Answer:
1. 80%
2. $44
3. 58.25
Step-by-step explanation:
If a book is 20% off then it will still have 80% that you have to pay for because the highest possible percentage is 100% and 100-20 is 80.
Percents can also be represented as decimals.
20% -> .20 80%->.80
There are two ways you can solve the next question.
55 - 55(.20) = 44
55(.80) = 44
If $46.60 is the sales price then it is .80 of the original price.
This can be written as an algebraic formula.
Let x be the unknown total price.
.80*x = 46.60
x = 46.60 ÷ (.80) = 58.25
You could also realize that .80=80/100=4/5. So divide 46.60 by 4 and multiply that by 5.
46.60÷4=11.65
11.65*5=58.25
100% of 120 = 120
50% of 120 = 60
350% of 120 = 120 + 120 + 120 + 60 = 420
There were 420 shoppers after the special.
Answer:
Yes
Step-by-step explanation:
A triangle is a "right" triangle if its lengths fullfil the Pythagorean theorem:
Here, a and b are the shorter "legs" of the triangle, adjacent to its right angle, while c is the "hypotenuse," the longest side and the one opposite the right angle.
If we call the 1.9 cm and 2.7 cm our legs, the sum of their squares is:
cm
While squaring our hypotenuse gives us
cm
The fact that we measured the triangle's side lengths to 1 decimal point of accuracy means that there's a little margin of error baked into the measurement. The two previous calculations are within 0.01 cm of each other, which is more than close enough, so we can say that <em>yes, this could be a right triangle</em>.
Answer:
C) 50 square units
Step-by-step explanation:
from (-4,-1) to (6,-1) is 10
from (-4,-1) to (-4,4) is 5
10x5=50