80% decrease. because 1% of 300 is 3 which you multiply 3*20 and which means 20 percent equals $60 the leftover percent is the decrease
Answer:
3 1/3 hours
Step-by-step explanation:
First we need to find how much she gets paid per hour. We can find this by diving the pay by the hours worked. Let x equal the pay per hour.
90/5=x
We can simplify the fraction by diving both the numerator and denominator by 5
(90/5)(5/5)=x
Do the division
18/1=x
Gianna gets paid 18 dollars per hour.
Now to find how much she needs to work we can divide the money she wants by the pay she gets per hour. Let y be the number of hours she needs to work.
60/18=y
turn into a mixed number
3 1/3=y
She would need to work 3 1/3 hours to make $60
240(.15) = 36
240 - 36 = 204
Lucy has 204 miles left to drive.
If you mean 3 years or 30 months then 3 years would be more since there's 36 months in 3 years. :)
We have a right triangle with legs of 6 and 8. The hypotenuse is unknown so let it be x for now
Plug these three values
a = 6
b = 8
c = x
into the Pythagorean Theorem below. Then solve for x
a^2 + b^2 = c^2
6^2 + 8^2 = x^2
36+64 = x^2
100 = x^2
x^2 = 100
sqrt(x^2) = sqrt(100) ... apply the square root to both sides
x = 10
The final answer is 10 ft. This option isn't listed which makes me think your teacher made a typo somewhere.
