Ask question

Ask question

All categories

3 years ago

15

I’m on my post quiz please help!!

1 answer:

grin007 [14]3 years ago

3 0

-5 + -7/8 because the whole thing is supposed to be negative, and if you add any kind of positive it will no longer be -5 7/8

You might be interested in

Find the solution of this system of equation 8x-4y=-32 -3x 4y=42

Art [367]

What are the answers?

3 0

3 years ago

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

$4a+a=6+4$

$\Rightarrow 5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

7 0

3 years ago

How do i find out a

drek231 [11]

Answer:

it must be

$\frac{c}{8\pi \: b}$

7 0

3 years ago

Please help me please will give brainliest to anyone who is good

hichkok12 [17]

Answer:

C

Step-by-step explanation:

N = st

Number of toothpicks = (number of students) x (toothpicks)

5 0

3 years ago

Read 2 more answers

Which formulas maybe used to find the area of a non right triangle?

Anestetic [448]

Traditional 1/2 * base * height
Heron’s formula (it’s quite lengthy so search it up)
Hope this helped you :)

4 0

3 years ago