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pav-90 [236]
3 years ago
7

What is the area of the circle below, the circle has a radius 20.5 ft.

Mathematics
1 answer:
Darya [45]3 years ago
8 0

Answer:

It is approximately 1320.25

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Simplify the trigonometric expression sin(4x) +2 sin(2x) using Double-Angle<br> Identities.
emmasim [6.3K]

Answer:

8sin(x)cos³(x)

Step-by-step explanation:

sin(4x) +2 sin(2x)  = 2sin(2x)*cos(2x) + 2sin(2x) = 2sin(2x)(cos2x + 1)=

= 2sin(2x)(cos²x - sin²x + cos²x + sin²x)=²2sin(2x)*(2cos²x)=

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6 0
3 years ago
Could 18 in, 6 in, 13 in form a triangle
Tanya [424]

Answer: Yes

Step-by-step explanation:

The reason on why it could form a triangle because 18 is the highest side in the triangle and if you have 2 of the smaller sides that are greater than the larger size then you could form a triangle and 13 and 6 equals to 19 so you could make a triangle hopes this helps and have a good day.

7 0
3 years ago
Which inequality represents all possible solutions of -12d2 -6?
qaws [65]

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f

Step-by-step explanation:

6 0
3 years ago
Solve equation please!! :) 10 points
dimulka [17.4K]
3(x-3)-15 = 0
3(x-3) = 15
3x-9 = 15
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3 0
3 years ago
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A local high school held a two-day fundraiser selling lunches. The equations shown represent the amount of money the school coll
scoundrel [369]

The given equations are

12x + 4y = 152 ...........1

32x + 12y = 420 .....2

Multiplying equation 1 by 3 to make  coefficient of y same we have:

36x+12y= 456

32x+12y=420

Subtracting the two equations we have:

4x=36.

Dividing by 4 both sides

x= 9.

Substituting x value in equation 1

12(9) + 4y = 152

108+4y=152

Subtracting 108 both sides: 4y=44.

Dividing both sides by 4.

y=11.

cost of the vegetarian lunch is $11.


In the equations, x represents the cost of a chicken lunch and y represents the cost of a vegetarian lunch.




5 0
3 years ago
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