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2 years ago

9

Please help. Algebra.

2 answers:

olga nikolaevna [1]2 years ago

6 0

Answer:

7-D)8 $u^{3} v^{6}$

8-B) $u^{6} v^{9}$

Step-by-step explanation:

Hope this helps! :)

guapka [62]2 years ago

5 0

The first one is d and the second is b!! also i recommend downloading mathpapa it will really help u :D

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Select all that apply there are 3 red marbles, 5 green marbles, and 2 blue marbles in a bag. which of the following are true?

Zielflug [23.3K]

Answer:

3 red marbles

Step-by-step explanation:

4 0

2 years ago

Reflect the polygon, K(-4, 6), L(-2, -2), M(6, -1), N(8, 7); y=-1

Mashutka [201]

Answer:

I think it is 22 but I might be wrong.

Step-by-step explanation:

8 0

2 years ago

The graph of the quadratic function y = ax^2 + bx + c is given.<br> Find a + b + c.

andrey2020 [161]

Answer:

$\frac{145}{24}\approx 6$ ***

Answers may vary depending on the person reading the graph.

It is hard to tell what they think crosses nicely.

For example, I decided that the graph crossed nicely at the following points:

$(0,3)$

$(2,8)$

$(6,5)$

Step-by-step explanation:

I see that the graph crosses at $(0,3)$ , $(2,8)$ , and $(6,5)$ .

The equation $y=ax^2+bx+c$ tells us the $y$ -intercept is $c$ since when $x=0$ we have $y=a(0)^2+b(0)+c=0+0+c=c$ .

The $y$ -intercept for our graph is $3$ . Therefore, $c=3$ .

So far we have the equation:

$y=ax^2+bx+3$ .

Let's enter the other points creating a system of linear equations to solve:

$8=a(2)^2+b(2)+3$

$5=a(6)^2+b(6)+3$

Let's simplify:

$8=4a+2b+3$

$5=36a+6b+3$

Let's subtract 3 on both sides:

$5=4a+2b$

$2=36a+6b$

I choose to solve the system by elimination.

Let's multiply the top equation by -3:

$-15=-12a-6b$

$2=36a+6b$

Now adding the equations results in:

$-13=24a$

Divide both sides by 24:

$\frac{-13}{24}=a$

Now using one of the equations we can find $b$ :

$5=4a+2b$ with $a=\frac{-13}{24}$

$5=4\frac{-13}{24}+2b$

$5=\frac{-13}{6}+2b$

Add 13/6 on both sides:

$5+\frac{13}{6}=2b$

$\frac{30+13}{6}=2b$

$\frac{43}{6}=2b$

Divide both sides by 2:

$\frac{43}{2(6)}=b$

$\frac{43}{12}=b$

So we have the equation:

$y=\frac{-13}{24}x^2+\frac{43}{12}+3$

Let's evaluate $a+b+c$ now:

$\frac{-13}{24}+\frac{43}{12}+3$

$\frac{-13+86+72}{24}$

$\frac{73+72}{24}$

$\frac{145}{24}$

4 0

3 years ago

What is the slope and y intercept of this diagram

Ilia_Sergeevich [38]

The Answer is 1/5 and 5

4 0

2 years ago

Read 2 more answers

Find the image of (−3, 8) after a 270∘ rotation counterclockwise about the origin.

katrin [286]

Answer:

(8, 3)

Step-by-step explanation:

For a 270° rotation, the rule is that (x, y) turns into (y, -x)

In (-3, 8), -3 represents x and 8 represents y.

Our answer is then (y, -x), or (8, 3)

4 0

2 years ago