Answer:
Step-by-step explanation:
We are given that 30% of California residents have adequate earthquake supplies.
a) Ramon variable X denotes the number of the california residents that have adequate earthquake insurance
B) x can take value 1 ,2 ,3 ......
C)The distribution of random variable is geometric distribution with parameter p=0.3
The pmf of geometric distribution is
[tex]P(X=x)=0.3(1-0.3)^{x-1} , x=1,2,3...[/tex]
D)P(X=1) or P(X=2)=P(X=1)+P(X=2)
P(X=1) or P(X=2)=[tex]0.3(1-0.3)^{1-1}+0.3(1-0.3)^{2-1}=0.51[/tex]
E)
[tex]P(X \geq 3)=1-P(X<3)\\P(X \geq 3)=1-(P(X=1)+P(X=2))\\P(X \geq 3)=1-0.51\\P(X \geq 3)=0.49[/tex]
F)
[tex]E(X)=\frac{1}{p}[/tex]
p is the resident who does not have adequate earthquake supplies.
p = 1-0.3 = 0.7
[tex]E(X)=\frac{1}{0.7}=1.42[/tex]
G)[tex]E(X)=\frac{1}{q}=\frac{1}{0.3}=3.33[/tex]
how many centimeters are in 4.8 inches?
[1 inch = 2.5 cm]
a. 12 cm
b. 11 cm
c. 7.30 cm
d. 1.92 cm
Answer:
A.
Step-by-step explanation:
Answer:
a.12
Step-by-step explanation:
4.8x2.5=12
The cost of a pair of pants was reduced from $50 to $40. By what percent did the cost of the pair of pants decrease? 2% 10% 20% 40%
Answer:
C. 20%
Step-by-step explanation:
50*2=100
40*2=80
100-80=20
A percentage is a number or ratio that represents a fraction of 100.
The percentage decrease in the cost of the pair of pants is 20%.
What is a percentage?A percentage is a number or ratio that represents a fraction of 100.
Example:
50% = 50/100 = 1/2
10% = 10/100 = 1/10
25% = 25/100 = 1/4
20% = 20/100 = 1/5
We have,
The initial cost of pair of pants = $50
The final cost of pair of pants after reduced = $40
The percentage decrease in the cost of pair of pants:
= [( Initial cost - Final cost ) / Initial cost] x 100
= [(50 - 40) / 50] x 100
= (10/50) x 100
= 20%
Thus,
The percentage decrease in the cost of the pair of pants is 20%.
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Which expression is equivalent to 18 - 7?
A. -18 + 7
B. 18+ (-7)
C. 18 + 7
D. -18 +(-7)
Answer:
B
Step-by-step explanation:
The Equivalent Expression is 18+ (-7)
What are Integers?Integers come in three types:
Zero (0)Positive Integers (Natural numbers)Negative Integers (Additive inverse of Natural Numbers)Given:
18 - 7
Using Integers
a- b can be written as a+ (-b)
So, 18 - 7
= 18+ (-7)
Hence, the Equivalent Expression is 18+ (-7)
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48x3 +128x2 − 75x − 200 factor
Any natural number and “0” means?
Answer:
Whole numbers
Step-by-step explanation:
Since natural numbers are any whole number excluding zero.
Answer:
This really confuses me, but it should be a whole number. I mean, right?
On the graph Y= -3x+4?
Answer:
1,1
Step-by-step explanation:
Divide.
1/3 divided by 1/6
Answer:
The answer is 2.
Step-by-step explanation:
Hope that helped! Have a brainly day! :D
Answer:
2
Step-by-step explanation:
take the SECOND fraction and use its reciprocal (so 1/6 is now 6/1). Then, multiply across. so 1 x 6 and 3 x 1. Now you have 6/3. Lastly, you divide 6 by 3 and you're all done!
pls help me i dont know how to do this pls answer ASAP
Answer:
If it does not pass through the origin, or is anything other than linear, it is not proportional
1.) Non-proportional
2.) Proportional
3.) Non-proportional
4.) Non-proportional
5.) Proportional
6.) Proportional
7.) Non-proportional
10.) Non-proportional
11.) Non-proportional
Answer:
Step-by-step explanation:
N means Non-Proportional
P means Proportional
1.N
2.P
3.N
4.N
5.P
6.N
7.N
10.N
11.N
answer for immediate brainliest
Answer:
3
Step-by-step explanation:
Write your answer with a positive exponent only.
Answer:
1/z
Step-by-step explanation:
(z^-6)/(z^-5)
=[(z^(-6+5)]
=z^-1
=1/z
SOMEONE PLEASSEEEE HELP
The greatest common factor of 60w 5y 3 and 78wy 2 is _____
6w y^2
6w^5 y^3
13w^5 y^3
2w y^2
The answer fam is...... 6wy^2
Can someone help me plz
In the pic
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)
Zoe was given a box of assorted chocolates for her birthday. Each nigill,
herself to some chocolates. Zoe ate 4 chocolates each night and after 3 nights, there
were 12 chocolates remaining in the box. Write an equation for C, in terms oft,
representing the number of chocolates remaining in the box t days after Zoe's
birthday.
Answer:
c=-3t+30
Stay safe
The expression for the number of chocolates remaining will be c = 24 - 4t.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that, Zoe was given a box of assorted chocolates for her birthday. Each night, she to some chocolates. Zoe ate 4 chocolates each night and after 3 nights, there were 12 chocolates remaining in the box.
Let the number of days be represented by t, and the number of chocolates will be C.
The total number of chocolates will be calculated as,
Total = 3 x 4 + remaining chocolates = 12
Total = 3 x 4 + 12
Total = 12
The expression will be written as,
C = 24 - 4t
Therefore, the expression for the number of chocolates remaining will be c = 24 - 4t.
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-2.73= -0.42r
please answer
Answer:
Today: Thursday, 15 October 2020
Hour: 04.17 WIB (in Indonesian)
____________________________
-2.73 = -042r
r = -2.73/0.42
r = 6.5
Answer:
r = 13/2
hope this is grateful
Solve this system:
2x+5y+z=3
x-3y+2z=2
-x+2y-3z=-7
Answer:
x= -3
y= 1
z= 4
Step-by-step explanation:
Please see the attached pictures for the full solution.
*I evaluated the determinants using Sarrus' rule (see last picture):
∆= aei +bfg +cdh -gec -hfa -idb
*The symbol '∆' (delta) is usually used to denote a determinant.
What place value is 3 in 452,341
The place value of 3 is hundred
plz mark as brainliest
Solve 6z + 10v = 30 for v
Answer:
[tex]v=\frac{3\left(-z+5\right)}{5}[/tex]
Step-by-step explanation:
im too good no ty
<3
Red
Question 7 of 10
A birthday cake was cut into equal pieces, and six pieces were eaten. The
fraction below shows how many pieces are left. According to the fraction,
how many pieces were not eaten?
ოთ
o
A. 3
B. 15
C. 6
O D. 9
Answer:
Huh...?
Step-by-step explanation:
Answer:
Need to know the fraction
Step-by-step explanation:
Use the following stem-and-leaf plot to answer the question.
What is the median?
The median of the stem-and-leaf plot is 23
The hypotenuse of an isosceles right triangle has length 4. How long is each leg?
Answer:
you know 2 sides are the same on an a silly triangle.. I mean isosceles.. so the hypotenuse will be longer but the other two sides are the same
use [tex]C^{2}[/tex] = [tex]A^{2}[/tex] + [tex]B^{2}[/tex] ( Pythagoras theorem )
Step-by-step explanation:
[tex]4^{2}[/tex] = [tex]A^{2}[/tex] +[tex]A^{2}[/tex] ( b/c the side are the same length the can both be called A )
16 = 2[tex]A^{2}[/tex]
8 = [tex]A^{2}[/tex]
[tex]\sqrt{8}[/tex] = A
not a whole number but.. it's still a good answer square root of 8 is about 2.8284 on my calculator
Many states run lotteries to raise money. A website advertises that it knows "how to increase YOUR chances of Winning the Lottery." They offer several systems and criticize others as foolish. One system is called Lucky Numbers. People who play the Lucky Numbers system just pick a "lucky" number to play, but maybe some numbers are luckier than others. Let's use a simulation to see how well this system works. To make the situation manageable, simulate a simple lottery in which a single digit from 00 to 99 is selected as the winning number. Any value can be picked, but for this exercise, pick 1 as the lucky number. What proportion of the time do you win
Complete question is;
Many states run lotteries to raise money. A website advertises that it knows "how to increase YOUR chances of Winning the Lottery." They offer several systems and criticize others as foolish. One system is called Lucky Numbers. People who play the Lucky Numbers system just pick a "lucky" number to play, but maybe some numbers are luckier than others. Let's use a simulation to see how well this system works. To make the situation manageable, simulate a simple lottery in which a single digit from 0 to 9 is selected as the winning number. Any value can be picked, but for this exercise, pick 1 as the lucky number. What proportion of the time do you win?
Answer:
10%
Step-by-step explanation:
We are told that To make the situation manageable, simulate a simple lottery in which a single digit from 0 to 9 is selected as the winning number.
This means the total number of single digits that could possibly be a winning one is 10.
Since we are told that only 1 can be picked, thus;
Probability of winning is; 1/10 = 0.1 or 10%
Frank and Erica are selling ribbons to raise money for the football team. The graph shows the linear relationship between the number of ribbons each of them has left to sell and the number of days that they have been selling ribbons.
On which day does it appear that Frank and Erica will have the same number of ribbons left to sell
Answer:
Step-by-step explanation:
It would be day 18
I need help finding the slope, The y-intercept, and the equation??
Help please fast!!!!
1.
The factored form of a quadratic function is f(x)=(x-p)(x-q).The standard form of a quadratic function is fX)=ax^2+bx+c. The factored
form for a quadratic function tells us the x-intercepts of the quadratic function, while the standard form for a quadratic function tells us they
intercept of the quadratic function.
If p=2 and q=-3, use what you have learned about multiplying polynomials to
1) write the factored form of the quadratic function f(x)
2) write the standard form for the quadratic function f(x)
Answer:
(1) f(x)=(x-2)(x-3)
(2) f(x)=x²-5x+6
Step-by-step explanation:
(1) f(x)=(x-p)(x-q)
f(x)=(x-2)(x-3)
(2) f(x)=x²-3x-2x+6
f(x)=x²-5x+6
The Baldwin family walked 4/5 of a mile in 4/9 of an hour. What is their unit rate in miles per hour?
1. four -ninths over four-fifths = four over nine mile per hour
2. four-fifths over four-ninths = one and four-fifths miles per hour
3. four-ninths over four-fifths = one and four-fifths miles per hour
4. four-fifths over four-ninths = four over nine mile per hour
Answer:
They went 1 4/5 mph or 1.8 mph.
Step-by-step explanation:
Hope this helps!
Name the property that the statement illustrates.
If ZABC - ZDEF and ZDEF ZGHI, then ZABC - ZGHI.
Answer:
Transitive property
Step-by-step explanation:
It statea that if a=b and b=c, then a=c.
Please help me, hurry, I need help.
Answer: A) yes; -2/3
Step-by-step explanation: -2/3, -4/6 = -2/3, -6/9 = -2/3
is 14.23 a irrational or rational number
Answer:
Rational
Step-by-step explanation
It can only be irrational if it repeated, but this one doesn't so it is rational.
Hope that helped
Identify all sets to which this number belongs: -459*
Natural, Whole, Integer
Whole, Irrational
Whole, Integer
Integer, Rational
Irrational
Please help!
Answer:
-459 is rational, and an integer
The slope of the line below is -8/7.
Answer:
A
Step-by-step explanation: