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andrey2020 [161]
3 years ago
14

Variable y varies directly with variable x, and y = 45 when x = 9.

Mathematics
1 answer:
Alenkasestr [34]3 years ago
4 0
Direct variation means their ratio is a constant
x/y is 9/45=1/5
so when x=2, y=5*2=10
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(5x4 - 4x³ - 2x² + x − 19) − (x4 + 5x³ + 8x² + x + 5) evaluate !!
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Answer:

p(x) = 4x^4-9x^3-10x^2-24

Step-by-step explanation:

I'm going to assume that your equation is (5x^4-4x^3-2x^2+x-19) - (x^4+5x^3+8x^2+x+5)
So to evaluate it we need to simplify it. Find like terms and perform addition/subtraction on them.

p(x) = (5-1)x^4 + (-4-5)x^3+(-2-8)x^2+(1-1)x+(-19-5) \\ \to p(x) = 4x^4-9x^3-10x^2-24

7 0
2 years ago
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4 0
3 years ago
Select the equivalent expression.
denpristay [2]

Answer:

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Explanation:

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\bold{3^{-5}: \ \frac{1}{3^5} }

5 0
3 years ago
What can you say about the Y values are the two functions??? Help please !!!!
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Answer:

D. The minimum y-value of g(x) approaches -3

Step-by-step explanation:

Form a table for values of x with corresponding values for f(x) and g(x)

<u>x   </u>                 <u>f(x)=3x²-3                                         g(x)=2^x -3                           </u>

-3                   =3(-3²)-3=24                                       2⁻³ -3 = -2.88

-2                    =3(-2²)-3=9                                        2⁻² -3 = -2.75

-1                     =3(-1²)-3=0                                         2⁻¹-3 = -2.5

0                      =3(0²)-3= -3                                        2⁰ -3 = -2

1                       =3(1²)-3=0                                           2¹ -3 = -1

2                      =3(2²)-3=9                                          2²- 3 = 1

3                     =3(3²)-3=24                                          2³ -3= 5

From the table above, you can see the minimum value of y in g(x)  -2.88 approaches -3

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