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alekssr [168]
2 years ago
14

How do I solve this

Mathematics
1 answer:
Montano1993 [528]2 years ago
6 0
Use arccos...cos^-1 so

cos^-1 (0.8195)

it equals 34.96522689°
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Area of a regular decagon with side length of 8in
Scrat [10]

Answer:

492.43in²

Step-by-step explanation:

I might be wrong.

4 0
3 years ago
Please please help. I have a bunch of these and I don’t understand it at all
shtirl [24]
The correct option is: Option (B) \sum_{i=1}^{7} (5i-2)

Explanation:

First thing is that the difference between each number in the series with the next number is 5. It means it must be the multiple of 5. There are two options that contain multiples of 5: Option B and Option D. Now in the option D, the upper limit is 6. If we put 6 in the expression: 5(6)-2, the last term would be 28. However in the series given in the question, the last term is 33. Hence 5(7) - 2 = 35 - 2 = 33 which is Option B.

When i=1: 5(1)-2 = 3
When i=2: 5(2)-2 = 8
When i=3: 5(3)-2 = 13
.
.
When i=7: 5(7)-2 = 35-2 = 33
Hence the correct option is (B).
3 0
3 years ago
Why are the cave paintings of early humans significant?
Fittoniya [83]

Answer:

They give evidence of cultural, religious, or social characteristics of the people

6 0
3 years ago
Please someone help me I’m confused
insens350 [35]

Answer:

a2 =14

a4 = 22

a11 = 50

Step-by-step explanation:

an = 10 + (n-1) *4

n is the term number

Let n =2

a2 = 10 +(2-1)*4 =10 +(1)*4 = 14

Let n =4

a4= 10 + (4-1)*4 = 10 *3*4 = 10+12 = 22

Let n = 11

a11 = 10 +(11-1)*4 = 10 *10*4 = 10+40 = 50

4 0
3 years ago
Help please I need it:
jonny [76]

Answer:

Step-by-step explanation:

The number of sandwiches sold: 73

The cost to make one sandwich: S

The profit the band earns from one sandwich: 0.2S

The amount of money that the band recieves for selling one sandwich:

S + 0.2S

6 0
2 years ago
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