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3 years ago

Help pleaseeeeeeeeeeeeee

Mathematics

1 answer:

sdas [7]3 years ago

6 0

The sales tax is $632.17

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Simplify the following expression. cot^2x secx-cosx

Solnce55 [7]

ANSWER

$\cos(x) \cot ^{2} (x)$

EXPLANATION

The given expression is;

$\cot^{2} (x) \sec(x) - \cos(x)$

Change everything to

$\sin(x)$

and

$\cos(x)$

This implies that,

$\frac{ \cos^{2} (x) }{ \sin^{2} (x) } \times ( \frac{1}{ \cos(x) } )- \cos(x)$

Cancel the common factors,

$\frac{ \cos(x) }{ \sin^{2} (x) } \times ( \frac{1}{1} )- \cos(x)$

$\frac{ \cos(x) }{ \sin^{2} (x) }- \cos(x)$

$\frac{ \cos(x) - \sin ^{2} (x) \cos(x) }{ \sin^{2} (x) }$

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

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

$= \cos(x) \cot^{2} (x)$

6 0

3 years ago

Solve the following quadratic function by utilizing the souare root method y=x2-1 x= = +[?] ]

klio [65]

Answer:

x = ±1

Step-by-step explanation:

We have to assume you want the solution for y = 0:

0 = x² -1

1 = x² . . . . . . add 1

±1 = x . . . . . . take the square root

x = ±1

7 0

2 years ago

pls help this is due soon (sorry for the drawing on the side, my brain goes like a thousand mph and i tend to draw instead of fo

slava [35]

Answer:

I don't have an answer and I am sorry but I am only in 6th grade so maybe get a tutor and an app that is good

3 0

2 years ago

Mary is twice as old as her brother Zane.Zane is four years less than twice as old as his cousin chase.If chase is 4 years old,h

zzz [600]

Answer:

Mary is 8 and that Zane and Chase are both 4 years old.

Step-by-step explanation:

For this equation, we will say Mary = M, Zane = Z, and Chase = C.

We will now convert the word problem into equations.

$2m = z, 2c - 4 = z, c = 4$

Now I will solve the equations by putting C into the equation.

$2(4) = 8, 2(4) - 4 = 4, c = 4$

So we can see that Mary is 8 and that Zane and Chase are both 4 years old.

7 0

3 years ago

Which of the following graphs correctly represents: (pictures)

Aloiza [94]

The correct answer is: [A]:
______________________________________________________
{The first graph that is shown among the answer choices provided}:
______________________________________________________
→ shows: " x ≤ 3 " ; as follows:
______________________________________________________

5 0

3 years ago