It's not a perfect square trinomial because it doesn't factor into one.
The square root of c-term 64 = 8
then the b-term coefficient would need to be -16 not -8.
x^2 - 16x + 64 = (x - 8)^2
you can also see this by calculating vertex. perfect squares have one solution which means the vertex of a perfect square trinomial is on the x-axis.
Answer:
D
Step-by-step explanation:
I would use a tens chart because both numbers are multiples of 10, and there both under 100, so it would work out better if u use a tens chart, since the numbers are in the tens place and would give u a product of 10.
i hope this helps u <span />
<em><u>5</u></em><em><u>0</u></em><em><u> </u></em><em><u>per</u></em><em><u> </u></em><em><u>cent</u></em><em><u> </u></em><em><u>can</u></em><em><u> </u></em><em><u>also</u></em><em><u> </u></em><em><u>be</u></em><em><u> </u></em><em><u>termed</u></em><em><u> </u></em><em><u>as</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>half</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>number</u></em><em><u>.</u></em>
<em><u>therefore</u></em><em><u> </u></em><em><u>3</u></em><em><u>0</u></em><em><u>0</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>½</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>original</u></em><em><u> </u></em><em><u>number</u></em>
<em><u>3</u></em><em><u>0</u></em><em><u>0</u></em><em><u> </u></em><em><u>multiplied</u></em><em><u> </u></em><em><u>by</u></em><em><u> </u></em><em><u>2</u></em>
<em><u>answer</u></em><em><u>=</u></em><em><u> </u></em><em><u>6</u></em><em><u>0</u></em><em><u>0</u></em>
Answer:
40%
Step-by-step explanation:
Original price = x
Sale = 20% off
20% / 100 = 0.2 to convert from a percent to a decimal
Sale = x - 20% of x = x - 0.2x = 0.8x
Sale price = y = 0.8x
Reduction of sale prices = 25% = 0.25
Reduction = y - 25% of y = y - 0.25y = 0.75y
End price in terms of original price (x):
0.75y = 0.75(0.8)x
= 0.6x
End price = 0.6 or 60% of original price, coming out to a 100-60 = 40% overall percentage reduction