Answer:
x = 7
y = 11
z = 14
Step-by-step explanation:
x + y + z = 32
Let's say the youngest is x, middle is y and oldest is z.
y= x+4 (age of the youngest + 4)
z= 2x (twice as old)
We can replace y and z in the main equation above with these values that contain x.
x + (x + 4) + 2x = 32
4x = 28, divide both sides by 4
x = 7
y = x + 4 = 7 + 4 = 11
z = 2x = 2*7 = 14
And to check: 7 + 11 + 14 = 32
Answer:
$19.25
Step-by-step explanation:
2.5*7.7=19.25
the slope-intercept form is y= 4x−2
Hi there!
45 mi to 40 min = 1.125 mi per min
45 ÷ 40 = 1.124
Hope this helps!
