Answer:
Remember, the formula is the second value minus the first value, divided by the first value times 100.
9. 50% Increase
10. 33% Decrease
11. 200% Increase
To calculate tip, simply move the decimal place 2 to the right and multiply it by the price. For example, If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip.
12. $23.00
13. $10.50
Answer:
Step-by-step explanation:
Two numbers are relatively prime if they have no factors in common. In other words, if their greatest common divisor is 1.
7 and 42- both divisible by 7
66 and 77- both divisible by 11
90 and 891- both divisible by 9
Answer would be 16 and 39
Answer:
18.55
Step-by-step explanation:
Step One
Find AC
<em><u>Formula</u></em>
a^2 + b^2 = c^2
<em><u>Givens</u></em>
<em><u>Solution</u></em>
- AC^2 = 70^2 + 50^2 Substitute into Pythagoras
- AC^2 = 4900 + 2500 Expand
- AC^2 = 7400 combine
- AC = sqrt(7400) Take the square root of both sides.
- AC = 86.02
Step Two
Find FC
<em><u>Givens</u></em>
- <BCF = 30o Given
- BC = 50 Given
- FC = Find
<em><u>Formula</u></em>
Tan(30) = FC/50
<em><u>Solution</u></em>
FC = 50 * tan(30)
FC = 28.87
Step Three
Find <FAC
FC = 28.87
AC = 86.02
Tan(<FAC) = FC / AC
Tan(<FAC) = 28.87/86.02
Tan(<FAC) = 0.33558
<FAC = Tan-1(0.33558)
<FAC = 18.55 which is just about what you got.
1.75 kg + 1.54 kg = 3.29 kg or 7.253208 pounds.
