Percent sales tax: 7% price before tax: $250 price with tax:
2 answers:
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Xy=11
x+y=-26
x+y=-26
minus x both sides
y=-26-x
sub for y
x(-26-x)=11
-26x-x^2=11
add 26x+x^2 both sides
x^2+26x+11=0
ax^2+bx+c=0
x=
a=1
b=26
c=11
x=
x=
x=
x=
x=
x=
or 
aprox
x=-0.420195 or -25.5698
those are the numbers
x+y=-26
x+y=-26
minus x both sides
y=-26-x
sub for y
x(-26-x)=11
-26x-x^2=11
add 26x+x^2 both sides
x^2+26x+11=0
ax^2+bx+c=0
x=
a=1
b=26
c=11
x=
x=
x=
x=
x=
x=
aprox
x=-0.420195 or -25.5698
those are the numbers
Answer:
Allen go to bed at <u>9:15 p.m</u>.
Step-by-step explanation:
Given:
Allen started his homework at 8:10 p.M. And worked for 45 minutes. Then he phoned a friend and talked for 20 minutes. He went to bed when he finished the call.
Now, to find the time Allen go to bed.
Allen started his homework at 8:10 p.m.
And worked for 45 minutes.
So, to get the time when he finished homework is by adding 45 minutes and the time when he started homework:
Thus, he finished his homework at 8:55 p.m.
Then he phoned a friend and talked for 20 minutes and went to bed when he finished the call.
<em>As, 1 hour = 60 minutes.</em>
Now, to get the time when he go to bed by adding 20 minutes and the time when he finished homework:
Therefore, Allen go to bed at 9:15 p.m.