Plug y=-4x+5 into a website called desmos, it will give you a graph! The y-intercept is 5 and it’s at a slope of 4/1
Answer:
x ≈ 20.42, y ≈ 11.71
Step-by-step explanation:
Using the cosine ratio on the right triangle on the right, that is
cos20° = 
= 
Multiply both sides by y
y × cos20° = 11 ( divide both sides by cos20° )
y = 
≈ 11.71
Using the sine ratio on the right triangle on the left, that is
sin35° = 
= 
= 
Multiply both sides by x
x × sin35° = 11.71 ( divide both sides by sin35° )
x = 
≈ 20.42
If Gail practises swimming for 1 and 1/4 hours a day, then in a week she'll do:
1 1/4 * 7 = 5/4 * 7 = 35/4 = 8 3/4 [hours]
In other words she'll practice 8 hours and 45 minutes a week (assuming that she's still practicing on weekends).
Answer:
Step-by-step explanation:
idk
Answer:
Let's work out the intercepted points:
-4x + 8 = -3x^2 + 5x + 2
<=>
3x^2 - 9x + 6 = 0
<=>
x^2 - 3x + 2 = 0
<=>
(x - 1)(x - 2) = 0
<=>
x = 1 => y = -4 x 1 + 8 = 4 => A(1, 4)
and
x = 2=> y = -4 x 2 + 8 = 0 =>B(2, 0)
Then, length of chord AB is calculated by:
L = sqrt [(2 - 1)^2 + (0 - 4)^2)] = ~4.123
