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Janell can walk 3 3/4 miles in 1 1/2 hours. At that rate, how many miles can Janell walk in 4 hours?
1 answer:
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Answer:
x = 7 , y = 7
Step-by-step explanation:
A 45- 45- 90 triangle is an isosceles right triangle with the 2 legs being congruent , that is
x = 7
Using Pythagoras' identity in the right triangle, then
y² = 7² + 7² = 49 + 49 = 98 ( take square root of both sides )
y = =
=
×
= 7