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Whitepunk [10]
2 years ago
6

Cho hai mệnh đề p, q như sau:

Mathematics
1 answer:
Ivahew [28]2 years ago
5 0

Answer:

Step-by-step explanation:

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Jessica works at a nearby electronics store. She makes a commission of 9% on everything she sells. If she sells a laptop for $37
Cloud [144]
You have to do 0.09 x 378.00 and you will get 34.02.

So basically the answer is 34.02
6 0
3 years ago
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If cos x=8/17, and 270° &lt; x &lt; 360°<br> what is cos(2x)?
svp [43]

Answer:  \bold{-\dfrac{161}{289}}

<u>Step-by-step explanation:</u>

Given: cos x = \dfrac{8}{17}, x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

8² + y² = 17²    

      y² = 17² - 8²

      y² = 289 - 64

      y² = 225

      y = 15

→    sin x = -\dfrac{15}{17}

Use the double angle formula to find cos (2x):

cos (2x) = cos^2 x - sin^2 x\\\\.\qquad=\bigg(\dfrac{8}{17}\bigg)^2-\bigg(-\dfrac{15}{17}\bigg)^2\\\\\\.\qquad=\dfrac{64}{289}-\dfrac{225}{289}\\\\\\.\qquad=-\dfrac{161}{289}

             

8 0
3 years ago
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HELP PLEASEEE WITH EXPLANATION PLEASEEE
Volgvan
Ziad is 30 and marc is 10
4 0
3 years ago
Which translation rule describes the translation that is 2 units to the left and 8 units down?
lisov135 [29]

Answer: (x,y) → (x - 2, y - 8)

Step-by-step explanation:

Two units to the left would mean decreasing value on the x-axis, making it -2.

Eight units down would, again, mean decreasing value on the y-axis, making it -8.

Therefore, (x,y) → (x - 2, y - 8) is the correct translation rule.

I hope this helps :)

I get it, Geometry can be pretty difficult sometimes... I'm in it right now lol

8 0
2 years ago
A computer store bought a program at a cost of ​$20 and sold it at a selling price of ​$25. Find the percent markup.
lions [1.4K]

i dont know, sorry...............................................

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3 years ago
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