Answer:
4 and 15
Step-by-step explanation:
Let the two numbers be a and b.
The sum of the two is 19. Therefore:

One number (let's use a) is 7 <em>more</em> than twice the other. Thus:

Solve for the system of equations. Substitute the second equation into the first:

Subtract 7 from both sides:

Combine like terms:

Divide by 3:

So, b is 4.
And since they add up to 19, this means that a is:

So our numbers are 4 and 15
And we are done :)
Answer:
12.9
Step-by-step explanation:
The only possible one is 1/8 and the answer would be B. 0.125
Answer:
D.
Step-by-step explanation:
It's a right triangle so

x = 41
Answer:
Step-by-step explanation:
vertex form of quadratic: y = a ( x − h ) ^ 2 + k
h= -2 , k = -2
y=a(x+2)^2-2
Substitute (-1,1)
1=a(-1+2)^2-2
a=3
y=3(x+2)^2-2
Expanding and give
y=3x^2+12x+10