Again, a spreadsheet or suitable calculator makes this short work.
The sum is 184.
_____
The terms being summed are ...
2·3² +3 = 2·9 +3 = 18 +3 = 21
2·4² +3 = 35
2·5² +3 = 53
2·6² +3 = 75
Their total is
21 +35 +53 +75 = 184
The oposite angles must be equal and adjacent angles must be supplementary
so
D=B and A=C
and
A+D=180=A+B=B+C=C+D
so ifD=42, then
A+D=180
A+42=180
minus 42 both sides
A=138=C
angle C has to be 138 degrees
0 < 2/15 < 1/2 < 2
Each number is decimal form:
0 = 0.00
2/15 = 0.13(repeating 3)
1/2 = 0.50
2 = 2.00
How far from each number closet to 2/15:
0.13 - 0 = 0.13
0.50 - 0.13 = 0.37
2/15 is closer to 0.
Answer:
3
Step-by-step explanation:
The x value is the same for both. So it's easy. Distance between -1 and -4 is 3
First we can figure out an hourly rate at which cars are washed. To do so, we need to divide 5 cars by 3 hours.
Then we need to multiply 7.5 hours by the rate. This will tell us how many cars are washed in 7.5 hours.
= 12.5 cars
