The easiest thing to do to solve all of these is to use the quadratic equation.

The first number (the one attached to x^2) is equal to a. The second number (the one attached to x) is b. The final number (the one with nothing attached) is c.
Wish I could help. :( But I'm not sure.
Answer:
y=-x+4
Step-by-step explanation:
3-5/1-(-1) = -1
(y-(-1)) = -1(x-5)
y+1 = -x+5
y= -x +5-1
y= -x + 4
Answer:
1)
(a) 19 44
(b) 3.96 m
2.01 x 90%= 1.95
1.95 + 2.01
(c)
i] 6
2 events *3 medals per event
ii] 60
simple ratio
iii] 20 including marathon run and high jump events
2)
(a) 8.5 cm
closest round off figure
(b) 4/3πr²
4/3 x π x (8.5)²
303 cm³
Answer:
$96
Step-by-step explanation:
120 x .20 = 24
120 -24 =$96