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DaniilM [7]
3 years ago
8

The price of a video game at Game Word has increased from $36 to $45 each. What was the percent change?

Mathematics
1 answer:
andriy [413]3 years ago
3 0

Step-by-step explanation:

price difference= $45-$36

=$9

now,

x% of $45=$9

or, x/100 ×45 =9

or, x/20 ×9=9

or, x/20=1

therefore, x= 20%

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antiseptic1488 [7]

After plotting all the three points, we get the parabolic equation in the form is 2(x - 1)²-34.

<h3>What is parabola?</h3>

Any point on a parabola, which has the shape of a U, is situated at an equal distance from the focus, a fixed point, and the directrix, a fixed line.

General equation of the quadratic equation,

Y = ax² + bx +c

Given points,

(-2, 0),

(-1, -10),

(4, 0).

Putting the points in the general equation,

Putting (-2, 0), we get

0 = 4a - 2b + c

Putting (-1, -10), we get

-10 = a - b +c

Putting (4, 0), we get

0 = 16a + 4b +c

Solving all equations we get,

a = 2 , b = -4 , c = -16

After putting the values,

Y = 2x²- 4x- 16

2(x² - 2x - 8)

2(x²- 2x + 1 - 1 - 16)

=2(x - 1)²-34

Hence we get the required equation in the parabolic form.

To know more about parabola, visit :

brainly.com/question/21685473

#SPJ1

5 0
1 year ago
What is the value of y in the equation 2 + y = −3?<br> -1<br> -5<br> 1<br> 5
Thepotemich [5.8K]
To do this subtract 2 from each side of the equation to get y = -5, so the value of y in this is -5. Hope this helps!
7 0
3 years ago
10. Giselle invests $16,250 in an account that earns 4.25% interest, compounded continuously.
denis-greek [22]

Answer: <u>24 years</u>

Step-by-step explanation:

% • total = Answer

4.25% • $40,000 = Answer

.0425 • $40,000 = Answer

Answer = $1,700 per year

40,000 ÷ 1,700 = 23.5

<u>23.5 rounded to the nearest year is 24</u>

3 0
3 years ago
X3 + 2xsquared - x - 2 = (x + 6_)(x + 2_)(x + 4_)
Anon25 [30]
3345 because it’s squared
3 0
3 years ago
What is the output of the function f(x) = x + 21 if the input is 4? When the input is 4, the output of f(x) = x + 21 is
notka56 [123]
To find the output when you know the input, just plug the input into the function.

x+21=4+21=25

The output is 25.

Hope this helps!
8 0
3 years ago
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