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Marta_Voda [28]
3 years ago
11

Lena needs $50 to buy some notebooks. She had saved $2 and plans to work as a babysitter to earn $8 per hour. Which inequality s

hows the minimum number of hours, n, that Lena should work as a babysitter to earn enough to buy the notebooks?
2 + 8n ≤ 50, so n ≤ 6

8n ≤ 50 + 2, so n ≤ 6.5

8n ≥ 50 + 2, so n ≥ 6.5

2 + 8n ≥ 50, so n ≥ 6


Anyway I bored too......
Mathematics
1 answer:
defon3 years ago
3 0

Answer: the first equation

Step-by-step explanation:

Also I’m Tim

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(10.02)
melisa1 [442]

Answer:

sin O=\dfrac{3\sqrt{13}}{13}\\cos O=\dfrac{2\sqrt{13}}{13}\\tan O=\dfrac{3}{2}

Step-by-step explanation:

If the point (2,3) is on the terminal side of an angle in standard position.

Adjacent of O, x=2,

Opposite of O, y=3

Next, we determine the hypotenuse, r using Pythagoras Theorem.

Hypotenuse =\sqrt{Opposite^2+Adjacent^2} \\r=\sqrt{3^2+2^2} \\r=\sqrt{13}

Therefore:

sin O=\dfrac{Opposite}{Hypotenuse} \\sin O=\dfrac{3}{\sqrt{13}} \\$Rationalizing\\sin O=\dfrac{3\sqrt{13}}{13}

cos O=\dfrac{Adjacent}{Hypotenuse} \\cos O=\dfrac{2}{\sqrt{13}} \\$Rationalizing\\cos O=\dfrac{2\sqrt{13}}{13}

Tan O=\dfrac{Opposite}{Adjacent} \\tan O=\dfrac{3}{2}

4 0
3 years ago
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trasher [3.6K]

Answer:

I think B

Step-by-step explanation:

6 0
3 years ago
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3. If the expression 3x +10 is equal to 6 for some value of x, then what is the value of 3x+2 equal to for the same value of x?
Arada [10]

Answer:

-2 might be wrong

Step-by-step explanation:

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How many different 5-digit PIN codes are there that only include the digits 3, 4, 5, 6, 7, 8 and 9 if each of those digits is on
kipiarov [429]

Answer:

the number of ways to form a 5 digit pin using the given digits is 720

Step-by-step explanation:

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What comes after quintillion?
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