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4 years ago

I will give you brainly for the best and fastest answer

Mathematics

1 answer:

Natali [406]4 years ago

4 0

Replace y in the second equation with the value of Y from the first equation:

-x - 3 = 5

Add 3 to both sides:

-x = 8

Multiply both sides by -1:

x = -8

The answer is:

(-8,3)

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I need help proving this ASAP

Ket [755]

Answer:

See explanation

Step-by-step explanation:

We want to show that:

$\tan(x + \frac{3\pi}{2} ) = - \cot \: x$

One way is to use the basic double angle formula:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ \sin(x) \cos( \frac{3\pi}{2} ) + \cos(x) \sin( \frac{3\pi}{2}) }{\cos(x) \cos( \frac{3\pi}{2} ) - \sin(x) \sin( \frac{3\pi}{2}) }$

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ \sin(x) ( 0) + \cos(x) ( - 1) }{\cos(x) (0) - \sin(x) ( - 1) }$

We simplify further to get:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ 0 - \cos(x) }{0 + \sin(x) }$

We simplify again to get;

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{- \cos(x) }{ \sin(x) }$

This finally gives:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = - \cot(x)$

6 0

4 years ago

What is the equation of the line containing points (-4,3) and (7,5)

ki77a [65]

Use the slope formula and slope-intercept form
y=mx+b
to find the equation.
y=2/11x + 4/11

Hope this helps

3 0

3 years ago

I did 4 more problems than manuel if I dod p problems write an expression for how many manuel did

Pavlova-9 [17]

He did2.1less problems then u

5 0

4 years ago

Michel runs 6 miles in 50 minutes.<br>At the same rate , how many miles would he run in 35 minutes

Dominik [7]

the awser would be 3 i think

3 0

3 years ago

Read 2 more answers

The perimeter of a square is 75 inches. What is the length of one side of the square?

Sedbober [7]

Answer:

75 divided by 4... each side of the square is 18.75 inches long

5 0

3 years ago