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SIZIF [17.4K]
3 years ago
7

Can somebody explain why 8/17 is correct. Will make brainliest.

Mathematics
1 answer:
irina1246 [14]3 years ago
8 0

Answer:

8/17 is correct because cosine = adjacent/hypotenuse, and since angle A is theta, or the reference angle, the adjacent of A would be 8, and the hypotenuse is always across the right angle.

15/17 would be sine instead of cosine

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4 years ago
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What's the sum of the infinite geometric series where a1 = 240, and the common ratio is r = 1∕3 ?
sattari [20]

Answer:

360

Step-by-step explanation:

The formula for the sum of an infinite geometric series is a₁/(1-r), where a₁ represents the first value and r represents the ratio. We can plug in our values here to get

a₁/(1-r) = 240/(1-1/3)

= 240 / (2/3)

= (240/1) / (2/3)

= (240/1) * (3/2)

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3 years ago
If ∠x= 55, then find the values of a, b, c and d
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8 0
3 years ago
Please HELP. ALSO WHY. 2 question. pLZZ
avanturin [10]

Answer:

1). Number of kids on the other side = 16

2). Brian took the time to each piece of pie = 20 seconds

Step-by-step explanation:

1). Let the number of kids on one side = x

  Then the number of kids on other side = 2x

  3 adults helped the side having number of kids = x, then the number of people on this side = x + 3

Since the total number of people on this side = 11

Then the equation will be,

x + 3 = 11

x = 11 - 3

x = 8

Then number of kids on the other side = 2x = 2×8

                                                                           = 16

2). By unitary method,

∵ Brian took the time to eat 6 pieces of the pie = 2 minutes

∴ Brian will take time to eat 1 piece of pie = \frac{2}{6} minutes

                                                                     = \frac{2}{6}\times 60 seconds

                                                                     = 20 seconds

6 0
3 years ago
Can someone please help
choli [55]

Answer:

(6, -4)

Step-by-step explanation:

If ABCD is dilated by a factor of 2, you multiply the coordinates by 2. For the coordinate D', you would multiply 3 by 2 to get 6 and you would multiply -2 by 2 to get -4. Answer: (6, -4)

3 0
3 years ago
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