2 answers:
6.4x + 2.8y = 44.4
6.4(3) + 2.8y = 44.4
19.2 + 2.8y = 44.4
-19.2 -19.2
2.8y = 25.2
------ ------
2.8 2.8
y = 9
Answer:
when x=3 the value of y is 9
Step-by-step explanation:
6.4x+2.8y=44.4, when x=3

To find y when x=3, plug in 3 for x in the given equation



Subtract 19.2 on both sides

Divide both sides by 2.8
y=9
So when x=3 the value of y is 9
You might be interested in
Answer: 3 and 19
Whoops, I'm a bit rusty, but numbers are also terms. Hope that also helps.
Answer:
the answer is 456 miles per hour
57.4/10=5.74
the answer is 5.74
Sent a picture of the solution to the problem (s).