3 years ago

Which expression represents the distance between the two points, X and Y, on the number line

Mathematics

1 answer:

balandron [24]3 years ago

7 0

The expression representing the distance is
0

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Help please! I do not exactly understand how to do this. Thanks!

Radda [10]

X and Y are supplementary, that means X + Y = 180.

But we have, X = Y +24, then

X + Y = Y + 24 + Y = 2Y + 24 = 180

Then

2Y = 156

Y = 78

Then X = 78 + 24 = 102.

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3 years ago

Use a table to find the solution of 2t-1=11

Katarina [22]

I'm just guessing but if you subtract the 1 from 11 and divide by 2 on both sides then T would equal 5

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egoroff_w [7]

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2 years ago

Evalaute the following without using a calculator: <br> cos(13pi/6)

Harman [31]

$the\ cos\ function\ is\ periodic:\ \ \ the\ period=2 \pi\\\\cos(2 \pi + \alpha )=cos \alpha \\\\------------------------\\\\cos\bigg{(} \frac{\big{13 \pi }}{\big{6}}\bigg{)}=cos\bigg{(} 2 \pi +\frac{\big{ \pi }}{\big{6}}\bigg{)}=cos\bigg{(} \frac{\big{ \pi }}{\big{6}}\bigg{)}= \frac{\big{ \sqrt{3} }}{\big{2}}$