John wants to save $2,250 for a vacation. When he has saved 3 times as much as he has already saved, he will need only $54 more.
1 answer:
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Answer:
6 units
Step-by-step explanation:
Given:
- (2, 3)
- (2, 9)
To find the distance between two points, we need to use the distance formula:
Plug in what you know:
Simplify:
Evaluate the exponents.
Add.
Evaluate the square root.
The distance between the two points is 6 units.
Learn with another example:
Answer:
632
Step-by-step explanation:
So we can define decreasing x% in two ways: we can define 20% off as 80% of the original value, or we can define subtracting 20% from the original value, and both representations are useful.
In this case it's more useful to define 20% as subtracting 20%, from the original value. The reason for this, is because since we're subtracting 20% of the original value, we then know that 126.40 is 20% the original value.
So to find x% of some value, you generally use the following equation: where A=original amount, and x is the percent. This equation is simply converting the x% to a decimal value. Since 126.40 is 20%, we can derive the following equation.
We can solve for A, by dividing by 0.20
It's also important to note, you didn't really have to set up this entire equation, since you know that the 126.40 is 20%, you simply could've multiplied by 5, since 20% is really just 1/5 of the entire value, so get the entire value, or original value you multiply by 5
Answer:
Step-by-step explanation:
Using the rule of exponents
×
⇔
thus
×
=
=