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alex41 [277]
3 years ago
15

Hello help if u dont know dont even try to comment.​

Mathematics
1 answer:
aniked [119]3 years ago
6 0

Answer:

distance = 8.35 inch

Step-by-step explanation:

here's your solution

=> scale is , 1 inch = 20 feet

=> distance between room in feet = 167 feet

=> so, distance in inch = 167/20

=> distance = 8.35 inch

hope it helps

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Solve the equation for all real values of x.<br> cosxtanx - 2 cos x=-1
IceJOKER [234]

Solution to equationcosxtanx - 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 equationcosxtanx - 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} .

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3 years ago
How do I reduce bigger fractions step by step?
Ulleksa [173]
You do it be dividing the numerator and denominator by the same number, but you have to make sure the divide into whole numbers

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Jose has a policy with $50,000 PIP (Personal Injury Protection) coverage. He causes an
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Answer: $7200

Step-by-step explanation:

Given

The policy covers the damage of $50,000 PIP

He injured 10 people including himself

The total cost of injuries is $72,000

The cost per person is $7200

The company only pays for the damaged bear by the policyholder, not by the others.

\therefore the company only pays $7200 in coverage.

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WILL MARK BRAINLIEST IF GOTTEN RIGHT
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Answer:

85

Step-by-step explanation:

Dont need to explain it quik mafs

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Suzanne can work 10 math problems in 15 minutes. How many can she work in an hour and a half?
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135 problems
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