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Romashka [77]
2 years ago
9

Please help!!!!!!!!!!!!!

Mathematics
2 answers:
Vadim26 [7]2 years ago
7 0

the square root of 121, because when rationalized its 11.

BaLLatris [955]2 years ago
3 0

square root 121

150 square root is 12.247....

98 square root is 9.899....

164 square root is 12.806....

when 121 is square root it’s 11 so square root 121 is the answer

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\pi {r}^{2} h
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The triangles are similar. If KL = 5, JL = 6, and PM = 9, find PN. Round to the nearest tenth.
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If the triangles are similar, then the corresponding ratio of their sides have equal ratios. Through ratio and proportion, we would determine the answer.

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A sweater is on sale for 75% of the original price of $44. Calculate the sale price.
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4 0
3 years ago
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An insurance company sells automobile liability and collision insurance. Let X denote the percentage of liability policies that
qaws [65]

Answer:

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Step-by-step explanation:

Given the joint cumulative distribution of X and Y as

F(x,y) = \frac{xy(x+y)}{2000000}\ \ \ \, \ 0\leq x100, 0\leq y\leq 100

#First find F_x and probability distribution function ,f_x(x):

F_x(x)=F(x,100)\\\\\\=\frac{100x(x+100)}{2000000}\\\\\\\\=\frac{100x^2+10000x}{2000000}\\\\\\=>f_x(x)=\frac{x}{10000}+\frac{1}{200}

#Have determined the probability distribution unction ,f_x(x), we calculate the Expectation of the random variable X:

E(X)=\int\limits^{100}_0 \frac{x^2}{10000}+\frac{x}{200}  dx \\\\\\\\=|\frac{x^3}{30000}+\frac{x^2}{400}|\limits^{100}_0\\\\=58.33\\\\

#We then calculate E(X^2):

E(X^2)=\int\limits^{100}_0 \frac{x^3}{10000}+\frac{x^2}{200}\ dx\\\\=\frac{x^4}{40000}+\frac{x^3}{600}|\limits^{100}_0=4166.67\\\\Var(X)=E(X^2)-(E(X))^2=4166.67-58.33^2\\\\Var(X)=764.28

Hence, the Var(X) is 764.28  

4 0
3 years ago
In △ABC,a=11 , b=20 , and c=28 . Find m∠A .
Helga [31]

Answer:

18.4°

Step-by-step explanation:

Use law of cosine.

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cos A = 0.949

A = 18.4°

4 0
3 years ago
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