Because in the function f(x) all you do is plug in the value that is given...7
2*7-5=14-5=9
Your answer is 9.
Tan^5x=tan^3x∗tan^2x
sin^2x+cos^2x=1
tan^2x+1=sec^2x
tan^2x=sec^2x−1
1. If you are trying to find x, then you simply set each equation equal to each other, because they are both equal to y.
x + 6 = -2x - 3
x = -2x - 9
3x = -9
x = -3
2. Now you have to rearrange each equation to be qual to y
equation 1:
5x - y = -5
5x = -5 + y
5x + 5 = y
equation 2:
3x - 6y = 24
3x = 24 + 6y
3x - 24 = 6y
x/2 - 4 = y
then set them equal
x/2 - 4 = 5x + 5
x/2 = 5x + 9
x/2 = 10x/2 + 9
-9x/2 = 9
-9x = 18
x = -2
what box? need further Intel
Answer:
Streamers are $2.50 each
Balloons are $1.50 each
Step-by-step explanation:
Make a system of equations
3s + 15b = 30
2s + 4b = 11
Solve by elimination: multiply the top equation by 2 and the bottom equation by -3.
6s + 30b = 60
-6s -12b = -33
18b = 27
b = 1.5
Plug in 1.5 as b to find s
3s + 15(1.5) = 30
3s +22.5 = 30
3s = 7.5
s = 2.5
The streamers are $2.50 and the balloons are $1.50