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daser333 [38]
3 years ago
5

Valencia is solving this number riddle using guess and check. What number multiplied by eight is equal to forty? Valencia must f

ind . To use guess and check, Valencia can different numbers by . multiplied by eight is equal to forty.
Mathematics
2 answers:
Klio2033 [76]3 years ago
4 0

Answer:

first one is A second on is C third is B fourth is B HOPE THIS HELPS

Leviafan [203]3 years ago
3 0

Answer:

1. A

2.C

3.B

4.B

Step-by-step explanation:toke test

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Solve y+4x=12 3y=8-12x
attashe74 [19]
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Solve the systems by elimination: <br><br> 8x-2y= -10<br> -4x+y= 5
Pachacha [2.7K]

Let's eliminate x.  To achieve this, mult. the 2nd equation by 2, obtaining

-8x + 2y = 10.  Now add this result to the first equation:

8x-2y= -10

-8x + 2y = 10

---------------------

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The two equations actually represent the same line.   Without an x- or a y-value, we cannot solve for the value of the other variable.  There are infinitely many solutions.

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4 0
3 years ago
Graph the functions and approximate an x-value in which the exponential function exceeds the polynomial function. y = 4x y = 7x2
nordsb [41]

Answer:

The Exponential function is

y=4^x

And the polynomial function is

y=7 x^2 +4 x -2

And, we have to find the value of x for which, exponential function exceeds the polynomial function which can be written as

4^x> 7 x^2 +4 x -2

1. When , x= -1

LHS

4^{-1}=\frac{1}{4}=0.25

RHS

=7*(-1)^2 +4 *(-1)-2\\\\=7-4-2=1

2. When , x=0

L HS

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RHS

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3. When ,x= 0.5

L HS

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RHS

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4. When , x=2

LHS

 4^{2}=16

RHS

=7*4^2+4*4-2\\\\=112+16-2\\\\=126

The Minimum value for which  exponential function exceeds the polynomial function is , x= 0.5

But,there is other value for which  exponential function exceeds the polynomial function is , x=2.

5 0
2 years ago
What is the value of (fog) (-5)
DochEvi [55]

f(x)=2x+1,\ g(x)=x^2\\\\(f\circ g)(x)=2(x^2)+1=2x^2+1\\\\(f\circ g)(-5)=2(-5)^2+1=2(25)+1=50+1=51

6 0
3 years ago
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