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maria [59]
3 years ago
10

Professor plum is standing 10 feet from a street lamp the light from the lamp is making his shadow 8 feet long. he estimates tha

t the angle of elevation from the tip of his shadow to the top of the street lamp is 40 degrees. about how high is the street lamp?
I know it's 18tan40, but where did the tangent come from? How do you know it's tan?
Mathematics
1 answer:
Daniel [21]3 years ago
4 0
Tangent uses the values opposite (the way the angle faces) and adjacent (the values next to it). Basically, on a triangle, tangent uses the lengths of the two sides that are NOT the hypotenuse.
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Kim has a job in which she makes $8 per hour plus tips. Yesterday, Kim made a total of $53, of which $13 was from tips. How many
Sonja [21]
The answer is 5 hours. Because if she works for $8 per hour and came home with $53, you subtract the 13 from the tips which leaves you with 40, and 40 divided by 8 is 5.
8 0
3 years ago
Fareed wants to add 1/4+5/8
kogti [31]
1/4×8/8= 8/32 5/8×4/4= 20/32
8/32 + 20/32 = 28/32
answer for A is 28/32 answer for B is they can help you find a common denominator by the bottom one of each fraction if the top one don't have the same denominator. ☺
7 0
3 years ago
Read 2 more answers
The figure below is dilated with the center of dilation at the origin and a scale factor
almond37 [142]

Old coordinate

  • B(2,-6)

As center of dilation is origin the scale factor only multiplied with B

So

new coordinate

B'

  • 1/2(2,-6)
  • (2/2,-6/2)
  • (1,-3)

6 0
2 years ago
In the rectangle below, AC has a length of 28 units. What is the length of DE?
Amiraneli [1.4K]

Answer:

D. 14 units

Step-by-step explanation:

it is a rectangle.

that means both diagonals are equally long.

E is in the middle of of diagonals.

so, since the whole diagonal (AC = DB) is 28 units long, one half of such a diagonal (AE = EC = DE = EB) is then

28/2 = 14 units long.

4 0
3 years ago
A golf ball is hit from the ground with an initial velocity of 208 feet per second. Assume the starting height of the ball is O
WITCHER [35]

Answer:

Step-by-step explanation:

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