Answer:
x = ±4.5
Step-by-step explanation:
4x² - 15 = 66
Add 15 to both sides.
4x² = 81
Divide both sides by 4.
x² = 20.25
Take the square root of both sides.
x = ±4.5
Hope this helps!
Change mixed fraction to improper fraction and also the second fraction has to be reciprocal
Ex- 3/8= 8/3
So now the problem is
13/8*8/3= 13/3 (because you cross divide) Now, turn into fraction
Divide
13 divided by 3= 4 1/3
So your final answer is 4 1/3
Answer:
x = 15
y = 6
z = 10
Step-by-step explanation:
Okay, let's set up the equation(s).
x = 3 + 2y
x = 3/2z
x + y + z = 31
With some algebra that God knows how came through my mind, I got this:
x = 15
y = 6
z = 10