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Kaylis [27]
3 years ago
15

Please help!! Simplify the expression. csc^2x-1/ 1 +sinx

Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0

Answer:

Step-by-step explanation:

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Which of the following are solutions to the equation sinx cosx = 1/4? Check all that apply.
N76 [4]
The solution is <span>B. π/12+nπ

</span>proof 
sinx cosx = 1/4 is equivalent to  2 <span>sinx cosx = 1/2 or sin2x =1/2
so 2x = arcsin(1/2) = </span>π/6 + 2nπ,  so x = π/12+nπ
8 0
3 years ago
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Caiden earned $475 from mowing lawns last summer. He deposited this money in an account that pays an interest rate of 3.8% compo
Korolek [52]

Caiden's balance after 5 years would be $831

<u>Explanation:</u>

Given:

Principal, p = $475

Rate of interest = 3.8%

time, t = 15 years

Balance after 15 years = ?

We know:

Amount, A = P(1+\frac{r}{n})^n^t

where,

n = number of compounding periods

r = rate of interest

t = number of years

Substituting the value;

A = 475(1+\frac{3.8}{100} )^1^5\\\\A = 831

Therefore, Caiden's balance after 5 years would be $831

5 0
3 years ago
PLEASE HELP! ( no random links )
yawa3891 [41]

Answer:

This is not a statistical question

Step-by-step explanation:

A statistical question is a question the gathers varying data

7 0
3 years ago
The CDC reported in 2012 that 1 in 88 American children had been diagnosed with an autism spectrum disorder (ASD).
gladu [14]

Answer:

Poisson Distribution , P(x<2) = 0.1446

Step-by-step explanation:

This is a binomial distribution question with

sample space, n = 300

probability of diagnosed with ASD, p = 1/88 = 0.0114

probability of not diagnosed with ASD, q = 1 - p = 0.9886

Mean, m is given as np = 300 * 0.0114 = 3.42

variance, v = npq = 300 * 0.0114 * 0.9886 = 3.38101

standard deviation, s = square root of variance = 3.38101^(0.5) = 1.83875

This binomial distribution can be approximated as Poisson Distribution since

n > 20 and p < 0.05

For a Poisson Distribution

P(X = x) = [e^(-m) * m^(x)]/ x!

b) x = 2

P(X < 2) = P(X = 0) + P(X = 1)

using the z score table and evaluating, we obtain

P(x<2) = 0.1446

4 0
3 years ago
What is 90 times 900
tangare [24]
90×900 is 81000 ☺☺☺☺☺☺
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3 years ago
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