Answer:
8 cm
Step-by-step explanation:
Let x cm be the length of the base, then the length of the height is x+7 cm. Use formula for the area of the triangle:
In your case,
Since the base cannot have negative length, then x=8 cm.
20% percent refers to the rate
So to find 20% off of $125 you have to multiply the rate by the original price and then subtract that number from the original price
First you have to make the percent into a decimal. To do that you have to move the decimal point over to the left two times or divide by 100:
20/100= .20
So the equation would be:
.20 • 125= 25
Now you have to subtract from the original number:
125-25=100
So the answer would be that the stereo would cost 100 with the 20% off sale
I would say x=30 y=90
because
(y+x)
90+30=120
(y-x)
90-30=60
the sum of those 2 angles should equal 180 because they are supplementary angle.
120+60=180
and because the angles of 2x and y+x are also supplementary they should equal 180
2x
2(30)
=60
(y+x)
90+30
=120
120+60=180
Answer:
2.759 x 3.901 ft
Step-by-step explanation:
Of the 1000 students surveyed, 48%, or 480, are honor roll students. Of those 480, 45%, or 216, play sports.
Of the remaining 520 non-honor-roll students, 22%, or 114.4 don't play sports. That leaves 405.6 that do.
Thus, of the 1000 students surveyed, 216 +405.6 = 621.6 play sports, for a ratio of 621.6/1000 = 0.6126.
The probability that a randomly chosen student plays sports in school is about 0.6216.