A solution to a division problem means it is the quotient. And it tells us the solution to the dividend and divisor.
A = l x w
so you know that the length is 3m longer than the width, so you could use a formula to represent that
w = l + 3
you then substitute the second equation into the first to solve for l
70 = l x (l +3)
70 = l^2 + 3l
you could then rearrange the formula and solve for l using the quadratic formula
0 = l^2 + 3l - 70
l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2
then you solve for the two seperate roots
l = -3 + 17 /2
l = 14 / 2
l = 7
or
l = -3 - 17 / 2
l = -20 / 2
l = -10
since a length cannot be negative, this root is not viable. therefore l = 7
to solve for w you would use
w = l + 3
w = 7 + 3
w = 10
hope this helps! if you did not understand a step or concept please let me know!
The shape of this graph is
89760÷5280=17 is how much feet is in a mile
Answer:
3.35
Step-by-step explanation:
Take the total cost and subtract off the cost of the tax
We need to determine the tax
71.02 = original cost + original cos* tax rate
71.02 = original cost + original cost* .06
71.02 = original cost (1+ .06)
71.02 = original cost (1.06)
Divide each side by 1.06
71.06/1.06 = original cost before tax
67 = original cost before tax
Now to find the cost of each light bulb
Divide by the number of light bulbs
67/20=3.35
