Answer:
The standard deviation of the number of dogs who weigh 65 lbs or more is 1.83.
Step-by-step explanation:
Let X represent the number of adult Australian sheep dogs weighing 65 pounds or more.
It is provided that the probability of occurrence of X is, p = 0.40.
A sample of n = 14 adult dogs is studied.
Each dog's weight is independent of the others.
The random variable X follows a Binomial distribution.
The standard deviation of a Binomial distribution is:
[tex]\sigma=\sqrt{np(1-p)}[/tex]
Compute the standard deviation of the number of dogs who weigh 65 lbs or more as follows:
[tex]\sigma=\sqrt{np(1-p)}[/tex]
[tex]=\sqrt{14\times 0.40(1-0.40)}\\\\=\sqrt{3.36}\\\\=1.83303\\\\\approx 1.83[/tex]
Thus, the standard deviation of the number of dogs who weigh 65 lbs or more is 1.83.
What is the value of x in f(x)=x/3-1/6,when f(x)=0.5
‼️ASAP!!! BRAINLIEST!!‼️
PLS HELP!!! SHOW ALL WORK +STEPS!! Thx!
Answer:
y=-3/4+7
Step-by-step explanation:
slope formula is y2-y1 over x2-x1
4-7/4-0=
-3/4
and line intercepts at 7
Luis, Carlo, and Ken bought movie
tickets. Each ticket cost the same
amount. The 3 tickets cost $21. How
much did Carlo pay for his ticket?
Use a model to justify your answer.
Ned took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional 10 points for answering a bonus question correctly. How many points did Ned receive or lose overall?
Answer:
Ned lost 14 points.
Step-by-step explanation:
How many points lost: 24 (6*4)
How many points added: 10
He lost 24 points, but gained back 10. So, Ned really only lost 14 points overall.
Simplify the expression!
3/4(z+2/5)+2z =?
thank you for your help btw!!
The solution of the expression is (55z + 6 ) / 20.
What is an expression?Expression in maths is defined as the relation of numbers variables and functions by using mathematical signs like addition, subtraction, multiplication and division.
Given that the expression is 3/4(z+2/5)+2z. The expression will be solved as below,
E = 3/4(z+2/5)+2z
E = 3/4( z + 2 / 5 ) + 2z
E = 3/4 ( 5z + 2) / 5 + 2z
E = ( 15z + 6 + 40z ) /20
E = (55z + 6 ) / 20
Therefore, the solution of the expression is (55z + 6 ) / 20.
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Can you Please help me. With this
What is f(g(x)) when f(x) = x ^ 2 + 5 , and g(x) = 10 - 5x ?
A function f (x) and g (x) then:
(f + g) (x) = x² - x + 6
Further explanation
Like the number operations we do in real numbers, operations such as addition, installation, division or multiplication can also be done on two functions.
Suppose a function f (x) and g (x) then:
(f + g) (x) = f (x) + g (x)
(f + g) (x) is a new function of the sum of f (x) and g (x)
Likewise with other function operations:
(f-g) (x) = f (x) - g (x)
(fg) (x) = f (x) x g (x)
(f / g) (x) = f (x) / g (x)
In addition to the above operations we can combine two functions using the function composition with the symbol o
(fog) (x) = f ((g (x))
Known on the question
f (x) = x² + 1
g (x) = 5 x
Summing the two functions f (x) and g (x):
(f + g) (x) = f (x) + g (x)
(f + g) (x) = x² + 1 + 5 - x
(f + g) (x) = x² - x + 6
Wanda's homework was to find 73% of $400
A tape diagram. 0 dollars is 0 percent. Question mark dollars is 73 percent. 400 dollars is 100 percent. (7.3) (400) = 2,920. 73 percent of 400 dollars is 2,920 dollars.
What error did Wanda make?
O None. Wanda’s work is correct.
O Wanda converted the percent to a decimal incorrectly. It should be 0.073.
O Wanda converted the percent to a decimal incorrectly. It should be 0.73.
O Wanda has the wrong label. It should be hours, not dollars.
btw im asking these questions for people who doesnt have these questions
Answer: C because she went back to im just trying to help the team out
Answer:
(C) wanda converted the percent to a decimal incorrectly. it should be 0.73.
I answer (C) and it was correct.
Step-by-step explanation:
Give the other person brainliest ↑↑
hope it helps
Are y = -5x + 2 and y = 5x – 3 parallel, perpendicular or neither?
A.Parallel
B.Perpendicular
C.Neither
Answer:
parallel is the answer
4. Calculate the probability that an officer is promoted given that the officer is a man. 5. Calculate the probability of a promotion given that the officer is a woman
Answer:
4. Probability of being promoted given the officer is a man = 0.3
5. Probability of a promotion given that the officer is a woman = 0.15
Note: The data table is found in the attachment below
Step-by-step explanation:
Probability = number of required outcomes/ number of possible outcomes
4. Probability of being promoted given the officer is a man
Probability of being promoted given the officer is a man = number of men promoted/total number of men
From the table, total number of men = 960
number of men promoted = 288
Probability of being promoted given the officer is a man = 288/960 = 0.3
5. Probability of a promotion given that the officer is a woman
Probability of a promotion given that the officer is a woman = number of women promoted/total number of women
From the table, total number of women = 240
number of women promoted = 36
Probability of a promotion given that the officer is a woman = 36/240 = 0.15
4) u= 6a + 2b, for a
What is the solution for A?
Answer:
a = (u-2b)/6
Step-by-step explanation:
First get a by itself by subtracting 2b from both sides:
u-2b = 6a
Then isolate the variable by dividing both sides by six:
(u-2b)/6 =a
A total of 910 tickets were sold for 5 dance
performances. What was the average number
of tickets sold for each performance?
Answer:
182
Step-by-step explanation:
910/5=182
Verbal contracts are generally discouraged because
a. there are usually no witnesses to a verbal contract
b. without a physical signature, they can be very difficult to enforce
C.unlike in a written contract, people can easily lie in a verbal contract
d. verbal contracts usually lack the detail necessary to produce a formal contract
Answer:
B: Without a physical signature, they can be very difficult to enforce
Step-by-step explanation:
Edge 12/7/2020
Generally, verbal contracts are often discouraged because: B. it is difficult to enforce without a physical signature.
What is a Verbal Contract?verbal contract, which can also be referred to as a parol contact, is a contract that is expressed by just words of promise or historically, and can be recognized by the courts.
However, unlike written contracts that a signature must be appended to, verbal contract are generally discouraged because: B. it is difficult to enforce without a physical signature.
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10( x+1/2)=3x+5+7x
Please help
Answer:
All real numbers are solutions
Step-by-step explanation:
10(x + 1/2) = 3x + 5 + 7x
~Distribute left side
10x + 5 = 3x + 5 + 7x
~Combine like terms
10x + 5 = 10x + 5
~Subtract 5 to both sides
10x = 10x
~Divide 10 to both sides
x = x
~Subtract x to both sides
0 = 0
Best of Luck!
A scientist has a 10 pound alloy
Answer:
good for him
Step-by-step explanation:
Brainliest Plzzz!!!
Answer:
Is this free points? well thx! if u actually need help let me know
Step-by-step explanation:
Brainliest please
9.5 -9.45 suntract and decimales
Answer:
its 0.05
Step-by-step explanation:
Help ASAP). Graph the function: Look at the picture for the problem. Brainliest Answer. Show me points of graph paper so I can see
[tex]the \: points \: are: \\ (−1, \: 0) \\ (1, \: 2) \\ (4, \: 2)
\\
Step-by-step \: explanation: \\ \\
f(x) = x + 1 \: ....if \: x < 0 : \iff \: ( - 1, \: 0) \\ if \: x = - 1 \: then \: y = 0\\ \\ f(x) = 2 \: ....if \: 0 . \leqslant x \leqslant 1 :\: \iff( 1, \: 2) \\if \: x = 1\: then \: y = 2. \\ \\ f(x) = x\: ....if \: x > 1 : \: \iff( 2, \: 2) \\ if \: x=2 \: then \: y=x=2.[/tex]
♨Rage♨
How many is (+5) --(692)+1/3%
Answer:
730.3
Step-by-step explanation:
hope this helps.
PLease help. will give brainliest to right answer
Answer:
the second bubble, [tex]\frac{1}{6^{2} }[/tex]
Step-by-step explanation:
[tex]6^{-2}[/tex] = [tex]\frac{1}{6^{2} }[/tex]
Answer:
1/6^2
the second one
Step-by-step explanation:
1. replace a with 6:
6^-2 6 to the power of negative two
2. solve;
when you have something to the power of a negative number, it gets smaller, so think: what is 6^2? (six to the power of two) That is 36. As a fraction, that would be 36/1. Since the 2 is negative, flip it to get 1/36.
1/6^2 and 1/36 are equal since 6^2 = 36
Hope this helps :)
A mechanic charges $55 for an engine check and $25 per hour foe his services. Which of the following is a linear model of his charges
Answer:
y=25x+55. $55 is a one-time fee while the $25 is per hour
HELP ASAP
Help me figure this out I need to do it fast
Answer: (1,4) (2,8) (3,12)
Step-by-step explanation:
The graph of which of the following equations contains the point (-3,0)?
A
x+y=3
B.
-x - y=-3
C. x-y=3
D. x+y=-3
Answer:
you need help kd
Step-by-step explanation:
help please asap lol
Answer:
The measure of angle F is 78°.
The measure of an angle in standard position is given. Find two positive angles and two negative angles that are coterminal with the given angle. (Enter your answers as a comma-separated list.)
Answer:
The answer is below
Step-by-step explanation:
Let us assume the angle is -π/4.
Coterminal angles are angles that have the same initial side and terminal side. They are angles in standard position (angles with the initial side on the positive x -axis) that have a common terminal side.
Positive coterminal angles are gotten by adding 360° if the angle is in degrees or 2π for angles in radian while negative coterminal angles are gotten by subtracting 360° if the angle is in degrees or 2π for angles in radian.
Positive coterminal angle = -π/4 + 2π = 7π/4, 7π/4 + 2π = 15π/4
Positive coterminal angle = 7π/4, 15π/4
Negative coterminal angle = -π/4 - 2π = -9π/4, -9π/4 - 2π = -17π/4
Negative coterminal angle = -9π/4, -17π/4
A softball pitcher has a 0.487 probability of throwing a strike for each pitch. If the softball pitcher throws 29 pitches, what is the probability that no more than 14 of them are strikes? Insert the correct symbol to represent this probability.
Answer:
P(x≤14) = 0.556
Step-by-step explanation:
Given:
Probability of throwing a strike (p) = 0.487
Total number of throw (n) = 29
Find:
Probability that no more than 14 of them are strikes P(x≤14)
Computation:
Mean(np) = (29)(0.487)
Mean(np) = 14.123
Standard deviation = √[mean( 1- p)]
Standard deviation = √[14.123( 1 - 0.487)]
Standard deviation = 2.6917 (Approx)
P(X < x) = P[(Z < (x - mean)]/[Standard deviation])
P(x≤14) = P(Z < (14.5 - 14.123) / 2.6917 )
P(x≤14) = 0.556
There is a rope it is divided into three piece it is divided into a ratio of 2 to 3 to 4 the biggest piece is 16 . What is the length of the original rope .
Answer:
I think the answer is 25.
Step-by-step explanation:
All you need to do is add up all the numbers
also aren't you in college!!!!A decision maker is interested in estimating a population proportion. A sample of size n150 yields 115 successes. Based on these sample data, construct a 90% confidence interval estimate for the true population proportion. A. (0.714, 0.826) B. (0.717, 0.823) C. (0.750, 0.790) D. (0.737, 0.803)
A. (0.714, 0.826)
Step-by-step explanation:
Given that:
The sample size n = 150
The number of success(sample proportion) x = 115
The population proportion [tex]\hat p[/tex] = [tex]\dfrac{x}{n}[/tex]
The population proportion [tex]\hat p[/tex] = [tex]\dfrac{115}{150}[/tex]
The population proportion [tex]\hat p[/tex] = 0.767
At 90% confidence interval level;
[tex]Z_{\alpha /2} = Z_{0.05} = 1.645[/tex]
Thus, the confidence interval estimate for the true population proportion can be computed by using the formula:
[tex]=\hat p \ \pm \ z_{\alpha /2} \sqrt{\dfrac{\hat p(1- \hat p)}{n} }[/tex]
[tex]= 0.767 \ \pm 1.645 * \sqrt{\dfrac{0.767(1- 0.767)}{150} }[/tex]
[tex]= 0.767 \ \pm 1.645 * \sqrt{\dfrac{0.767(0.233)}{150} }[/tex]
[tex]= 0.767 \ \pm 1.645 * \sqrt{\dfrac{0.178711}{150} }[/tex]
[tex]= 0.767 \ \pm 1.645 * \sqrt{.0011914}[/tex]
[tex]= 0.767 \ \pm 1.645 * 0.03452[/tex]
[tex]= 0.767 \ \pm 0.0568[/tex]
= (0.767 - 0.0568, 0.767 + 0.0568)
= (0.7102 , 0.8238 )
Due to approximation; the confidence interval estimate for the true population proportion is [tex]\simeq[/tex] (0.714, 0.826)
A bag contains 42 cups of dog food. Your dog eats 2 1/3 cups of dog food each day. How many days does the bag of dog food last?
Answer:
18 days
Step-by-step explanation:
2 1/3 just 7/3. Next, divide 42 by 7/3 which is just 42/1 times 3/7 which gives you 18.
A copy machine can print 480 copies every 4 minutes. A teacher printed 720 copies. How long did it take to print?
Answer:
10 min.
Step-by-step explanation:
Answer:
6 minutes
Step-by-step explanation:
Pack of 50 stickers costs 4.50 what the uniy price
