1 yard = 3 feet:
21 feet / 3 ft = 7 yards
12 feet / 3 feet = 4 yards
7 x 4 = 28 square yards
he will need 28 tiles
3 × y - 10 = 17 ;
3 × y = 27 ;
y = 27 ÷ 3 ;
y = 9
x^2 - x/5 + 2 = 0
Subtract 2 from both sides.
x^2 - x/5 = -2
Multiply all terms by 5.
5x^2 - x = -10
Add 10 to both sides.
5x^2 - x + 10 = 0
We can now apply the quadratic formula:

1 ± (√ 1 - 200) / 10
1 ± √-199 / 10
1 ± i√199 / 10
<h3><u>The solutions are equal to 1 + or - i times the square root of 199 divided by 10.</u></h3>
Answer:
2 1/2
Step-by-step explanation:
8-5 1/2 = 2 1/2
Hope this helps!
Answer:
5 per hour
Step-by-step explanation:
15 miles the total amount he ran divided by 3 the total amount of time
15/3=5 so John ran 5 mph