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4 years ago

Find the value of y.

Mathematics

2 answers:

agasfer [191]4 years ago

5 0

Answer:

=2√2 the fourth choice.

Step-by-step explanation:

We can use the Pythagoras theorem to calculate the value of y.

a²+b²=c²

a=1

b=y

c=3

Therefore substituting for the values in the theorem above we get:

1²+y²=3²

Leave y on one side.

y²=3²-1²

y²=9-1

y²=8

y=±2√2 in surd form.

Since we expressing length, a scalar quantity, we take the modulus of our answer. Thus y=2√2

Alex787 [66]4 years ago

4 0

Answer:

The answer should be the last one.

Step-by-step explanation:

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