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Svetach [21]
2 years ago
9

in a certain school of 200 students ,the students can study french,spanish,,both or neither . Just as many study both as study n

either .One quarter of those who study spanish also study french.The total number who atudy french is 10 fewer than those who study spanish only .what percent of student study french only​
Mathematics
1 answer:
kipiarov [429]2 years ago
4 0

Answer:

1900

Step-by-step explanation:

i took the est

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Problem Page Question An urn contains black and pink balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all balls drawn from the urn are pink? Round your answer to three decimal places.

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3 years ago
Verify that (cos²a) (2 + tan² a) = 2 - sin² a....<br>​
Sveta_85 [38]

Trigonometric Formula's:

\boxed{\sf \ \sf \sin^2 \theta + \cos^2 \theta = 1}

\boxed{ \sf tan\theta = \frac{sin\theta}{cos\theta} }

Given to verify the following:

\bf (cos^2a) (2 + tan^2 a) = 2 - sin^2 a

\texttt{\underline{rewrite the equation}:}

\rightarrow \sf (cos^2a) (2 + \dfrac{sin^2 a}{cos^2 a} )

\texttt{\underline{apply distributive method}:}

\rightarrow \sf 2 (cos^2a) + (\dfrac{sin^2 a}{cos^2 a} ) (cos^2a)

\texttt{\underline{simplify the following}:}

\rightarrow \sf 2cos^2 a  + sin^2 a

\texttt{\underline{rewrite the equation}:}

\rightarrow \sf 2(1 - sin^2a )  + sin^2 a

\texttt{\underline{distribute inside the parenthesis}:}

\rightarrow \sf 2 - 2sin^2a   + sin^2 a

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Hence, verified the trigonometric identity.

7 0
2 years ago
Read 2 more answers
6. Describe how we could conduct a simulation to decide whether a simple random sample from this population could produce a samp
BigorU [14]

Step-by-step explanation:

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To conduct simulation, let's assume experiment is to be done 10 times

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2 years ago
Choose Yes Or no to indicate wether the percent and the fraction represent the same amount.
romanna [79]

Answer:

1, yes

2, no

Step-by-step explanation:

6 0
2 years ago
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My question is what's <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7D%7B5%7D%20%20%3D%20%20%5Cfrac%7B2%7D%7B2.5%7D%20
Reptile [31]
Hi, I'd be glad to help you with this equation. 

The answer is (x = 4) 

Hope this helps. 
Have a great day!
6 0
3 years ago
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