Answer:
2 and 3 are the only true statements
Answer:
21
Step-by-step explanation:

Multiplying both sides by 7, we get

The two 7s on the left cancel out to give 1, so

Please mark Brainliest if this helps!
Answer:
c) 10
Step-by-step explanation:
You do 5 C 3 ( because you are choosing 3 from the remaining 5).
5C3 = 5!/(3!2!) = 10
Answer:
wish it was that easy son
Step-by-step explanation:
.........................
Answer:

Step-by-step explanation:

Let's solve the second equation for x

Now let's replace this in the first equation.

Distribute the 5

Individually solve the fractions.

Solve;

Subtract 20 from both sides.

Divide both sides by -7


Now replace the value of y in any of the two equations to find x.


add
on both sides.



Multiply by the reciprocal fraction of 3. I suppose you know that 3 is 3/1 hence the inverted fraction would be 1/3

