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2 years ago

if your know two points on a line, how can you find the rate of change of the variables being graphed

Mathematics

1 answer:

Vanyuwa [196]2 years ago

3 0

you are solving for slope so what you would do is y1-y1/(x1-x2)=m

m being the slope or rate of change and you assign each point to be your "1" and "2"

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Ellen has 25 hair clips. 7 of them were blue and the rest are purple. What percentage is blue and what percentage is purple?

galina1969 [7]

Answer:

тнє ρє¢єитαgє σf вℓυє ιѕ:28%

тнє ρєя¢єитαgє σf ρυяρℓє ιѕ:72%

Step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт!!!!!!

7 0

2 years ago

Need help with this problem.

tigry1 [53]

Answer:

C) $-\frac{47}{49}$

Step-by-step explanation:

By the cos double angle formula, we know $\cos(2\theta)=2\cos^2\theta-1.$ Substituting $\cos \theta$ into the formula, we get

$\cos(2\theta)=2(-\frac{1}{7})^2-1\\~~~~~~~~~~=\frac{2}{49}-1\\~~~~~~~~~~=\boxed{-\frac{47}{49}}$ .

The answer is C.

5 0

2 years ago

Nathan hit 19 homeruns. He scored 3 fewer homeruns than twice the number of homeruns hit by jason. Write and solve an equation t

Vinvika [58]

Jason hit 11 homeruns.

Step-by-step explanation:

Homeruns hit by Nathan = 19

Let,

Homeruns hit by Nathan = x

Homerun hit by Jason = y

According to given statement;

x = 2y - 3 Eqn 1

We know that Nathan hit 19 homeruns, therefore, putting x=19 in Eqn 1

$19=2y-3\\19+3=2y\\22=2y\\2y=22$

Dividing both sides by 2;

$\frac{2y}{2}=\frac{22}{2}\\y=11$

Jason hit 11 homeruns.

Keywords: linear equations, addition

Learn more about linear equations at:

#LearnwithBrainly

7 0

2 years ago

Using the quadratic formula to solve 4x^2-3x+9x=2x+1, what are the values for x

Musya8 [376]

Answer:

This may be a bit confusing but the answer is, x= -1/2 + 1/2 √2 or x= -1/2 + -1/2 √2 I Hope This Helps You!!!! sorry if it doesn't!

4 0

3 years ago

Read 2 more answers

How many 1/10's are in 2/5?

goblinko [34]

There is 4 1/10's in 2/5.

You do this by turning 2/5 into a fraction with a denominator of 10, so it will be 4/10. 1/10 + 1/10 + 1/10 + 1/10 = 4/10

3 0

3 years ago