Answer:
1
Step-by-step explanation:
5m + 9n
5(-7) + 9(4)
-35 + 36
1
Answer:
.9639
9.639 * 10^3
Step-by-step explanation:
This question was unclear but this is the closest I understood of.
Hope this helped! :)
16. .375 mi
19. 440 yards
20. 500 pounds
21. I don’t fw graphs : 3 hopes this helps sum
ANSWER
The solution is

<u>EXPLANATION</u>
We have

and

Let us substitute equation (1) in to equation (2). This gives us,

We rewrite this as a quadratic equation as the highest degree is 2.

This implies that

we factor to obtain,



This means,


We substitute this values into any of the above equations, preferably equation (1)
When,
, 
When,
, 
The solution is
