Answer:
A. 29 feet
Step-by-step explanation:
Use cos to find the hypotenuse
cos = adj/hp
0.64 = 20/hyp
hyp = 20/0.64
hyp = 31.25
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Use Pythagorean Theorem to find the height of tree above eyes
a² + b² = c²
a² + 20² = 31.25²
a² = 31.25² - 20²
a² = 576.5625
a = 24 (to the nearest foot)
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Finally add in the eye height
h = 24 + 5
h = 29 feet
62 people after 40 minutes.
Multiply the previous number by 2 and add that to the total of recipients
0 minutes = 2. 10 minutes (2+4) =6. 20 minutes (2+4+8) = 14. 30 minutes (2+4+8+16)= 30. 40 Minutes (2+4+8+16+32) = 62
Answer:
D.1
Step-by-step explanation:
13=12+? subtract 12 by both sides
1=?
Answer:
30% of people surveyed were satisfied with the car.
Step-by-step explanation:
We are given:
Total participants in survey= 2800
People satisfied with car = 840
We need to find percent of the people surveyed were satisfied with the car.
The formula used is: 

So, 30% of people surveyed were satisfied with the car.
The formula for area of a circle = PI x r^2
since we know area, we can put that in the formula and solve for r ( which is the radius) diameter is radius x 2
826 = 3.14 x r^2
divide both sides by 3.14:
r^2 = 826 / 3.14
r^2 = 263.06
r = square root (263.06)
r = 16.22 cm
diameter = 16.22 * 2 = 32.44 cm