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E79: Substitute values into more general algebraic expressions.

v= u + at
u = 1
a = 3
t = 1/2
Work out the value of v.

User Sky
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2 Answers

4 votes
v = u + at
v = 1 + (3x 1/2)
v = 1 + 1.5
v = 2.5
User Stephanie Schaye
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5 votes

Answer:
v=(5)/(2)

Explanation:

First, substitute the variables with the given values.


v=u+at turns into
v=1+(3)((1)/(2) )

First, multiply what is in the parentheses


(3)((1)/(2))=(3)/(2)


v=1+(3)/(2)

Turn 1 into a fraction over 2 by multiplying 1 by 2 and using it as the numerator


1=(2)/(2)


v=(2)/(2) +(3)/(2)

Add


v=(5)/(2)

User Admoghal
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