Answer:
-105
Step-by-step explanation:
hello there!
f(x)= -x^2+8x
f(-7)= -(-7)^2 + 8*(-7)
= - 49 + (-56)
= -105
hope it helps!
thank u!
Triangle Area Formula:
0.5 * Base * Height
SO,
0.5 * 10 * Height = 45.5
5 * Height = 45.5
Height = 9.1
Answer: -5/2
Explanation: Rise over Run. Since the line is going downwards, the slope is negative
Answer:
30$
Step-by-step explanation:
1st sister is 3x
2nd sister 2x
3th is x
3x+2x+x=180
6x=180
X=30
3x+7=-x-1
move -x to the other side
sign changes from -x to +x
3x+x+7=-x+x-1
3x+x+7=-1
4x+7=-1
move 7 to the other side
sign changes from +7 to -7
4x+7-7=-1-7
4x=-8
Divide by 4 for both sides
4x/4=-8/4
Answer: x=-2
