+4)=0

(2x−1)(x+4)=0

x= 1/2 and−4 but x≥3

∴ No solution.

lol hehehe

7 0
3 years ago
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I need help with this please guys it’s due today
mojhsa [17]
The answer is

4,1


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8 0
3 years ago
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Bryan earns 9$ for each hour of yard work how many hours in all will it take Bryan to earn 27$
Svetllana [295]

Answer:

3 hours

Step-by-step explanation:

7 0
3 years ago
I WILL GIVE BRAINLIEST TO WHO EVER TELLS ME THIS ANSWER ASAP
blondinia [14]

it is not because prime factorization is a number broken down by its prime factors

4 x 3 x 20 x 8 x 22 = 42240

the correct prime factorization of 42240 is  2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 11


can i have brainliest

4 0
3 years ago
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