How to work this problem must show work. n-2

1 answer:

3 0

I am only guessing that you mean:

(n-2)/-3<7 if so, multiply both sides by -3 (and reverse the direction of the inequality sign because of negative mulitplication!)

n-2>-21 add 2 to both sides

n>-19

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Help! If you know this can you tell me how to do it?

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

Here's how this works:

Get everything together into one fraction by finding the LCD and doing the math. The LCD is sin(x) cos(x). Multiplying that in to each term looks like this:

$[sin(x)cos(x)]\frac{sin(x)}{cos(x)}+[sin(x)cos(x)]\frac{cos(x)}{sin(x)} =?$

In the first term, the cos(x)'s cancel out, and in the second term the sin(x)'s cancel out, leaving:

$\frac{sin^2(x)}{sin(x)cos(x)}+\frac{cos^2(x)}{sin(x)cos(x)}=?$

Put everything over the common denominator now:

$\frac{sin^2(x)+cos^2(x)}{sin(x)cos(x)}=?$

Since $sin^2(x)+cos^2(x)=1$ , we will make that substitution:

$\frac{1}{sin(x)cos(x)}$

We could separate that fraction into 2:

$\frac{1}{sin(x)}$ × $\frac{1}{cos(x)}$

$\frac{1}{sin(x)}=csc(x)$ and $\frac{1}{cos(x)}=sec(x)$

Therefore, the simplification is

sec(x)csc(x)

5 0

3 years ago

the sears tower in chicago is 1450 feet hugh. a model if the tower is 24 inches tall. what is the ratio of the height of the mod

VladimirAG [237]

1 foot = 12 inches

Therefore:

2 feet = 24 inches

------------------

2 feet x 725 = 1450 feet

------------------

The real tower is 725 times taller than the actual model.

Ratio:

725 : 1

4 0

2 years ago

Read 2 more answers

Help me with this urgent due in 5 min

solniwko [45]

Answer:

The last option

Step-by-step explanation:

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