Answer:
Zero real roots:
f(x) = x^2-x+1
f(x) = x^2+2x+3
One real root:
Two real roots:
f(x)=x^2+2x+1
f(x)=x^2-3x+2
Step-by-step explanation:
These were determined by using the quadratic formula.
B.
For all 3 to work together, they can paint 1 room per hour.
C.
John can paint a room at 1/4 of a room per hour.
Rick can paint a room at 1/5 of a room per hour.
Together they can paint a room at a rate of 9/20 of rooms per hour.
D.
1 = 1/4j + 1/5r + 11/20m (john, rick, molli)
E.
The least common denominator is 20
F.
1 = 1/4(0) + 1/5(0) + 11/20x
1 = 0 + 0 + 11/20x
1 = 11/20x
x = 1/(11/20)
x = 1 9/11
It will take Molli 1 hour and 49 minutes (60 x 9/11) to paint the room alone.
Answer:
A. $307,172.72
Step-by-step explanation:
Inez has to pay 4 percent in closing costs and 16 percent for the down payment on a purchase of $225,500 with an ARM.
4% + 16% = 20%
lnez has to pay 20% of $225,500
= 225,500*20/100
= 225,500*0.2
= $45100
lnez has to pay $45100.
Over the life of the loan, lnez will pay $262,072.72
Now we have to add down payment, closing cost and the payment over the life of the loan.
$45100 + $262,072.72
= $307,172.72
Answer: A. $307,172.72
Thank you.
Answer:
m=-3
Step-by-step explanation:
Since the lines are parallel to each other, their gradients are equal.
∴ gradient of green line = gradient of red line
∴ m = -3
R - 18 = 50
r = 50 + 18 = 68
Hence Rick is 68 yrs old
