Answer:
-1
Step-by-step explanation:
y-1=-3
y=-2
.:1/2y=1/2(-2)=-1
C=300+1200x-100x. Find x if the total cost is 3,000
3,000 = 300 + 1200x -100x
3000 = 300 + 1100x
2700 = 1100x
2700÷1100=x
x=27/11
x = 2 5/11
Round to 3
Answer:
-2(5x-7)
Step-by-step explanation:
Factor until each factor is linear
Answer:
The expected value of quarters is $47.20
Step-by-step explanation:
18+12+20=50
1230-50=1180
1180÷25=47.2
23. To complete the square you divide the x term by 2 and square it
(6/2)^2 = 9 so we have
(X+3)^2 = 2
then square root both side and get x by itself
x = √2 + 3
x = 4.41 , 1.585
A
24. x^2 - 4x = 1
Factor
X(x - 4) = 1
x = 4.23 and -.24
A
25. x^2 +3x = 4
factor
x(x + 3) = 4
solve
x = -4 or 1
A
26. X^2 +5x = 10
Factor
x(x +5) = 10
solve
x = 1.53 and -6.53
A
