Answer:

Step-by-step explanation:
Let
be the quadratic function.
implies that

Similarly, 
and 
From equation 2, 
Put (4) into (1) to get:

Put (4) in (3) to get:

Subtract (6) from (5) to get:


Put b=-3 in (4) to get:
a=--3-5=-2
Put b=-3 in to (6) to get:
-2(-3)+c=-3
6+c=-3
c=-6+-3=-9
Therefore the required equation is 
Answer:
50mph
Step-by-step explanation:
Say for example car A increases by 10 miles per hour and car B decreases by 10 miles per hour. If car A2 = car B3 then by eliminating a few numbers and finally get to 50 you get the following equation.
A = 50+10
b = 50-10
A = 60
B = 40
A2 = 120
B3 = 120
120 = 120
The 3 inside angles of a triangle need to equal 180 degrees.
Since you are given 2 angles, subtract both of those from 180 to find X.
X = 180 - 70 - 30 = 80 degrees.
X = 80
1 is 16 units and 2 is idk
Answer: B. one-third
Step-by-step explanation:
Probability of picking a red marble, P(R) = 1/6
Probability of picking a yellow marble, P(Y) = 1/2
Therefore, the probability of picking a blue marble will be:
= 1 - (P(R) + P(Y))
= 1 - (1/6 + 1/2)
= 1 - (4/6).
= 1 - 2/3
= 1/3
The probability of picking a blue marble will be one third