2 years ago

What does a change in the x value mean when graphing an exponential function?

Mathematics

1 answer:

3241004551 [841]2 years ago

7 0

Answer:

what changes is the exponential function

Step-by-step explanation:

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Inverse f(x)=-5x-30?

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Answer:

- 150

Step-by-step explanation:

5×-30?-----) -150 is the answer

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The double number line below shows the approximate number of kilograms in a certain number of pounds:

kirill [66]

Answer:

4.5

Step-by-step explanation:

We can simplify ratios to one to find the answer

4 pounds is about 2 kilograms

2 pounds is about 1 kilogram

1 pound is about half a kilogram

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The swimming team has competed in 45 races this season. They have won 30 races so far. How many races will the team need to win

tatuchka [14]

Answer:

15 races

Step-by-step explanation:

The team has competed in 45 and has won 30. So the success rate is:

Success rate is:

$Sccess\ rate=r= \frac{30}{45}*100\\ =66.7\ percent$

We have to find the number of races the team needs to win for 75% success rate

Which means that

$r = \frac{30+x}{45+x} = 0.75\\$

We have to solve the equation for x

$\frac{30+x}{45+x}=0.75\\ 30+x = 0.75(45+x)\\30+x=33.75+0.75x\\x-0.75x=33.75-30\\0.25x=3.75\\x=\frac{3.75}{0.25}\\ x=15$

The team needs to win 15 races to get 75% success rate ..

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