Answer:
x=-4, 3.
Step-by-step explanation:
x/(x+3)=4/(x+5)
cross product
4(x+3)=x(x+5)
4x+12=x^2+5x
x^2+5x-4x-12=0
x^2+x-12=0
factor out the trinomial,
(x+4)(x-3)=0
zero property,
x+4=0, x-3=0,
x=0-4=-4
x=0+3=3
Y=-2 is a horizonal line and will make a 90° intersection with a vertical line. The vertical line perpendicular at that point has the equation x=4
Answer:
20 / x = 10
20 / 2 = 10
Step-by-step explanation:
quotient is the result obtained by dividing
Answer:
Nina will finish first.
Step-by-step explanation:
Let's c<u>alculate how many pages each person reads in one day</u>:
- Jayson ⇒ 48 pages / 3 days = 16 pages/day
- Marcus ⇒ 50 pages / 4 days = 12.5 pages/day
- Nina ⇒ 120 pages / 5 days = 24 pages/day
Then we <u>divide the number of pages of each book by reading speed of the respective person</u>:
- Jayson ⇒ 480 pages ÷ 16 pages/day = 30 days
- Marcus ⇒ 400 pages ÷ 12.5 pages/day = 32 days
- Nina ⇒ 600 pages ÷ 24 pages/day = 25 days
Thus Nina will take the shortest time finishing her book.
