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3 years ago

6

the time required to drive a certain distance verified inversely with the speed R if it takes 2 hours to drive the distance at 3

0 miles per hour how long will it take to drive the same this is at 50 miles per hour

1 answer:

vodomira [7]3 years ago

8 0

3 hours
Because the count of time is
t

The count of speed is
R

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Please help for brainliest answer

erma4kov [3.2K]

Answer:

874.6

Step-by-step explanation

Profit = Sales - Costs

Profits by day:

Mon:

225 - (225*0.12) -9 = 189.0

Tue

260 - (260*0.12) -9 = 219.9

Wed

230 - (230*0.12)-9 = 193.4

Thu

180 - (180*0.12) - 9 = 149.4

Fri

150 - (150*0.12) -9 = 123.0

Total:

189+219.9+193.4+149.4+123 = 874.6

6 0

4 years ago

A rectangular box is x feet long and x feet wide. The volume of the box is (4x8 + 3x6) cubic feet. What polynomial represents th

andreev551 [17]

$V=length\times width \times height\\\\\dfrac{V}{length\times width}=height\\\\\dfrac{4x^{8}+3x^{6}}{x^{2}}=height\\\\height=4x^{6}+3x^{4}$

5 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

1. The distance you travel varies directly with the amount of gas you use. You can travel 300 miles on 12 gallons of gas.

Ratling [72]

Answer is in the attachment

5 0

3 years ago

Read 2 more answers

Simplify (3x – 5) + (5x + 1).

Andrej [43]

Answer:

(-2x - 6)

Step-by-step explanation:

The given expression is ( 3x - 5 ) - ( 5x + 1 )

We have to simplify the given expression

First we will open the bracket having negative notation outside.

( 3x - 5 ) - 5x - 1

3x - 5 - 5x - 1

Now we will collect the similar terms together.

3x - 5x - 5 -1

-2x - 6

So the simplified form of the expression is (-2x - 6)

7 0

3 years ago

Read 2 more answers