I need help on this question ASAP im in school ill give you 80 points.

Mathematics

2 answers:

UNO [17]3 years ago

7 0

Remark
Interesting way to teach this problem. I'll see if I can make a table that answers the question as it is presented.

Now all you need do is collect the nine terms from the table and put the like ones together if there are any.

Arada [10]3 years ago

3 0

I have included the answer in the picture provided below:

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brian irons \dfrac29 9 2 start fraction, 2, divided by, 9, end fraction of his shirt in 3\dfrac353 5 3 3, start fraction, 3,

julsineya [31]

At this rate, Brian plans 10/162 of his shirt.

The speed for which Brian iron the shirts is given by

$\frac{2}{9}/\frac{18}{5} = \frac{x}{1}$

Cross multiply to get

$\frac{2}{9} =\frac{18}{5}x$

Multiply both sides by 5/18 to solve for x.

$\frac{10}{162} = \frac{5}{31}$

At this rate, Brian plans 10/162 of his shirt.

learn more Cross multiply :brainly.in/question/34341065

20817

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2 years ago

Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

$cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}$

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, <span>cos(3pi/4)sin(3pi/4) = -1/2</span>