Answer:
(x -7)²
x = 7
Step-by-step explanation:
Given the quadratic function (polynomial):
x² - 14x + 49 = 0
The first term (x²) and the last term (49) are both perfect squares and the second term is the sum of the product of these two terms (-7 + -7 = -14):
(x - 7)(x - 7) = (x-7)²
When looking for an estimate, you have to round your numbers 21 rounded would become 20 and 357.9 would become 360. So next you would divide the numbers.
360 ÷ 20 = 18
So, Ellen would have used approximately 18 gallons of gas.
Hope this helps you. :-)
so the ans is of last option.
Hopethiswillhelpu.....
I like to think of these like this.
What was the amount of the discount? 300 - 234 = $66 dollars.
66 is to 300 as ? is to 100?
This is how that question looks in an equation:
66/300 = x/100 Solve for x by cross multipying.
66 x 100 = 300 x
660 = 300 x
x = 22
The discount amount on the tablet is 22% off the regular price.
Check it!
300 x .22 = $66 dollars off. 300 - 234 = $66 off.
Yes! It checks.