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3 years ago

What does X equal. PLEASE HELP!!!

Mathematics

2 answers:

DIA [1.3K]3 years ago

8 0

Answer: x=5

Step-by-step explanation: First add the two x values to make 13x-11=54, then add 11 to both sides to get 13x=65, finally divide by 13 on both sides to get x = 5.

Hope this helped!

Mark Brainliest if you want!

dexar [7]3 years ago

4 0

Answer:

x= 5

Step-by-step explanation:

13 x =65

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The exponential functions change is represented by decay and the percentage rate of decrease is 1.00619%.

Step-by-step explanation:

Step 1:

To determine if the function represents growth or decay, we substitute values to x.

If the values increase with an increase of x, it represents growth.

If the values decrease with an increase of x, it represents decay.

Step 2:

If $x= 10,$ $y = 1,300 (\frac{1}{2})^{\frac{10}{69} } = 1,300 (0.9044) = 1,175.72.$

If $x=11,$ $y = 1,300 (\frac{1}{2})^{\frac{11}{69} } = 1,300 (0.8953) = 1,163.89.$

So as x increases the value of y decreases, so it represents decay.

Step 3:

The percentage rate of change is determined by dividing the difference of two consecutive values by the first value.

The percentage rate of change $= \frac{y(x=11) - y(x=10)}{y(x=10)}.$

Substituting the values, we get

The percentage rate of change $=\frac{1,175.72-1,163.89}{1,175.72}(100) = 1.00619\%$ .

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3 years ago

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lidiya [134]

You have two equations.
since the second is already isolated, sub in x-4 for every y in equation 1 so that
$x^{2} - 4 [(x-4)^{2}] =16
$
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Veseljchak [2.6K]

Answer:
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