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Pani-rosa [81]
3 years ago
15

Please answer this with full explanation.

Mathematics
2 answers:
Andrews [41]3 years ago
4 0

Answer:

I do not know

Step-by-step explanation:

mafiozo [28]3 years ago
3 0

If 5x = sec(θ) and 5/x = tan(θ), then x = sec(θ)/5 and 1/x = tan(θ)/5.

Then

5 (x² - 1/x²) = 5 ((sec(θ)/5)² - (tan(θ)/5)²)

… = 5 (sec²(θ)/25 - tan²(θ)/25)

… = sec²(θ)/5 - tan²(θ)/5

Recall that

sec²(θ) = 1 + tan²(θ)

Then

5 (x² - 1/x²) = (sec²(θ) - tan²(θ))/5 = 1/5

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Please answer I’ll rate brainlyest
12345 [234]

Answer:

5P3*6C4=60*15=900

Step-by-step explanation:

5P3 refers to the permutations of 5 items taken 3 at a time. To evaluate this, we use factorials as follows;

5P3=\frac{5!}{(5-3)!}

The factorial of an integer n is evaluated as;

n!=n*(n-1)*(n-2)*(n-3).......3*2*1

Using this concept, the above expression can now be simplified as follows;

5P3=\frac{5!}{2!}=\frac{5*4*3*2!}{2!}=5*4*3=60

Therefore, the permutations of 5 items taken 3 at a time is 60.

The next expression, 6C4 refers to the combinations of 6 items taken 4 at a time. The simplification utilizes similar concepts of permutations since we shall be involving factorials;

6C4=\frac{6!}{4!(6-4)!}=\frac{6!}{4!*2!}=\frac{6*5*4!}{4!*2*1}=\frac{6*5}{2*1}=15

Therefore, the combinations of 6 items taken 4 at a time is 15.

The final step is to evaluate the product;

5P3*6C4=60*15=900

3 0
3 years ago
If you answer this i will give you the BRAINLIEST Pls answer Asap
Eva8 [605]

Answer:

You know that negative 3 1/2 is the lowest number so you would put that first. The greatest number would be the coldest in Celsius, and 1/20 would be the last question (the sea level) if calculations are correct, you would get full credit.

5 0
2 years ago
Please! I need help!
topjm [15]

Answer:

2^1×2^3

2^8×2^−5

2^1×2^2

Step-by-step explanation:

7 0
3 years ago
Please help me ☺️☺️☺️☺️☺️☺️☺️☺️☺️☺️☺️☺️☺️
Olegator [25]
Two complementary angles make a total of 90, so 3x+6x=90, x=10
5 0
3 years ago
Read 2 more answers
Which is the solution to the inequality? 2 3/4 < b-8/15
VLD [36.1K]

Answer:

Step-by-step explanation:

2 3\4 < b-8/15

add 8\15 to both sides

2 3\4 + 8\15 < b

3 0
3 years ago
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