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olya-2409 [2.1K]
2 years ago
10

Calculating a rate of change

Mathematics
1 answer:
algol [13]2 years ago
4 0

Answer:

2 1

Step-by-step explanation:

im not sure what the last one is

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Find the exact value of Cos 240 degrees without a calculator. Show your work!
VMariaS [17]

it equals <span>(−<span>12</span>)</span> because <span><span>cos<span>(<span>60∘</span>)</span></span>=<span>12</span></span>

Explanation:

The reference angle for <span>240∘</span> is <span>60∘</span> (since <span><span>240∘</span>=<span>180∘</span>+<span>60∘</span></span>)

<span>60∘</span> is an angle of one of the standard triangles with 
<span><span>cos<span>(<span>60∘</span>)</span></span>=<span>12</span></span>

<span>240∘</span> is in the 3rd quadrant so (either by CAST or noting that the "x-side" of the associate triangle is negative)
<span><span>cos<span>(<span>240∘</span>)</span></span>=−<span>cos<span>(<span>60∘</span>)</span></span></span>

<span><span>cos<span>(<span>240∘</span>)</span></span>=−<span><span>12</span></span></span>

6 0
3 years ago
Help plz, asap!
Montano1993 [528]

Answer:

1 I think but you said they all have the same area

3 0
2 years ago
Read 2 more answers
What is G if B = A × (1+G)T and B = 3,455, A = 1,969, and T = 8? Answer as a rate in decimal format so that 12.34% would be ente
zubka84 [21]

Answer:

G=0.0728

Step-by-step explanation:

The expression given is:

B=A*(1+G)^T

This expression has the format of a compounded interest at a rate G for a time T. If B = 3,455, A = 1,969, and T = 8, the value of the rate G is determined by:

3,455=1,969*(1+G)^8\\G = \sqrt[8]{\frac{3,455}{1,969}}-1\\G=0.0728

The rate G is 0.0728.

7 0
3 years ago
What is the square root of 600
dmitriy555 [2]

Answer:

24.495 if they want it as a radical, it would be positive or negative radical 600.

Step-by-step explanation:

6 0
2 years ago
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Pls dont give just the answer, (you dont need to explain how to do it)
Alik [6]

Answer: 72

Step-by-step explanation: volume of a pyramid = v= lwh/3

v= 6*6*6/3

v = 216/3

v = 72

5 0
2 years ago
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