Evaluate the expression using substitution ( m=3, y =-5) 5m + 3y/5 + 4( m-y)
1 answer:
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Answer:
162 and
Step-by-step explanation:
To find the original number multiply by the reciprocal of the multiplier, that is
90 × =
= 162
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Similarly
Change the mixed number into an improper fraction
5 =
, then
×
( cancel 35 and 7 by 7 / cancel 6 and 3 by 3 )
= ×
=
First we are going to find the common denominator of both fractions. To do that, we are going to multiply their denominators:
Now we can rewrite our expression using the common denominator:
Finally, we can use the trig identities:
and 
to simplify our trig expression:
We can conclude that the correct answer is the fourth one.
Now we can rewrite our expression using the common denominator:
Finally, we can use the trig identities:
We can conclude that the correct answer is the fourth one.