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3 years ago

Indicate true or false as to weather the following equation is quadratic x(x^2+1)=0 true or false

1 answer:

5 0

$\bf x(x^2+1)=0\implies \stackrel{distributing}{x^3+x=0}\impliedby \textit{notice the }^3\textit{, is not quadratic, is \underline{cubic}}$

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Question progress<br> Homework Progress<br> The ratio 8:2 in its simplest form is

lidiya [134]

Answer:

4:1

Step-by-step explanation:

just divide by the highest numbe 2 in this case

6 0

3 years ago

I don't remember how to find x please help

alexandr1967 [171]

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3 0

3 years ago

The coefficient of 2(3)(6)Q is

Alik [6]

Answer:

36Q

Step-by-step explanation:

multiply all together we have 36Q

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1 year ago

For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp

Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

$\frac{1}{365}$

a) Probability that exactly 3 people have same birthday = $\frac{1}{365^3}$

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = $\frac{1}{365^3}$

Expected value of days = np = $\frac{1}{365^2}$

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0

3 years ago

Solve for x and then part b) find JL. Have no clue how to go about this

Igoryamba

9514 1404 393

Answer:

x = 4
JL = 16

Step-by-step explanation:

a) You go about this by using the given equation.

Left + Right = Total

JK + KL = JL

(2x -3) + 11 = 4x

8 = 2x . . . . . simplify, subtract 2x

4 = x . . . . . . divide by 2

b) JL = 4x = 4·4

JL = 16

8 0

2 years ago