Answer:
Length of the base is 16 yards.
Step-by-step explanation:
We are given that,
Area of the triangle = 80 yd²
Height of the triangle = 10 yards
Since, we know,
Area of a triangle = 
So, we get,
i.e. 
i.e. 
i.e. Base = 16 yards
Thus, the length of the base is 16 yards.
The answer is the last choice
1 hour is 60 minutes. The ratio of 60 minutes to 45 minutes is 4:3 .
Answer:
x=-2
Step-by-step explanation:
11=-4x+3
8=-4x
8/-4=-4x/-4
-2=x
X=number of books that cost 0.60
y=number of books that cost 0.75
x+y=16
0.6x+0.75y=10.95
solve
multiply second equation by 10 for nicity
6x+7.5y=109.5
multiply first equesiotn by -6 and add to second
-6x-6y=-96
<u>6x+7.5y=109.5 +</u>
0x+1.5y=13.5
1.5y=13.5
divide both sides by 1.5
y=9
sub back
x+y=16
x+9=16
minus 6
x=7
seven 0.60 books and nine 0.75 books
