Q- A $420 55' flat screen tv is on sale for 40%, what is the cost of the flat screen tv now?
A-168 the tv now cost $168 dollars
Answer:
(7x + 5)(7x - 6)
Step-by-step explanation:
49x² - 7x - 30
49 is 7 x 7 , 30 is 2 x 3 x 5
49x² - 42x + 35x - 30
7x(7x - 6) + 5(7x - 6)
(7x + 5)(7x - 6)
You haven't told me what the question is. But I put the mouse
to my forehead, closed my eyes, took a deep breath, and I could
see it shimmering in my mind's eye. It was quite fuzzy, but I think
the question is
"What score does Andrew need on the next test
in order to raise his average to 72% ?"
The whole experience drew an incredible amount of energy
out of me, and the mouse is a total wreck. So we'll just go ahead
and answer that one. I hope it's the correct question.
The average score on 4 tests is
(1/4) (the sum of all the scores) .
In order for Andrew to have a 72% average on 4 tests,
the sum of the 4 scores must be
(4) x (72%) = 288% .
Out of that total that he needs, he already has
(64% + 69% + 73%) = 206%
on the first three tests.
So in order to average 72% for all 4 tests,
he'll need to score
(288% - 206%) = 82%
on the fourth one.
Length (L): 4w - 5
width (w): w
Perimeter (P) = 2L + 2w
140 = 2(4w - 5) + 2(w)
140 = 8w - 10 + 2w
140 = 10w - 10
150 = 10w
15 = w
Length (L): 4w - 5 = 4(15) - 5 = 60 - 5 = 55
Answer: width= 15meters, length=55 meters
<span>11-4(0.2)+2
1</span>1-0.8+2
12.2
