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Natali5045456 [20]
3 years ago
11

a 6ft tall man casts a shadow that is 9ft long. at the same time, a tree nearby casts a 48 ft shadow. how tall is the tree

Mathematics
2 answers:
Jlenok [28]3 years ago
5 0
The tree is 45ft tall
aniked [119]3 years ago
3 0
Height of a tree = x

x/48 = 6/9
x = (48*6)/9 = 32 ft   ← answer
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Can someone explain the formula for the area of a pentagon, and the formula for the length of an arc of a portion of a circle? P
RSB [31]
So a pentagon is constructed by five identical triangles, that's why you can find the area of one triangle and multiply it with 5:
A_pentagon=A_triangle*5
To find the area of a triangle you must use tangens.
You can watch this for more on that on youtube. 

For the length of an arc or a portion of a circle you can find it using: 
arc lenght = 2π*r(A/360), where A=angle. 
So if you know radians, then 2π is a whole circle. And to calculate for the specific circle you have to use the radius. That's why you multiply with radius, which is the only difference between any two different circles. you then multiply with the  part of the circle that you want to find the lenght for, which is A/360 (because there are 360° in a circle)

I hope that helped. 


4 0
3 years ago
A box is filled with 3 yellow cards , 4 green cards. A card is chosen at random from the box. What is the probability that the c
nasty-shy [4]

Answer:

3/7

Step-by-step explanation:

total cards 3+4 = 7

Not green = 7-4 = 3 cards

P ( not green )= not green cards / total = 3/7

6 0
3 years ago
Read 2 more answers
Kelly buys a sweater for $16.79 and a pair of pants for $28.49. She pays with a $50 dollar bill. How much change should kelly ge
Furkat [3]

Answer:

$4.72

Step-by-step explanation:

16.79+28.49=45.28

50-45.28=4.72

5 0
3 years ago
In the year 1987, an investment was worth $29,800. In the year 1997, this
Veseljchak [2.6K]

Answer:

a) 46.98%

b) increasing rate of change

Step-by-step explanation:

In year 1987, investment worth $29800

In year 1997, investment worth $43800

Rate of change = 1997investment - 1987investment / 1987investment × 100

Rate of change = 43800 - 29800/29800 × 100

= 14000/29800 × 100

= 0.46979 × 100

= 46.98%

Therefore, the rate of change of the investment during the time period is 46.98%.

b) The rate of change of the investment is increasing. This is as a result of the following reasons. First, the value of rate of change is positive. Second, there is no value for rate of change for period before the time period so we cannot compare rate of change.

8 0
3 years ago
2% of 250 this is worth probaly eleven points plz help me find the percent of the quantity ​
lapo4ka [179]

Answer:

= 5

Step-by-step explanation:

(2/100) × (250/1)

multiply the numerators

500/100

5/1

= 5

7 0
3 years ago
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