Answer: x = 69
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Let the price before tax be x, then we have:</u>
- x + 8% = 372.60
- x + 0.08x = 372.60
- 1.08x = 372.60
- x = 372.60 / 1.08
- x = 345
The initial price was $345
Answer:
-1/5
Step-by-step explanation:
When a line is perpendicular to another line, it's gradient will be a reciprocal.
To calculate the reciprocal of a number you have to flip the fraction the other way around.
So, in the case our current gradient is 5/1 (5/1 is the same as just 5) and we need to flip in over to get 1/5, which is our new gradient.
The final step is to make the number negative because the line is going down. This gives us the final answer of -1/5.
Answer:
3
Step-by-step explanation:
f(x) = x^2 + 2x - 5
f(-4) = (-4)^2 + 2(-4) - 5
f(-4) = 16 - 8 - 5
f(-4) = 3
Answer:
x<4
Step-by-step explanation:
-5x<-15x+40
Add 15x to each side
-5x+15x<-15x+15x+40
10x<40
Divide by 10
10x/10<40/10
x <4
