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3 years ago

15

write the following using algebraic notation, using the letter x for any unknown numbers. i think of a number, double it, then a

dd 9

1 answer:

iren [92.7K]3 years ago

3 0

Answer:

2x+9

Step-by-step explanation:

I hope this helps :)

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A tortoise can reach speeds of 0.12 m/s. Work out the speed of a tortoise in

Free_Kalibri [48]

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yous should multiply it by 3.6;

0.12*3.6=0.432 km/h

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3 years ago

Round <br> 0.99999999<br> to four decimal places?

natali 33 [55]

1.0000!

if this is rigtht please give brainliest, if you need an explication let me know :)

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3 years ago

Carlos is saving money to buy a new Nintendo Switch game. He has $25. After he receives his allowance (n), he will have $45. Whi

irga5000 [103]

Answer He needs to wait to get his allowance twice.

Step-by-step explanation:

The average price of a game is around 45$. If Carlos gets 25$ a week its only 2 weeks to get a game. in other words: 2x25: 45

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4 years ago

Sin(θ) cos(3θ) + cos(θ) sin(3θ) = 0

pychu [463]

$\displaystyle\\
\text{We use formula:}\\
\sin(\alpha+\beta)=\sin(\alpha)\cos(\beta)+cos(\alpha)\sin(\beta)\\\\
Resolve:\\\\
\sin(\Theta)cos(3\Theta)+cos(\Theta)sin(3\Theta)=0\\\\
\sin(\Theta+3\Theta)=0\\\\
\sin(4\Theta)=0\\\\
\text{We have two solutions:}\\\\
4\Theta=0~~\Longrightarrow~~\Theta=\frac{0}{4}=0~~\Longrightarrow~~ \boxed{\Theta_1=0+2k\pi}\\\\
4\Theta=\pi~~\Longrightarrow~~\Theta=\frac{\pi}{4}~~\Longrightarrow~~ \boxed{\Theta_2=\frac{\pi}{4}+2k\pi}\\\\$

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3 years ago

Hey y'all! i gotta know this ASAP! lmk if you know the answer

satela [25.4K]

Answer:

9

Step-by-step explanation:

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3 years ago

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