3 years ago

Use the substitution method to solve the system of equations. Choose the

Mathematics

1 answer:

Irina-Kira [14]3 years ago

6 0

Step-by-step explanation:

Y=9

Replace y in the equation:x+9=3

X=9-3=6

So it's D(6,9)

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Sean earned $31,000 last year. if the first $25,000 is taxed at 9% and income above is taxed at 15%, how much does sean owe in t

vlada-n [284]

$3150 because 9% of $25000 is $2250 and 15% of $6000 is 900 and 2250+ 900 is 3150

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2 years ago

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Your waiter at a restaurant suggests you leave a tip of $10 on a $50 bill. What percentage is that?

Bezzdna [24]

Answer:

20%

Step-by-step explanation:

To find what percentage is $10 out of $50, we divide 10 by 50:

$\frac{10}{50}=0.2$

If we want to get the result in percentage form, we simply multiply it by 100%:

$0.2\cdot 100\%=20\%$

So a tip of $10 on a $50 bill is a tip of 20%.

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3 years ago

Find the y-intercept of f(x) = x^3 + 3x^2 - X-3<br> HURRY

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Answer:

y-intercepts: (-3,0) , (-1,0) , (1,0)

Step-by-step explanation:

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2 years ago

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3 years ago

1. Identify the vertex and the y-intercept of the graph of the function y=-2(x+ 2)+2.

KATRIN_1 [288]

Answer:

Please let me know if your quadratic is $y=-2(x+2)^2+2$ .

And if so your vertex is (-2,2) and your y-intercept is (0,-6)

Step-by-step explanation:

It says vertex so I'm thinking you meant $y=-2(x+2)^2+2$ . Please correct me if I'm wrong.

The vertex form of a quadratic is $y=a(x-h)^2+k$ . It is called that because it tells you the vertex (h,k).

So if you compare the two forms you should see -h=2 while k=2.

-h=2 implies h=-2.

So the vertex is (h,k)=(-2,2).

To find the y-intercept, set x=0 and find y.

$y=-2(0+2)^2+2$

$y=-2(2)^2+2$

$y=-2(4)+2$

$y=-8+2$

$y=-6$

So the y-intercept is (0,-6).

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3 years ago