Received three problems that r giving me a headache.
The first is R raised to the power 0.75 =24. Does this mean that I should convert 0.75 to 3/4 then multiply 24 by 3 and find the answer raised to the power 4?
(2) R squared +R squared =R cube . How is this possible?
(3) R raised to the power 0.5 - 90=0 Does this mean that I convert 0.5 to 1/2 and then find a number whose square root is 90 and do my calculations from there?
ok. so the first thing you should know is that raising something to a power is not the same as multiplying the something to the power.
for the first, raise both sides to the 1/0.75th power. this is the same as the 4/3rd power.
see post #3 here to see what we do when we have a fractional power.
for the second:
note that we have
subtracting from both sides, we get:
....now factorize
Now what?
for the third:
add 90 to both sides
now it is just like the first question. you want to raise both sides to a power that will make the power of R 1 when multiplied. here, of course, that is 2
now continue