Answer:
2.5477 feet
Step-by-step explanation:
Refer the image attached to understand my solution.
BC = height of lamppost.
DE = Julia
AD = shadow of Julia
BD = 2 feet. AD = 5 feet
BA = BD + AD
= 2 + 5 = 7 feet
In ΔABC
tan 20° =
BC = 7 * tan 20°
BC = 2.5477 feet
SO the height of lamppost = 2.5477 feet
Answer:
$287.50
Step-by-step explanation:
31.25 x 9.20 = $287.50
Yes. J<span>amie's estimate seem reasonable.
This is because, when we expand the expression </span><span>1.43 x (-20/39) we get;
</span><span>1.43 x (-20/39) = -0.73333... (3 is repeating)
Her estimate was -0.75 while the actual answer is </span>-0.73333...
This is a good estimate since the difference is 0.016666.... which is negligible.
Let G = Garden Table, B = Bench
Given G + B = 1000, G = 3B
Substitute second equation with the first equation
3B + B = 1000
4B = 1000
B = 250