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Mathematics

1 answer:

77julia77 [94]1 year ago

5 0

Here is the answer sis lol

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What is the value of n?

melamori03 [73]

The answer for this question that needs an answer is n = 5

because 18(n-1) = 9(n+7) implies that 18n - 18 = 9n + 63 which implies that n =5 for the equation to hold true.

6 0

2 years ago

the highest point in the state of Louisiana is Driskill Mountain. It rises 535 feet above sea level. Write the elevation of Dris

steposvetlana [31]

The highest point in the state of Louisiana is Driskill Mountain. It rises 535 feet above sea level. Write the elevation of Driskill Mountain as an integer

5 0

3 years ago

Read 2 more answers

Prove : (sec θ - tan θ )^2 = 1 - sin θ /1+sin θ

labwork [276]

$(sec x - tan x)^2 \\ \\ = sec^2x - 2 sec x tan x + tan^2 x \\ \\ =(1+tan^2 x) - 2 sec x tan x +tan^2 x \\ \\ =1 - 2 sec x tan x + 2 tan^2 x \\ \\ = 1 - 2tan x(sec x - tan x) \\ \\ =1 - \frac{2 sin x}{cos x} (\frac{1-sin x}{cos x}) \\ \\ = 1 - \frac{2 sin x (1-sin x)}{cos^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{1-sin^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{(1-sin x)(1+sin x)} \\ \\ =1-\frac{2 sin x}{1+sin x}$

3 0

2 years ago

What is the domain of the function represented by the graph?

dezoksy [38]

Answer: Choice C. $x \ge -3$

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Explanation:

The domain is the set of all allowed x inputs.

Here we see that x = -3 is the smallest x value possible as it is from the left-most point. The graph goes on forever to the right, so there is no largest x value. Effectively infinity is the largest x value even though infinity is not a number.

We can say the domain is $-3 \le x < \infty$ which can be simplified to $-3 \le x$ or $x \ge -3$

In short: x can be -3 or larger.

8 0

2 years ago

Factor f(x) = 4x^2 − 5x − 21

jeka94

Answer:

x = -7/4, 3

Step-by-step explanation:

Use quadratic formula

4 0

3 years ago