Answers
Answer:
-12 is correct
Step-by-step explanation:
hope this helps
Related Questions
the quotient of e plus 2 and 5 results in 4
Answers
Answer:
e + 2/ 5 = 4
Hope this helps, and be sure to report the answer that had a link
Step-by-step explanation:
The number of wrongly dialed phone calls you receive can be modeled as a Poisson process with the rate of one per month. For simplicity, assume there are four weeks in one month.
a. Find the probability that it will take between two and three weeks to get the first wrongly dialed phone call.
b. Suppose that you have not received a wrongly dialed phone call for two weeks. Find the expected value and variance of the additional time until the next wrongly dialed phone call.
Answers
Answer:
Part a: P (14/30<x<21/30) = 0.1304
Partb: Expected value= Variance= 0.866
Step-by-step explanation:
The poisson distribution is given by
P(x)= μˣ . e^ -u/ x!
In this question
x= 1
n= 30
μ= 1/30
P(x)= μˣ . e^ -u/ x!
= 0.333. e⁻¹/³⁰/1!
= 0.33*0.967/1
= 0.32208
For 2 weeks
x= 14
n= 30
μ= 14/30
P(x)= μˣ . e^ -u/ x!
= 0.467. e⁻¹⁴/³⁰/14!
= 0.467*0.627/14!
= 0.29285/14!
=3.359*e⁻¹²
= 0.0139
For 3 weeks
x= 21
n= 30
μ= 21/30
P(x)= μˣ . e^ -u/ x!
= 0.7* e⁻²¹/³⁰/21!
= 0.7*0.4965/21!
= 0.3476/21!
=6.8037*e⁻²¹
= 0.11648
Part a:
P (14/30<x<21/30) = P (x= 14/30) + P (x=21/30)
(0.0139 +0.11648) =0.1304
Part b:
Probability of Not receiving the call for two weeks = 1- P (x= 14/30)=0.9861
The mean and the variance of the Poisson distribution are equal to μ
For x= 14
Expected value not getting wrongly dialed phone call in 2 week = μ= 1-14/30 = 1-0.467= 0.533
Variance of not getting wrongly dialed phone call in 2 week= μ=1- 14/30= 1-0.467= 0.533
Expected value of the additional time until the next wrongly dialed phone call
Expected value not getting wrongly dialed phone call in 2 weeks + Expected value of next wrongly dialed phone call in a month
= 0.533+0.33=0.866
Variance of the additional time until the next wrongly dialed phone call
= Expected value of the additional time until the next wrongly dialed phone call =0.866
Amy plans to spend 1/4 of his next month's income on
rent, 1/12 on transportation, 1/6 on food, $590 on other
expenses, and save $925. How much does he plan to
spend on food?
Answers
9514 1404 393
Answer:
$505
Step-by-step explanation:
Assuming the listed expenses comprise all of Amy's income (x), we have ...
(1/4)x +(1/12)x +(1/6)x + 590 +925 = x
1515 = 1/2x . . . . . . subtract 1/2x
We note that 1/6x is for food. That amount is 1/3 of 1/2x, so the amount spent on food is ...
(1/6)x = (1/3)(1/2x) = (1/3)(1515) = 505
Amy plans to spend $505 on food.
Answer:
the answer is $505
Step-by-step explanation:
:))))
plssss help can i have a discord and call me plssss
Answers
Answer:
1/24
Step-by-step explanation:
SHAWTYYY THIRSTY
Answer:
21/24-20/24=1/24
Step-by-step explanation:
Make the denominators same by multiplying the fraction with a number that will make the denominators equal i.e 3 for first fraction and 4 for the second fraction.
PLS HELP QUICK! Thanks
Answers
Answer:
dddd
Step-by-step explanation:
Write an expression for "the sum of a and four".
Please help!!
10 POINTS
Answers
Answer5:
Step-by-step explanation:
Answer:
4+a=x
Step-by-step explanation:
sum means addition of two or more terms so if the sum of a and four is the question, I represented the result with x cause it is unknown but the question is. Thank you
what is the value of the expression below?
5/9 / 1 2/3 x 3 3/5
A: -1 1/5
B: 1 1/5
C:-1/3
D: -3 1/3
No links
Answers
Answer:
B) 6/5 or 1 1/5
Step-by-step explanation:
5/9 ÷ 5/3 × 18/5 = 5/9 × 3/5 × 18/5 = 6/5
These four numbers are plotted on a number line:
3
1
2 5
38
Which is the correct ordering on the number line, from right to left?
1
2
2
3
1
1
2
3
5'
2
3
3
5
8
5
3
2
5
1
2
Answers
Answer:
the correct ordering to the number line it is from left to the right
50 m
50 m
h
28 m
Find the area of the isoceles triangle.
The area is
square meters.
Answers
Answer:
700 m^2
Step-by-step explanation:
If the height is 28, and the base is 50, do the triangle area formula for the area.
1/2 28 * 50 = 14 * 50 = 700
Answer:
I believe it should be 700
Step-by-step explanation:
Formula: B times H times 1/2
the washington family is applying for a loan to purchase a new home, in order to qualify the must have a net worth greater than $100,000
Answers
Answer:
yes the answer is definitely C
how did you determine ray
Answers
Answer:
In naming a ray, we always begin with the letter of the endpoint (where the ray starts) followed by another point on the ray in the direction it travels. Since the vertex of the angle is the endpoint of each ray and our vertex is , each of our rays must begin with . Only fails to do so.
Answer:
A ray is a part of a line that has one endpoint and goes on infinitely in only one direction. You cannot measure the length of a ray. A ray is named using its endpoint first, and then any other point on the ray (for example, →BA ).
De los 648 lanzamientos que realizó Alberto, falló 513 ¿que porcentaje de lanzamientos fallidos tiene Alberto?
Answers
Helpppo meeeeeeeeeee
Answers
Answer:
1 grains equal to uwu kilograms
Step-by-step explanation:
homie literally just search it it's not that hard, 700 grams
20% of the 65 coffee mugs at Toby's Pancake House are dirty. How many dirty are there at the pancake house? pls answer asap for brainliest
Answers
Answer:
13
Step-by-step explanation:
20% of 65 = 0.2 * 65 = 13
You turn the 20% into a decimal 0.2 then you just do 0.2*65. = 13 and you get 13
What are the ordered pairs of the
solutions for this system of equations?
f(x) = x2 – 2x + 3; f(x) = -2x + 12
Answers
Answer:
Step-by-step explanation:
The median and mean scores for a math test are shown.
Which distribution of scores would best account for the difference in the median and mean?
Median Score: 82%
Mean Score: 70%
Answers
Answer:
A? I think
Step-by-step explanation:
Given f(x)=x^2−5x and g(x)=2x+1, find (f+g)(−3).
Answers
Answer:
19
Use the given functions to set up and simplify
Find a measure of the missing angle
G
H
K
M
Answers
Answer:
h = 65, g = 115, m = 49, k = 131
Step-by-step explanation:
h and 115 are supplementary angles, so 180 - 115 is 65 degrees.
g and 115 are vertical angles, so both should be 115 degrees.
m and 131 are supplementary angles, so 180 - 131 = 49 degrees.
k and 131 are vertical angles, so both should be 131 degrees.
The local scouting club is doing a car wash fundraiser. If
they charge $8 per car, which table below describes how much
they will earn for every 4 cars washed?
Answers
Answer:
Step-by-step explanation:
8x4 32
32 bucks
you start with the equation 15b=30 what steps should you take to find the quantity that equals 5b?a.multiply 30 by b b. multiply 30 by 3 c. divide 30 by 3
Answers
Answer:
First, divide 30 by 15
Step-by-step explanation:
15b = 30
15/15b = 30/15
b = 2
To determine the organic material in a dried lake ted, the percent carbon by mass is measured at two different locations. In order to compare the means of the two different locations, it must first be determined whether the standard deviations of the two locations are different.
Location1(%C) Location2(%C)
1 10.40 10.10
2 10.20 10.90
3 10.30 10.20
4 10.40 10.70
5 10.20 10.40
a-1. Far each location, calculate the standard deviation and report it.
- location 1: _____
- location 2: _____
a-2. What is the calculated F value for comparing the standard deviation?
b. Are the two standard deviations for the locations significantly different at the 95% confidence level?
A. yes.
B. No.
c. What is the calculated t value used to compare the means of these two locations?
d. Are the means for the two different locations significantly different at the 95% confidence level?
A. yes.
B. No.
Answers
Answer:
a-1.- location 1: =0.01- location 2: =0.113
a-2. F= 0.08849
b. A. yes.
c. t= -1.020
d. B. No.
Step-by-step explanation:
Location1(%C) Location2(%C)
x x² y y²
1 10.40 108.16 10.10 102.01
2 10.20 104.04 10.90 118.81
3 10.30 106.09 10.20 104.04
4 10.40 108.16 10.70 114.49
5 10.20 104.04 10.40 108.16
∑ 51.5 530.49 52.3 547.51
x`= ∑x/n1 = 51.5/5= 10.3; y`= ∑y/n2= 52.3/5= 10.46
Sx² = 1/n1-1[ ∑x² - (∑x)²/n1] = 1/4[ 530.49 - (51.5)²/5]
= 1/4[ 530.49 - 530.45] = 0.01
Sy² = 1/n2-1[ ∑y² - (∑y)²/n2] = 1/4[ 547.51 - (52.3)²/5]
= 1/4[ 547.51 - 547.058] = 0.113
F= Sx²/Sy²= 0.01/0.113= 0.08849
The critical region is F ≥ F(0.025) (5,5)= 7.15
and F ≤ 1/F(0.025) (5,5) = 1/7.15= 0.13986
Since the calculated value of F =0.08849 falls in the critical region we conclude that the two standard deviations for the locations significantly different at the 95% confidence level.
c. t= x1`-x2`/ sqrt ( s₁²/n₁ + s₂²/n₂)
t= 10.3-10.46/ sqrt( 0.01/5 +0.113/5)
t=- 0.16/0.15684
t= -1.020
d. The calculated value t= -1.020 does not fall in the the critical region
t (0.025) (4) = ±2.776 we conclude that the means for the two different locations are not significantly different at the 95% confidence level.
Each month, a phone company charges $20 for 500 minutes of talking time plus $0.45 for each additional minutes. Unlimited texting costs $30 more. Choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500
A. 0.45 + 50x
B. 50 + 0.45x
C. 30 + 20x
D. 500 + 50 + 0.45x
Someone please help on this question
Answers
Answer:B
Step-by-step explanation:If 500 minutes of talk = 20 and texting = 30 and each additional minute of talk = 0.45 then the bill would be (for B = total cost)
2 Which expression is equivalent to (29) ? 13 g12 qog
Answers
A sandwich shop sells sandwiches for $3.75 each, including tax.
The shop received a total of $90.00 from the sales of
sandwiches one afternoon.
Write an equation that can be used to determine the number
of sandwiches, x, sold by the sandwich shop that afternoon.
Answers
3.75 times x = 90
90 divided by 3.75= 24
mark brainliest if right
Can someone help me it would be the world if someone helped me and tysm for the person who helped me stay blessed <3
Answers
6 x 12 = 72.
Her sister has 72 stickers.
I WILL AWARD BRAINLIEST !!!!!urgent pls help!!!!!! the width of a pool table is x feet and the length is 3 feet longer than the width. write a polynomial A(x) to represent the area of the pool table. find a (4)
Answers
Answer:
28
Step-by-step explanation:
A(x) = x * (x + 3)
= x^2 + 3x
A(4) = 4^2 + 3(4)
= 16 + 12
= 28
Answer:
a(4)=4^2+3(4)
a(4)=16+12
a(4) =28 ft ^2
If AB is 150 then P equals?
Answers
Answer:
Wouldn't P be something less or equal to an acute angle? Try 75°.
Answer:
its 300∘ I got it right
The area (in square inches) of a rectangle is given by the polynomial function A(p) = p2 + 9p + 20. If the length of the rectangle is (p + 5) inches, what is the width?
Answers
Answer:
[tex]Width = p + 4[/tex]
Step-by-step explanation:
Given
[tex]Area = p^2 + 9p + 20[/tex]
[tex]Length = p + 5[/tex]
Required
Determine the width
The area of a rectangle is:
[tex]Area = Length * Width[/tex]
This gives:
[tex]p^2 + 9p + 20= (p+5)* Width[/tex]
Expand
[tex]p^2 + 4p + 5p + 20= (p+5)* Width[/tex]
Factorize
[tex]p(p + 4) + 5(p + 4)= (p+5)* Width[/tex]
[tex](p + 5) (p + 4)= (p+5)* Width[/tex]
Divide both sides by p + 5
[tex]p + 4= Width[/tex]
[tex]Width = p + 4[/tex]
2) What is the value of y?
A) 2 B) 10 C)9 D)12
(geometry)
Answers
Answer:
D) y = 12
Step-by-step explanation:
One can use the angle bisector theorem to solve this problem. The angle bisector theorem states:
[tex]\frac{a_1}{b}=\frac{a_2}{c}[/tex]
Where ([tex]a_1[/tex]) and ([tex]a_2[/tex]) are a part of the side that is intersected by the angle bisector and ([tex]b[/tex]) and ([tex]c[/tex]) are the other two sides in the triangle. Substitute in the given values and solve for the unknown.
[tex]\frac{4}{8}=\frac{6}{y}[/tex]
Simplify,
[tex]\frac{1}{2}=\frac{6}{y}[/tex]
Cross products,
[tex]12=y[/tex]
Given the function: f(x)=X^2+1
a) Find f(–6) b) Find f(8)
Answers
Answer:
a). the line doesn't go that far
b) -2.645, 2.645
Step-by-step explanation: