Answer:
The answer would be 
.
Step-by-step explanation:
Answer:
$315
Step-by-step explanation:
You are going to want to use the simple interest formula for this. The one below is modified for solving the interest earned.
<em>I = interest amount</em>
<em>P = principal amount</em>
<em>r = interest rate (decimal form)</em>
<em>t = time</em>
<em />
Now we can plug in the values into the equation:
This means that Rachel earned $315 worth of interest in the 15 year period.
8 + 0 = 8: identity- addition (any number + 0= that number)
<span>a(b + c) = ab + ac: distributive (multiplying a on the left-hand side of the equation by the numbers in parenthesis gives you the right-hand side of the equation) </span>
<span>b + a = a + b: commutative- addition (numbers can be added in any order and still produce the same answer) </span>
<span>If 2 = x, then x = 2: symmetric (if a = b then b = a) </span>
<span>x(10) to be written 10x: commutative- multiplication (numbers can be multiplied in any order and still produce the same result)</span>
Answer:
- area: 240 ft^2
- bases: 20 ft, 10 ft
- height: 16 ft
Step-by-step explanation:
Apparently, 4/5 of a gallon is used, so covers ...
(4/5)(300 ft^2) = 240 ft^2
The area of the trapezoid is 240 square feet.
__
The short base of the trapezoid is half the length of the longer base, so is ...
(1/2)(20 ft) = 10 ft
The lengths of the bases are 20 ft and 10 ft.
__
The area formula for the trapezoid is ...
A = (1/2)(b1 +b2)h
Filling in the numbers we know, we can find h.
240 = (1/2)(20 +10)h
240 = 15h . . . . . simplify
16 = h . . . . . . . . . divide by 15
The height of the trapezoid is 16 feet.
