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Ksju [112]
3 years ago
8

F the area of an equilateral triangle is 9√3 sq ft, how long is a side?

Mathematics
1 answer:
ANTONII [103]3 years ago
6 0
The area of an equilateral triangle is always:

A=√((3s^4)/16) or if you prefer:  A=(s^2/4)√3

So if A=9√3 we have:

9√3=(s^2/4)√3

9=s^2/4

s^2=36

s=6 feet
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Can u guys pls help me on this question and pls explain how u got the answer
Pie

Answer:

Step-by-step explanation:

find the area of every face and the base

area of face 1= 2

area of face 2= 2

area of face 3 = 2

area of base 1= 1.7

7.7 in squared

area of a triangle is the base x height divided by 2

face 1- 2 x 2=4

4/2=2

2x3(theres 3 faces to a triangle) =6

area of base- 2 x 1.7= 3.4

3.2/2=1.7

add the faces and the base together

7.7

8 0
3 years ago
How would you write the proportion 9:36
Lelechka [254]
9 is to 36

Hope this helped!
3 0
3 years ago
Read 2 more answers
Help plss sorry for wasting ur time!!
Mashcka [7]

Answer:

she started with 75 and puts in 15 dollars every week. meaning that she initially deposited $75

4 0
2 years ago
Read 2 more answers
The answer for 10 2/3×31/8 rounded to the nearest whole number?
BigorU [14]
10 \frac{2}{3} ( \frac{31}{8}) can be changed into this equation:

\frac{32}{3}( \frac{31}{8}  )

The 32 and 8 have a common factor of 8 and can be simplified to become this equation:

\frac{4}{3} ( \frac{31}{1})

Now multiply across to get \frac{124}{3} which then simplifies to 41 \frac{1}{3} which as a decimal is 41.333 (repeating 3s). Nearest whole number is 41. 

Your answer is 41
5 0
4 years ago
What is the value of 5k2−6 when k = 9?
Anarel [89]

Answer:

84

Step-by-step explanation:

Plug in 9 for k.

5(9)(2) - 6

first: (9)(2) = 9 x 2 = 18

5(18) - 6

second: 5(18) = 5 x 18 = 90

last: 90 - 6 = ?

84

hope this helps

5 0
2 years ago
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