Positive Nine is the right answer after direct substitution.
With the way the equation is written, we can assume that the “x2” is x multiplied by 2.
The x2 and 9x are like terms, and can be simplified to 11x.
Our new equation is
f(x) = 11x + 18
With no exponential functions in the equation, the difference of each value’s output would be 11.
Answer:
230 mph in 2 hours
Step-by-step explanation:
first i found out how many miles does the train travel in one hour
460 miles ÷ 4 hours
= 115 mph / 115 miles in one hour
the question asks what was the speed of the train when it completed half the distance
half the distance = 1/2 of 460 =230 miles
230 miles is half the distance of the trip
& we know this is correct because earlier we found out that the train travels 115 miles in one hour & in 2 hours it travels 230 miles
115×2=230.
the one thing that i dont quite know is if you say the train is traveling 115 mph or 230 miles in 2 hours .im not sure of tnat .
Answer:
x=-21
Step-by-step explanation:
1/3x + 9 = 2
subtract 9 on both sides
1/3x = -7
multiply 3 on both sides bc its the reciprocal of 1/3
and you get -21
