3 years ago

Please help me I have no idea what I'm doing :(

Mathematics

1 answer:

tatyana61 [14]3 years ago

3 0

Answer:

x = (-b ± √b² - 4ac)/2a

Step-by-step explanation:

You might be interested in

PLEASE HURRY write the equation of the inverse function y=1/2cos^-1(pix)-3

GaryK [48]

Answer:

$f^{-1}(x) = \frac{cos(2x+6)}{\pi }$

Step-by-step explanation:

$y = \frac{1}{2} cos^{-1} (\pi x)-3$

Firstly, we've to interchange the variables.

$x = \frac{1}{2} cos^{-1}(\pi y)-3$

Solving for y

$x = \frac{cos^{-1} \pi y}{2} -3$

Adding 3 to both sides

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

Multiplying 2 to both sides

$2(x+3) = cos^{-1} (\pi y)\\2x+6 = cos^{-1} (\pi y)$

Taking cosine on both sides

$\pi y = cos (2x+6)$

Dividing both sides by y

$y = \frac{cos(2x+6)}{\pi }$

Replace y by $f^{-1}(x)$

=> $f^{-1}(x) = \frac{cos(2x+6)}{\pi }$

4 0

3 years ago

Read 2 more answers

A coat is currently $139.99 it is going to be on sale for 30% off how much would you save

larisa86 [58]

Answer:

you would save $41.99

Step-by-step explanation:

(139.99)(.3)=41.99

this should be right, have a good day.

3 0

2 years ago

While on vacation in Mexico Jeremiah reads a distance marker that indicates he is 89 kilometers from Juárez.If 1mile is approxim

Monica [59]

Answer:

55.27 miles

Step-by-step explanation:

Hello, I think I can help you with this

you can easily solve this by using a simple rule of three

Step one

If 1 mile is approximately 1.61 kilometers,it is

1 miles ⇔ 1.61 Kilometers

the, how many miles(x) are 89 km?

x ⇔ 89 kilometers

the relation is

$\frac{1\ mile}{1.61\ km}=\frac{x}{89\ km} \\$

Step two

solve for x( isolating x)

$\frac{1\ mile}{1.61\ km}=\frac{x}{89\ km} \\\frac{1\ mile*89\ km}{1.61\ km}=x\\x=55.27\ miles$

55.27 miles

Have a good day

5 0

3 years ago

Anyone want to join a tournament in fort.nite im looking for players on brainly and putting them up against each other my You.Tu

ICE Princess25 [194]

Sure! :))))))))!!!!!

7 0

3 years ago

The oxygen atoms in carbon dioxide (CO2) form double bonds with the carbon atom, forming a linear molecule. Draw the structural

vodomira [7]

It would look like this: O=C=O

Hope this helps you out.

4 0

3 years ago

Please help me I have no idea what I'm doing :(​

Please help me I have no idea what I'm doing :(