All categories

3 years ago

F(x)=-2x^2+x-5 find f(5)

Mathematics

1 answer:

julsineya [31]3 years ago

6 0

f(5) = -50

Hope it helps you...

You might be interested in

What is 7(f+3)+9=5(f-2)-3f

muminat

Answer:

f = -8

Step-by-step explanation:

7(f+3)+9=5(f-2)-3f

7f + 21 + 9 = 5f - 10 - 3f

7f + 30 = 2f - 10

5f = -40

f = -8

8 0

4 years ago

Simplify 1/4-7i to get a complex number in standard a + bi form.

Romashka [77]

Answer:

$\frac{1}{4-7i}=\frac{4}{65}+\frac{7}{65}i$

Step-by-step explanation:

we are given

$\frac{1}{4-7i}$

Firstly, we will get rid of imaginary term from denominator

so, we will multiply conjugate to both top and bottom term

$\frac{1}{4-7i}=\frac{1\times (4+7i)}{(4-7i)\times (4+7i)}$

$\frac{1}{4-7i}=\frac{4+7i}{4^2-(7i)^2}$

$\frac{1}{4-7i}=\frac{4+7i}{16+49}$

$\frac{1}{4-7i}=\frac{4+7i}{65}$

we can also write as

so, we get

$\frac{1}{4-7i}=\frac{4}{65}+\frac{7}{65}i$

7 0

3 years ago

Which expression has the same value as the one below ?<br><br> 50 + (-17)

irina [24]

Answer:

=33

Step-by-step explanation:

8 0

3 years ago

Rocko has been learning about functions in math class and realizes he can use it to help him get prepared for his next wrestling

Fittoniya [83]

F(x) = -2.5x + 135...where x is the number of weeks, and f(x) = total weight

4 0

3 years ago

An assembly line worker at rob bicycle factory adds a seat to a bicycle at a rate of 2 seats every 12 minutes write and solve a

Arturiano [62]

Answer:

6N = T

They will take 96 minutes to add 16 seats.

Step-by-step explanation:

In the factory, the workers add bicycle seats at a rate of 2 seats every 12 minutes.

If the number of seats they add is N and the number of minutes it takes is T, then they are proportional i.e. N ∝ T.

⇒ N = kT ........... (1)

Now, N = 2 for T = 12 minutes.

So, from equation (1), 2 = 12k

⇒ $k = \frac{1}{6}$

Therefore, the equation (1) becomes $N = \frac{1}{6}T$

⇒ 6N = T ......... (2)

Now, for N = 16, from equation (2) we get,

T = 16 × 6 = 96 minutes.

Therefore, they will take 96 minutes to add 16 seats. (Answer)

5 0

3 years ago