Answer:
x^2+x-4
Step-by-step explanation:
(f-g)=(x^2+1)-(5-x)
=x^2+1-5+x
=x^2+x-4
Answer:
The first step is to replace the y in y-x=15 with 7x (we can do this because the first equation tells us that they're equal)
solve and get
(2.5,17.5)
or x= 2.5 y=17.5
Step-by-step explanation:
The first step is to recognize that y=7x which means that we can just replace the y in the second equation with 7x
7x-x=15
6x=15
x=2.5
Then we can solve for y
y=7(2.5)
y=17.5
Answer:
Step-by-step explanation:
relative speed is calculated by the difference of the one with respect to the other
let car be 70 mph
and lorry be 50 mph../
relative speed of car with respect to lorry = 70-50 = 20 mph
this is ur answer
Answer:
sammy would run out of money in 20 days if that 's the answer your looking for
Step-by-step explanation:
i don't exactly understand the question but i hope this helps :)
Answer:
the answer is 6x+11
Step-by-step explanation:
1/4(12+16)+3x+7
1/4×4(3x+4)+3x+7
(3x+4)+3x+7
3x+4+3x+7
6x+11
