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3 years ago

Solve for x: Sin(2x-15)=Cos(x-12)

Mathematics

1 answer:

Archy [21]3 years ago

7 0

<span>$\mathrm{Periodicity\:of}\:\sin\left(2x-15\right)+\cos\left(x-12\right):\quad2\pi$</span>

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The circumference of a circle is 6 inches. What is the area of the circle?

Lubov Fominskaja [6]

Answer:

(B) 9π in²

Step-by-step explanation:

I’m going to assume that by 6 inches you meant 6π inches.

If the circumference of a circle is 6π inches, then it’s radius will be half of 6 (because the circumference of a circle is $2\pi r$ ).

$6\div2=3$

So the radius is 3.

Now that we know the radius, we can find the area by using the equation $\pi r^2$ .

$\pi 3^2\\\pi9\\9\pi$

Hope this helped!

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2 years ago

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Write the rational number as a decimal. Show your work. 5/9 -3/8 -3/11.

Bad White [126]

I have memorized facts about fractions like these, so can tell you ...

$\dfrac{5}{9}=0.5\overline{5}\\\\-\dfrac{3}{8}=-3\times 0.125=-0.375\\\\-\dfrac{3}{11}=-0.27\overline{27}$

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A fraction with 9 as a denominator is a repeating 1-digit decimal with the decimal digit being the numerator of the fraction.

A fraction with 11 as a denominator is a repeating 2-digit decimal with the two digits being 9 times the numerator of the fraction.

1/8 = 0.125, so any multiple of 1/8 is that multiple of 0.125.

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2 years ago

I don’t know how to do this and my teacher doesn’t know how to teacher please help me

AnnyKZ [126]

Answer:

Yeah and i don't know how to answer that sorry

Step-by-step explanation:

you can't look it up some how?

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2 years ago

What would be the solution to this problem

lozanna [386]

Angle A: 60 degrees
Angle B: 30 degrees
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3 years ago

What is the 4th equivalent fraction to <br> 5/6

Lady bird [3.3K]

Answer:

20/24

Step-by-step explanation: Hope this helps

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1 year ago