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3 years ago

Answer if you have discord please i need some friends

Mathematics

2 answers:

tatuchka [14]3 years ago

7 0

Answer:where do you go to school

kirill115 [55]3 years ago

3 0

Answer:

its_tayyy#2357

Step-by-step explanation:

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The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?

VARVARA [1.3K]

Answer:

$\displaystyle - 155$

Step-by-step explanation:

we are given a quadratic function

$\displaystyle f(x) = - 5 {x}^{2} + 30x - 200$

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

$\displaystyle x _{ \rm min} = \frac{ - b}{2a}$

the given function is in the standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

so we acquire:

b=30
a=-5

thus substitute:

$\displaystyle x _{ \rm min} = \frac{ - 30}{2. - 5}$

simplify multiplication:

$\displaystyle x _{ \rm min} = \frac{ - 30}{ - 10}$

simply division:

$\displaystyle x _{ \rm min} = 3$

plug in the value of minimum x to the given function:

$\displaystyle f (3)= - 5 {(3)}^{2} + 30.3 - 200$

simplify square:

$\displaystyle f (3)= - 5 {(9)}^{} + 30.3 - 200$

simplify multiplication:

$\displaystyle f (3)= - 45 + 90- 200$

simplify:

$\displaystyle f (3)= - 155$

hence,

the minimum value of the function is -155

5 0

3 years ago

Find the volume! Please help

vaieri [72.5K]

Answer:

900 in3

Step-by-step explanation:

When you multiply each of the dimensions you get 900 and since you are measuring volume, which has three dimensions, you would add "in3" at the end.

8 0

3 years ago

How many minutes have passed between the time shown on the first clock and the time shown on the second clock

Anestetic [448]

If you could show a picture of the clocks I could help you

3 0

3 years ago

Read 2 more answers

Help me please! I'd really appreciate it

Svetllana [295]

The ratio of the sides are the same. So 6/24=x/56. This leads to x being 14.

4 0

3 years ago

What is the reference angle for -144 degrees

Alexandra [31]

To find the reference angle for 144 you subtract 144 from 180 and that how you get your answer
180-144= 36*

6 0

3 years ago