If the distance between A(0, 4) and B(3,a) is 5 units then find the value of a.
2 answers:
Answer:
a = 8
Step-by-step explanation:
Calculate AB using the distance formula and equate to 5
d =
with (x₁, y₁ ) = A (0, 4 ) and (x₂, y₂ ) = B (3, a )
d =
=
= , then
= 5 ( square both sides )
9 + (a - 4)² = 5² = 25 ( subtract 9 from both sides )
(a - 4)² = 16 ( take square root of both sides )
a - 4 = 4 ( add 4 to both sides )
a = 8
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Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 12 ( take the square root of both sides )
x = ± = ±
= ± 2
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Answer:
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Given:
Find:
Solution: The first step that we must take is to convert the tree height to centimeters and after doing so we would just subtract 70 cm from that to get the pole height.
<u>Convert to cm</u>
<u>Combine</u>
<u>Subtract 70 from the tree height</u>
Using the information from the problem the height of the pole would be 3955cm.