Each mile took 7.5 minutes. So we did this by dividing 30 by 4. Hope this helped you :)
Answer:
Step-by-step explanation:
xy = 300
x + y = 50 Solve for y
y = 50 - x substitute into xy = 300
x(50 - x) = 300 Remove the brackets.
50x - x^2 = 300 Bring the left to the right.
0 = x^2 - 50x + 300
This is a quadratic. It will have 2 solutions.
a=1
b = - 50
c = 300
Put these into the quadratic equation.
It turns out that x has two values -- both plus
x1 = 42.03
x2 = 6.97
x1 + y1 = 50
42.03 + y = 50
y = 50 - 42.03
y = 7,97
(42.03 , 7.97)
====================
x2 + y2 = 50
6.97 + y2 = 50
y2 = 50 - 6.97
y2 = 43.03
(6.97 , 43.03)
Answer:
the value is 52
Step-by-step explanation:
pls brain list me
Answer:
Bill ran 3 miles on Sunday
Step-by-step explanation:
the equation needed to solve this question would look something like this, with x representing the miles Bill ran on Sunday -
24= (x) + (x+4) + 2(x+4)
simplified -
24 = 4x +12
24-12 = 12
12 = 4x
3 = x
Bill on Sunday ran 3 miles
Bill on sunday ran (3+4) 7 miles
Julia on Sunday ran 0 miles
Julia on Sunday ran (7x2) 14 miles
3+7+0+14 = 24