Answer:
122.5
Step-by-step explanation:
Use the area formula for a trapezoid (attached below as an image):
A = area in sq cm
a = top base
b = bottom base
h = height
Correspond the correct values with the variables:
a = 14
b = 21
h = 7
A = 1/2 * (14 + 21) * 7
A = 1/2*(35)*7
A = 17.5 * 7
A = 122.5 sq cm
Hope this helps (●'◡'●)
Answer:
6
Step-by-step explanation:
Given expression:
a varies directly as b;
a ∝ b
So;
a = kb where k is the constant of proportionality;
if a= 7 and b = 2;
7 = 2k
k = 
Now, find b when a = 21
21 = x b
b = 6
Answer:
7 quarts and 1 pint
Step-by-step explanation:
2 pints is equal to a quart
15 pints divided by 2 is 7r1
7 is equal to 7 quarts and r1 is equal to 1 pint.
Let width equal X and length equal X+2. Use algebra 72 = X times X+2
