Answer:
20
Step-by-step explanation:
Let's start by rewriting the second equation in terms of "x":

Subtract y from both sides:

Now, substitute "5-y" for "x" in the first equation:

Note that:


Cancel out like terms:

Subtract 25 from both sides:

Divide both sides by -10

Now, substitute this value back into either of the equations to solve for x.

Add 15/2 to both sides:

Now, find the difference:

-.5 or negative 1/-2
same thing just in a dec and frac
It would round to 5 because 4.999 is closer to 5 than a decimal (idk if that's 100%)
Answer:
The answers are as follows:
5. c
6. b
7. not sure, sorry
8. b
Step-by-step explanation:
Answer:
1/6 of a minute.
Step-by-step explanation: