Answer:
A
Step-by-step explanation:
The angle between the tangent PQ and the radius RP at the point of contact P is 90°
The sum of the 3 angles in Δ PQR = 180° , thus
∠ Q = 180° - (90 + 73)° = 180° - 163° = 17° → A
I think that should be "D" or "A"
Answer:
22.9m
Step-by-step explanation:
Using Pythagorean theorem, we can get two equations using the angles.
From Point A:
∠A = 20°
AB = 20m
From Point B:
∠B = 29°
BD = x
What we are looking for is the opposite side of each right triangle, each person makes because we have one adjacent side. We also know that both opposite sides will be equal.
So we use this formula for both point of views:

Where:
Opposite = height of the building
Adjacent = distance from the building
We are looking for the opposite side so we can tweak our formula to get an equation for the height

Using our given, we can solve for the distance of point B to D:

The distance of point B to D is 38.2572 m.
Now that we know the distance of BD we can solve for the height of the building using only the given from point B.




But this is only the height from the line of sight. To get the height of the building from the ground, we just add the height of the viewer, which is 1.7m.
21.21m + 1.7m = 22.91m
The closest answer is: 22.91 m
he ended with 16
he earned 6 for mowing the lawn, so before mowing the lawn he had 16-6 =10
he spent half on pizza and had 10 left so allowance = 10*2 = 20
he gets $20 a week for allowance
Answer: 19 coins
Step-by-step explanation:
38-19=19
To check, take any one of the nubers and replace it with x, and when you solve for x. you'll get that number back. For example:
Let x represent the amount used to buy a notebook
19+x=38
x=38-19
x=19