1. We assume, that the number 45 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 45 is 100%, so we can write it down as 45=100%.
4. We know, that x is 80% of the output value, so we can write it down as x=80%.
5. Now we have two simple equations:
1) 45=100%
2) x=80%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
45/x=100%/80%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for what is 80% of 45
45/x=100/80
(45/x)*x=(100/80)*x - we multiply both sides of the equation by x
45=1.25*x - we divide both sides of the equation by (1.25) to get x
45/1.25=x
36=x
x=36
now we have:
80% of 45=36
I HOPE THIS HELPS
Answer:
10i
Step-by-step explanation:
√-100 = √-1 × √100 = i × 10 = 10i
I don't understand why there are two boxes though.
Answer:
<h2>Infinite; no slope</h2>
Step-by-step explanation:
Because both points have -1 as X they are both located on the same line
This gives them no slope
Answer:
30 and 18
Step-by-step explanation:
The equations representing a "sum and difference" problem are easily solved using elimination or substitution.
<h3>Setup</h3>
Let 'a' and 'b' represent the two numbers.
a + b = 48 . . . . . the sum
a - b = 12 . . . . . . the difference
<h3>Solution</h3>
Add the two equations to eliminate 'b'.
2a = 60
a = 30 . . . . . . . divide by 2
b = 30 -12 = 18
The two numbers are 30 and 18.
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<em>Additional comment</em>
You may have noticed that the larger of the two numbers is half the sum of the given numbers: a = (48+12)/2 = 30. Similarly, the smaller of the two numbers is half their difference: (48-12)/2 = 18.
This is the generic solution to a "sum and difference" problem, meaning you can often work it mentally and just write down the answer.
8.525 rounded to the nearest tenth is 8.5