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3 years ago

PLEASE HELP!!!! Liner equations & graphs!!! Can someone please help me with this.

Mathematics

1 answer:

Alexxandr [17]3 years ago

4 0

Answer:

It would be A

Step-by-step explanation:

Since the starting amount was $11 you would look how much it was for 2 rides and subtract 17-11 than that is 6 so for two rides it is 6 dollars extra. So than for 1 ride you would divide 6 by 2 and get 3.

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Can someone help me with this. (Convert the repeating decimal to a fraction show all your work)

marta [7]

Answer:

you cannot convert a repeating decimal into a fraction

Step-by-step explanation:

3 0

3 years ago

There are 48 chicken farms near an ohio town.if each farm has 9 barns, how many total barns are there? answers

Schach [20]

48•9=432
There are 432 barns

8 0

3 years ago

When dividing by a mixed number, which should you do first?

Serggg [28]

Answer: Change each mixed number to an improper fraction.

Step-by-step explanation:

6 0

3 years ago

Solve the equation for all real values of x.<br> cosxtanx - 2 cos x=-1

IceJOKER [234]

Solution to equation $cosxtanx - 2 cos^2 x=-1$ for all real values of x is $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$ .

<u>Step-by-step explanation:</u>

Here we have , $cosxtanx - 2 cos^2 x=-1$ . Let's solve :

⇒ $cosxtanx - 2 cos^2 x=-1$

⇒ $cosx(\frac{sinx}{cosx}) - 2 cos^2 x=-1$

⇒ $sinx = 2 cos^2 x-1$

⇒ $sinx = 2 (1-sin^2x)-1$

⇒ $sinx = 1-2sin^2x$

⇒ $2sin^2x+sinx-1=0$

By quadratic formula :

⇒ $sinx = \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

⇒ $sinx = \frac{-1 \pm \sqrt{1^2-4(2)(-1)} }{2(2)}$

⇒ $sinx = \frac{-1 \pm3}{4}$

⇒ $sinx = \frac{1}{2} , sinx =-1$

⇒ $sinx = sin\frac{\pi}{6} , sinx = sin\frac{3\pi}{2}$

⇒ $x=\frac{\pi}{6} , x=\frac{3\pi}{2}$

But at $x=\frac{3\pi}{2}$ we have equation undefined as $cos\frac{3\pi}{2}=0$ . Hence only solution is :

⇒ $x=\frac{\pi}{6}$

Since , $sin(\pi -x)=sinx$

⇒ $x=\pi -\frac{\pi}{6} = \frac{5\pi}{6}$

Now , General Solution is given by :

⇒ $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$

Therefore , Solution to equation $cosxtanx - 2 cos^2 x=-1$ for all real values of x is $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$ .

3 0

3 years ago

What is the value of x in the equation 8 + 4 = 2 (x -1)

melisa1 [442]

Answer: x=7

Step-by-step explanation:

8 + 4 = 2(x - 1) combine like terms on the left side

12 = 2(x -1) Distribute on the right side

12 = 2x - 2 Add 2 to both sides

+2 +2

14 = 2x Divide both sides by 2

x= 7

8 0

3 years ago