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LuckyWell [14K]
3 years ago
5

Please awnser and make sure it is right I will brainlist

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
3 0

Answer:

Step-by-step explanation:

The answer you have chosen is incorrect. This is derived from the Pythagorean Identity:

sin^2x+cos^2x=1 If we manipulate this and get the 1 over by the sin and then move the cos over, we would have

sin^2x-1=-cos^2x

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Hi. I'm kind of confused on this question. Pls help
Musya8 [376]

Answer:

B is the awnser.

Step-by-step explanation:

cuz it is incorrect.

7 0
3 years ago
A vending machine operator has determined that the number of candy bars sold per week by a certain machine is a random variable
docker41 [41]

Answer:

The answer is below

Step-by-step explanation:

Let Y represent the profit per day, and x represent the number of bar sold per day. Hence:

Y = 0.25x - 2

a) The mean is given as:

\mu_y=E(Y)=E(0.25X-2) = 0.25E(X)-2\\\\But\ E(X)=mean\ of\ machine=125. Hence:\\\\E(Y)=0.25(125)-2=29.25\\\\E(Y)=\$29.25

b) The standard deviation of y is:

\sigma_y=var(0.25X-2)\\\\\sigma_y=0.25\sigma(X)\\\\but\ \sigma_X=7,hence:\\\\\sigma_y=0.25(7)=1.75\\\\\sigma_y=\$1.75

6 0
3 years ago
This should be easy but I wanna be sure. I say A or D.
Nimfa-mama [501]

Answer:

B) 14 - 2i

Step-by-step explanation:

m + n = 10 + i + 4 -3i = 14 -2i

7 0
3 years ago
Which expression is equivalent to 3(4y)<br> I WILL MARK BRAINLIEST
Anastaziya [24]

Answer:

Step-by-step explanation:

Well 12y is the most obvious answer.

Anything that makes 12 is good enough.

4(3y) is another answer

12(y)

1(12y)

6(2y)

2(6y

7 0
3 years ago
If N/8+6=58, then N equals?
GaryK [48]
N equals <em>416</em>

Hope this helps!

8 0
3 years ago
Read 2 more answers
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