You are using the distributive property so you will multiply all the numbers in the parentheses by 5. So the end expression would be 30m+20n-15p
Answer:
Tyrel scored 30 and Diego scored 15
Step-by-step explanation:
This is because the ratio of the score is 2:1 (Tyrel : Diego)
and if you add that together you get 3
which means you have to divide 45 by 3 which gives you 15
and this means I part = 15
so with the ratio 2:1 you have to multiply 15 by each ratio
so 15 x 2 = 30 and 15 x 1 = 15
which gives you 30 and 15
Step-by-step explanation:
the error:
it is stated that
subtract (5x)/(x+7) from both sides

multiply both sides by x + 7
7(x+7) = 49x
7x + 49 = 49x
subtract 7x from both sides to isolate x and its coefficient
49 = 42x
thus, this is only true when 49 = 42x. in order for these two equations to be equal, they must <em>always </em>be true, so this is wrong
the solution:
we want to express 7/x as (something) / (x+7). to do this, we can multiply 7/x by 1.
anything divided by itself = 1. thus, if we multiply both the numerator and the denominator by something that turns x into (x+7), we can do what we want to do.
(x+7)/x * x turns x into (x+7), so we multiply both the numerator and denominator by (x+7)/x to get

substitute this for 7/x in our original problem

Answer:
y= -3x - 1
Step-by-step explanation:
The graph intercepts y at -3 and the slope is -1