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postnew [5]
3 years ago
7

Please explain, worth 20 points Question 8, by the way

Mathematics
2 answers:
choli [55]3 years ago
8 0
I think the answer is J. I'm not entirely sure though. You might want to get an expert in here LOL I'm pretty sure the answers J though.
earnstyle [38]3 years ago
4 0
The answer would be f because you have to do the amount of sketch pads * the amount they cost then the paintbrushes and their cost and the box of chalk and their cost. Then you add them all together because it is the simplified version of adding together 2.99 plus 2.99 plus 2.99 plus 2.99 plus 2.99 plus 5.99 plus 5.99 plus 15.99 = whatever it equals.
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3 years ago
Find the values of x and y. Pls helpI’m helpless at math
Svetradugi [14.3K]

Answer:

  • x = 1
  • y=\frac{\sqrt{3}}{2}  

Step-by-step explanation:

From the given right-angle triangle

The angle = ∠60°

  • The adjacent to the angle ∠60° is 1/2.
  • The opposite to the angle ∠60° is y.

The hypotenuse = x

<u>Determining the value of x:</u>

Using the trigonometric ratio

cos 60° = adjacent / hypotenuse

substituting adjacent = 1/2 and hypotenuse = x

cos\:60^{\circ }=\:\:\frac{\frac{1}{2}}{x}

\cos \left(60^{\circ \:}\right)=\frac{1}{2x}

\frac{1}{2}=\frac{1}{2x}          ∵ cos (60°) = 1/2

2x=2

Dividing both sides by 2

\frac{2x}{2}=\frac{2}{2}

Simplify

x=1

Thus, the value of hypotenuse x is:

x = 1

<u>Determining the value of y:</u>

Using the trigonometric ratio

sin 60° = opposite / hypotenuse

As we have already determined the value of hypotenuse x = 1

substituting opposite = y and hypotenuse = 1

sin 60° = y/1

y = 1 × sin 60°

y=\frac{\sqrt{3}}{2}       ∵  \sin \left(60^{\circ \:}\right)=\frac{\sqrt{3}}{2}

Therefore, the value of y is:

y=\frac{\sqrt{3}}{2}      

Summary:

  • x = 1
  • y=\frac{\sqrt{3}}{2}    
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50 pairs of whole numbers
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Up or down and maximum or minimum
just olya [345]
Down and maximum I think I know down is right for sure but I’m not sure about the other one
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