Malcolm is working on a math project. As part of the project he needs to find 5 cars whose gas mileage averages 22 miles per gallon (mpg). He has collected the data: 18 mpg, 19 mpg, 21 mpg, and 25 mpg for 4 cars. Which equation could he use to find the gas mileage on the fifth car?
18+19+21+22+25
O A gas mileage
5
O B. gas mileage = 22 x 5 - 18 - 19 - 21 - 25
O C. gas mileage
(22 + 18 + 19 +21 +25) x 5
.
gas mileage
(18+19+22+25) x 5 - 22
i

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

don't report but were is the digram

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0