Note that multip. 10 by 2 results in 20; mult. 20 by 2 results in 40, and so on. So the common ratio is 2.
Answer:
8:4:13
Step-by-step explanation:
Divide each by 3 so you get 8:4:13
A 3-d figure can be created using nets.
Answer:
y = -2x^2 -4x +5
Step-by-step explanation:
The vertex is at (-1,7) and the y intercept is at (0,5)
The vertex form of a parabola is
y = a(x-h)^2 +k
where (h,k) is the vertex
y = a(x--1)^2 +7
Then substitute the point into the equation
y = a(x+1)^2 +7
5 = a(0+1)^2 +7 +7
Subtract 7 from each side
5-7 = a(1)^2
-2 = a
y = -2(x+1)^2 +7
Now FOIL
y = -2 (x^2 +2x+1) +7
Then distribute
y = -2x^2 -4x-2 +7
y = -2x^2 -4x +5
Answer: 1.37
Step-by-step explanation:
so to find out how far molly walked you have to find out how far her sister and brother walked combined 1.23+0.85=2.08 then subtract 3.45-2.08 to get 1.37
molly waled 1.37 more miles then her brother and sister combined
