Answer:
1.50
Step-by-step explanation:
X = hot dog price
Y = hamburger price
5X + 4Y = 16.50
4X + 5Y = 17.25
4(5X + 4Y = 16.50)
20X + 16Y = 66
5(4X + 5y = 17.25)
20X + 25Y = 86.25
Now subtract the equations:
20X + 16Y = 66
20X + 25Y = 86.25
9Y = 20.25
Y = 2.25
Hamburger is $2.25
4X + 5(2.25) = 17.25
4X + 11.25 = 17.25
4X = 6.00
X = 1.50
Hamburgers are $2.25
Hotdogs are $1.50
Answer:
a=7 b=11 c=9
Step-by-step explanation:
-2-(9) -2-(9) = -2+9=7 b -2-9=-11 c -2-(-9)-(-2) = -2+9+2=9
Answer:
there both different the only same number is four
Step-by-step explanation:
Answer:
f(g(2)) = -11
Step-by-step explanation:
f(g(2))=
First we need to find g(2)
g(x) = 3x-4
We let x=2
g(2) = 3(2) -4
6-4
=2
Now we stick the value of g(2) in for x in f(x)
f(x) = -2x^2 - 3
f(2) = -2(2)^2 -3
=-2 (4) -3
= -8 -3
=-11
