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sasho [114]
3 years ago
8

Which step is incorrect when solving the equation 2(x+9)=4(x+7)+2?

Mathematics
1 answer:
iragen [17]3 years ago
8 0

Answer:

3. 2x+18=4x+26

Step-by-step explanation:

2(x+9)=4(x+7)+2

2x+18=4x+28+2

2x+18=4x+<u>3</u><u>0</u>

<em><u>The</u></em><em><u> </u></em><em><u>step</u></em><em><u> </u></em><em><u>that</u></em><em><u> </u></em><em><u>made</u></em><em><u> </u></em><em><u>an</u></em><em><u> </u></em><em><u>error</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>solving</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>linear</u></em><em><u> </u></em><em><u>equation</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>step</u></em><em><u> </u></em><em><u>3</u></em><em><u>.</u></em>

Hope this helps ;) ❤❤❤

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Graph the exponential function.
lara31 [8.8K]

Exponential Function doesn't have a graph that intercepts x-axis only if it is f(x) = a^x (when a>0 and a ≠ 1)

If you want to plot five points to graph the function then. I'd rather do from negative number to positive number.

Substitute from -3≤x≤1 (We get 5 points)

f(-3) = 4^-3

f(-3) = 1/4^3

f(-3) = 1/64 (First point) (-3,1/64)

f(-2) = 4^-2

f(-2) = 1/4^2 = 1/16 (Second point) (-2,1/16)

f(-1)=4^-1 = 1/4 (Third point) (-1, 1/4)

f(0) = 4^0 = 1 (Fourth point) (0, 1)

f(1) = 4^1 = 4 (Fifth point) (1,4)

4 0
3 years ago
Rewrite the following so that y is a function of x 2x + 18y = 36
Reil [10]
Ok so
basically solve for y

2x+18y=36
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8 0
4 years ago
a senator wishes to estimate the proportion of united states voters who favor new road construction. what size sample should be
Nitella [24]

The  size of the sample should be obtained at 2401 in order to be 95% confident

Given that:

Margi of error, ME=0.02

Population proportion, p=0.50

To Find: The size of the sample that should be obtained in order to be 95% confident

Let the size of the sample be n

Using formula,

n=(p*(1-p))*(z(0.05/2)/ME)^{2} \\n=(0.5*(1-0.5))*(1.96/0.02)^{2} \\n=0.25*9604\\n=2401

Therefore, the size of the sample should be obtained at 2401 in order to be 95% confident

Learn more about Population proportion here brainly.com/question/15703406

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2 years ago
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Answer:

3=180

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Step-by-step explanation:

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3 years ago
How would you do this algebra question?
sergey [27]
Add then I would divide it
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3 years ago
Read 2 more answers
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