Ask question

Ask question

All categories

IrinaVladis [17]

3 years ago

6

Juan bought a gift for his friend. He wants to place the gift in a package with the length of 8 inches, width of 7 inches, and t

he height of 3 inches. Then wants to wrap the git. What Is the surface area of the package?

1 answer:

creativ13 [48]3 years ago

3 0

266 is the answer

hope u saw this in time

You might be interested in

10 to the 5th power plus 10 to the -1 power

Serggg [28]

1000000+1/10. There are no rules for when you add the powers.

8 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 6(2b-4) when b=5

Gnom [1K]

Answer:

36

Step-by-step explanation:

6(2b-4)

Let b = 5

6(2 (5)-4)

Work inside the parentheses out

6(10-4)

6(6)

36

6 0

3 years ago

Read 2 more answers

A unit rate is a rate in which the _ in the comparison is 1 unit.

Nikitich [7]

Answer:

3.1415967382

Step-by-step explanation:

7 0

3 years ago

Which situation is most likely to have a constant rate of change?

Sauron [17]

Answer:

D

Step-by-step explanation:

D because the number of runs is consistent with the number of innings.

8 0

3 years ago