Answer:
x=3 and x=-1.25
Step-by-step explanation:
4x^2-7x=15
subtract 15 from each side:
4x^2-7x-15=0
factor (trying different numbers that the sum is 7 and the quotient is 15)
(2x-6 )(2x+2.5 )=0
2x-6=0 add 6 to each side
2x=6
x=3
2x+2.5=0 subtract 2.5 from each side
2x=-2.5
x=-1.25
Answer:
1.12675hours approximately
Step-by-step explanation:
If the tub was 4.97 gallons it would take 1 minute Right?
To find the the time required to fill the tub divide volume of tub by the rate of hose. We have 336/4.97=67.605minutes
Divide by 60` 67.605/60=1.12675hours approximately
Answer:
Total area of field sold(35*35)+(51*25)=2500
Area of square field is 2500
One side = 
= 50
So, the perimeter of the square(4*a)=4*50=200
Cost of fencing = 200*1.5 usd = $300
Step-by-step explanation:
Answer:
4/9
Step-by-step explanation:
The probability of getting a card less than 7 is 2/3, and picking a card greater than 5 is 2/3 too, so I believe that now you just have to multiply them: 2/3 * 2/3 = 4/9, and that, I believe, is your answer.
Tell me if I'm wrong :)
as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solve for "y".
