I think the first one is correct. Since “three less than z squared” insinuate that the value is 3 units less than the value z^2
Answer:
In a pulley, the ideal mechanical advantage is equal to the number of rope segments pulling up on the object. The more rope segments that are helping to do the lifting work, the less force that is needed for the job.
Answer:
y = 4/5x - 9/5
Step-by-step explanation:
4x - 5y = 9 to solve for y you get it by itself.
-4x -4x minus 4x from both sides
-5y = - 4x + 9
/-5 /-5 Divide both sides by 5
y = 4/5x - 9/5 because -4/-5 is 4/5 and 9/-5 is - 9/5
Answer: x = -1
Step-by-step explanation:
You need to convert to the same base
So
For these values to be equal, the exponents have to be equal
-4 = -2x - 6
2 = -2x
x = -1
