I think this might work 440=55x-275 then solve
Answer:
f(x)=0.333*(1*x+-4)*(1*x+1)
Step-by-step explanation:
<u>Your exercise:</u>
Find a quadratic function with roots at 4 and -1 whose graph goes through the point -2 .
The function f(x)=a*(1*x+-4)*(1*x+1) has the desired roots.
Insert the point (1, -2) to find a.
-2=a*(1*1+-4)*(1*1+1)
-2=1*a*(1*1+-4)*(1*1+1) (add 1 to -4)
-2=1*a*-3*(1*1+1) (add 1 to 1)
-2=1*a*-3*2 (Multiply -3 by 2)
-2=1*-6*a (Swap both sides of the equation.)
-6*a=-2 : (-6)
1*a=0.333
f(x)=0.333*(1*x+-4)*(1*x+1)
Answer:
<h2>4 mph</h2>
Step-by-step explanation:
To find the rate of mph we will multiply. Keep in mind that:
<h3>1 hour = 60 minutes</h3>
Because we have a rate in 10 minutes, this is easy. We just multiply 2/3 by 6 to get our answer.
2/3 x 6 = 4
Mario walks at a rate of 4 miles per hour.
I'm always happy to help :)
Answer:
6 + 8x
Step-by-step explanation:
5x - 2(x+1) = 1/4
5x - 2x + 1 = 1/4
3x + 1 = 1/4
3x = -0.75
x = -0.25
Hope this helps, and please mark brainliest!