Well since the only possible step to begin with is finding the square root of the entire equation, we are left with :
x+y-5 =√(30)
So from there we add 5 and subtract y to/from √30 and get :
x = √(30)-y+5
or
x = √(2)*√(3)*√(5)-y+5 (if the teacher or instructions preferred √(30) simplified)
Answer: I think it might be 3.5 hours
Step-by-step explanation: 4 - 1.5 = 3.5
I'm not 100% sure but hope this helps!
<span>Isabella can buy together 5 paintbrushes ( p ) and jars of paint ( p ) : j + p = 5, She can`t buy 4 items ( because 4 * $0.99 = $3.96 < $4.87 ) and she also can`t buy 6 items ( 6 * $0.95 = $5.70 > $4.87 ). So: p = 5 - j. Another equation is: 0.95 * ( 5 - j ) + 0.99 j = 4.87, 4.75 - 0.95 j + 0.99 j = 4.87; 0.04 j = 0.12; j = 0.12 : 0.04; j = 3, p = 5 - 3 = 2. We can prove it: 0.95 * 2 + 0.99 * 3 = 1.90 + 2.97 = 4.87. Answer: Isabella buys 2 paintbrushes and 3 jars of paint. </span>