Answer: Answer: 170.80 (rounded)
Step-by-step explanation:
Because if you use you Pythagorean Theroum then you should be good on that
Answer:
7 nickels and 17 pennies
Step-by-step explanation:
7 nickels will give you an answer of 35 and if you subtract 35 from 52 that leaves you with 17. 17 is the number of pennies since it is the remainder and each penny is one cent each
Let the width = x
The length would be 4x-27
Area = length x width
2790 = (4x-27) * x
Expand:
2790 = 4x^2 - 27x
Subtract 2790 from both sides:
4x^2 - 27x - 2790 = 0
Use the quadratic formula to solve for the positive value of x:
X = -(-27) + sqrt(-27^2 -4*4(-2790)) /(2*4)
X = 30
Now replace x with 30 in the lengths:
Width = x = 30 inches
Length = 4x -27 = 4(30) -27 = 120-27 = 93 inches
<span>30 + 1.8x = 264
x = 130
First, the expression.
"Marni raised $30 plus $1.80 per minute" that gives us
30 + 1.8x = ?
"She raised a total of $264", which gives us
30 + 1.8x = 264
And that expression is the 1st answer. Now solve for x
30 + 1.8x = 264
1.8x = 264 - 30 = 234
x = 130
So Marni danced for 130 minutes.</span>