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2 years ago

If a=1, b = 2 and c=-3, find the value of 4a3b2

Mathematics

1 answer:

Greeley [361]2 years ago

8 0

Answer:

Step-by-step explanation:

(4*1)(3*2)*2

4*6*2

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Turn 20/12 into a mixed number

luda_lava [24]

Answer:

1 2/3

Step-by-step explanation:

well first reduce it which would be 5/3 since the greatest common denominator would be 4. Then put 3 in the 5 which goes only once and 2 is left over. Keep the threeas the denominator instead of the numerator.

3 0

2 years ago

An insurance company sells automobile liability and collision insurance. Let X denote the percentage of liability policies that

qaws [65]

Answer:

-764.28

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

The price of a new car is $29990.if the sales tax rate is 6.5 percent,then how much sales tax is being charged? What is the tota

rusak2 [61]

The total sales tax being charged is: $1, 949. 35.
The total cost for the car including tax is: $31, 939. 35

Hope this helps! Let me know if you need help with anything else! :)

5 0

3 years ago

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Can u help me with number 1

Snezhnost [94]

The answer is 2.07 I hope this helps. can I have brainliest

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3 years ago

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The sum of the first 10 terms of a linear sequence is 5 and the sum of the next 10 terms is 215. Find the sequence.

Misha Larkins [42]

Answer: