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2 years ago

Find the perimeter of a triangle with sides 2x+ 3,5x+8+x and 7x-2

Mathematics

2 answers:

Alexxx [7]2 years ago

8 0

2x+3+5x+8+x+7x-2=
15x-9

Perimeter= 15x-9

lidiya [134]2 years ago

3 0

To find the perimeter:

First, add all the sides together and find x

2x + 3 + 5x + 8 + x + 7x - 2 = 15x + 9

15x + 9 is your answer (for you cannot simplify it anymore)

hope this helps

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In 2004, Pen Hadow and Simon Murray walked 680 miles to

Mademuasel [1]

Answer:

The average number of daily miles traveled by these individuals was 11.72 miles per day.

Step-by-step explanation:

Given that in 2004, Pen Hadow and Simon Murray walked 680 miles to the South Pole, and the trip took 58 days, to determine the average number of miles traveled per day by these individuals the following mathematical calculation must be performed:

680/58 = X

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2 years ago

What is the decimal value of cos X?<br> (Round the answer to the nearest thousandth if necessary.)

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Answer:

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Step-by-step explanation:

It has been a long time since I've done this, so I hope it is correct:

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3 years ago

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Answer:

Step-by-step explanation:

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2 years ago

Factorise the following expressions 5x^2-25xy

Natali [406]

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Step-by-step explanation:

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2 years ago

(x+16)²=12 plz help me and show work

Readme [11.4K]

Answer:

The answer is $x=-16$ ± $2\sqrt{3}$ in exact form or $x=-12.535898$ , $x=-19.464102$ in decimal form.

Step-by-step explanation:

To solve this problem, start by moving all terms to the left side of the equation and simplify. Simplify the equation by subtracting 12 from both sides of the equation and squaring $x+16$ , which will look like $x^{2} +32x+256-12=0$ . Next, simplify the equation again, which will look like $x^{2} +32x+244=0$ .

Then, use the quadratic formula to find the solutions. The quadratic formula looks like $\frac{-b(+-)\sqrt{b^{2}-4ac } }{2a}$ .

For this problem, the quadratic variables are as follows:

$a=1$

$b=32$

$c=244$

The next step is to substitute the values $a=1$ , $b=32$ , and $c=244$ into the quadratic formula and solve. The quadratic formula will look like $\frac{-32(+-)\sqrt{32^2-4(1*244)} }{2*1}$ . To simplify the equation, start by simplifying the numerator, which will look like $x=\frac{-32(+-)4\sqrt{3} }{2*1}$ . Then, multiply 2 by 1 and simplify the equation, which will look like $x=-16(+-)2\sqrt{3}$ . The final answer is $x=-16$ ± $2\sqrt{3}$ in exact form. In decimal form, the final answer is $x=-12.535898$ , $x=-19.464102$ .

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2 years ago