Answer:
Step-by-step explanation:
There are 4 kings in a deck of playing cards.
There are 52 cards in a deck.
So the probability is 4 out of 52.
Which is 4/52,
Which can be reduced to 1/13.
4 divided by 4 = 1 and 52 divided by 4 =13.
At the book fair, Vald spends all of his money on new books. Pamela spends
2/3 as much as Vald. Eli spends 4/3 as much as Vald. Who spent the most?
The least?
Step-by-step explanation:
Lets take Vald spends $100 on the book fair which are all the money he had.
Pamela Spends 2/3 as much as Vald
Pamela Spends 2/3 x 100 = $66.67
Eli Spends 4/3 as much as Vald
Eli spends 4/3 x 100 = $133.33
From here, we can see Eli Spends the most and Pamela Spends the least.
A computer engineer is investigating whether the amount of installed RAM (random access memory) can be used to predict the mean cost of a laptop with the operating system. The computer engineer collected a sample of 20 laptops with the same operating system. The engineer wants to estimate the mean change in the cost, in dollars, for each increase of 1 gigabyte of installed RAM. Assuming the conditions for inference have been met, which of the following inference procedures is the most appropriate for such an investigation?
a. A two-sample z-interval for a difference between proportions.
b. A two-sample t-interval for a difference between means.
c. A matched-pairs t-interval for a mean difference.
d. A one-sample t-test for means.
e. A linear regression t-interval for slope
Find AB. Round the answer to the nearest tenth if needed.
9514 1404 393
Answer:
8
Step-by-step explanation:
The product of segment lengths to the near and far circle intersection points is the same for both "secants". AD is a tangent, so the two intersection points are the same point. This gives ...
AD² = AB·AC
144 = AB(AB +10)
We can add 25 to complete the square.
169 = (AB +5)² . . . write as a square
13 = AB +5 . . . . . . positive square root
8 = AB . . . . . . . . . .subtract 5
what is a good communication
Answer:
text or video calls
Step-by-step explanation:
Answer: Employers value employees who can communicate effectively;
Step-by-step explanation: it means they are able to listen to others, as well as successfully relay their own ideas and opinions.
Which expression is equivalent to 8x - 12y + 32
Answer:
C
-16(0.5x-0.75y+2)
Step-by-step explanation:
I got it right on edge 2022 Hope it helps <3
Janie ordered boxed lunches for a student advisory committee meeting. Each lunch costs $4.25. The total cost of the lunches is $53.75, including a $7 delivery fee.
Part A
Which equation will help you find x, the number of boxed lunches Janie ordered?
a 4.25x = 60.75
b 4.25 + 7x = 53.75
c 4.25x + 7 = 53.75
d 4.25(x + 7) = 53.75
Part B
Solve the equation from Part A to find x.
x = _____
Answer:
Part A: c. 4.25x+7=53.75
Part B: 11
Step-by-step explanation:
4.25x+7=53.75
4.25x=46.75
x=11
find the gcf of 2³×3² and 2³×3⁴ please no links
Answer:
Step-by-step explanation:
GCF - List out the prime factors that are common to both numbers
2³ * 3²
2³ * 3⁴
GCF = 2³ * 3² = 8 *9 = 72
please help! find the key info for the graph given
23. In the figure, A, B, E and C are points on the circle.
AE is the diameter of the circle and AD is the height
of ABC.
Given that CAD = 18°, find BAE.
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Answer:
18°
Step-by-step explanation:
Angle ACD is the complement of the 18° angle shown, 72°. Arc AB is double that measure, so is 144°. Arc BE is the supplement to that, so is 36°. This is the arc subtended by inscribed angle BAE. That inscribed angle is half the measure of arc BE, so is 36°/2 = 18°.
angle BAE = 18°
write an expression which represents
6 more than x?
Answer:
x+6
Step-by-step explanation:
Two Social Security numbers (see Exercise 8.12) match zeros if a digit of one number is zero iff the corresponding digit of the other is also zero. In other words, the zeros in the two numbers appear in exactly the same position. For example, the Social Security numbers 120-90-1109 and 430-20-5402 have matching zeros.
Prove: Given a collection of 513 Social Security numbers, there must be two that match zeros.
Answer:
Proved
Step-by-step explanation:
From the given parameters, we have:
[tex]n = 9[/tex] i.e. the length of each security numbers
[tex]r = 2[/tex] i.e. 2 security numbers
Required
In 513 security numbers, 2 must have matching zeros
To do this, we make use of Pigeonhole principle.
First, we calculate the number of all security numbers not having matching zeros.
Each of the 9 digits can be selected in 2 ways.
2 ways implies that each digit is either 0 or not
So, total selection is:
[tex]Total = 2^9[/tex]
[tex]Total = 512[/tex]
Apply Pigeonhole principle
The principle states that: suppose there are n items in m containers, where [tex]n>m[/tex], then there is at least one container that contains more than 1 item.
This means that if there are 512 security number without matching zeros, then there is 1 (i.e. 512 + 1) with matching zeros.
[tex]512 + 1 = 513[/tex]
Which of these expressions is equal to 3(30 - p)?
Answer:
[tex](3 \times 30) - (3 \times p)[/tex]
Answer B is correct
Step-by-step explanation:
[tex]3(30 - p) \\ (3 \times 30) - (3 \times p)[/tex]
hope this helps youcan I have the brainliest please?
Answer:
B
Step-by-step explanation:
B is correct. According to the distributive property of multiplication, we have 3(30 - p) = 3·30 - 3·p
If Annie purchased 2 shirts for $10.00, how much will 4 shirts cost?
Answer:
$20
Step-by-step explanation:
2=10
4=20
A summer job pays $5 per hour.
a. you work 12 hours. How much do you make?
b. after working 24 hours do you have enough money to buy an mp3 player that costs $100?
Answer:
A. 60, B. 120.
Please help I’m really confused
Answer:
Count the dots but instead as a Fraction. Like one dot is the fraction the line is on. Add them together to get your answer
Step-by-step explanation:
Hope this helped :D
Kelly had an apple She cut it in half, and then she cut it in half again
She ate three pieces of the apple. How many pieces did Kelly have it?
Step-by-step explanation:
I think the answer is 3 pieces so Kelly had 3 pieces of Apple hope it helps.
A certain high school reported that only 74% of its students enroll in a math class during senior year. If
there are 407 seniors enrolled in math at this school, how many seniors are in the school?
Answer:
550 students are in the school.
Step-by-step explanation:
The way I found my answer was by first turning 74% into a decimal, which is 0.74. Then I divided 407 by 0.74 and I got 550. Therefore, 550 is our answer.
The eight subjects used for this comparison were not a random sample. In fact, they were friends of the researchers whose ages and weights were similar to the types of people who would be measured with this DXA. Comment on the appropriateness of this procedure for selecting a sample, and discuss any consequences regarding the interpretation of the significance testing and confidence interval results.
Answer:
The sample may be a representative of the future of the future subjects, but the test results and confidence interval are suspect because it is not a random sample
Step-by-step explanation:
When the subjects used for a research are not a random sample but friends whom share similar qualities/quantities related to the purpose of the experiment. The sample may be a representative of the future subjects, but the test results and confidence interval will not be reliable enough to be accepted as standard simply because it was not a random sample
Hence the comment :The sample may be a representative of the future of the future subjects, but the test results and confidence interval are suspect because it is not a random sample
You are planning on applying to the Knirhsdaeh institute as a psychology counselor. They hire millions of psychologists around the world. You know the standard deviation for the salaries is $13 k. To find the average, you sample 23 random employees and get an average salary of $81 k. Find an 98% confidence interval for the true average salary of Knirhsdaeh employees.
Answer:
The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor
(75.4206, 86.5794)
Step-by-step explanation:
Step(i):-
Given that the mean of the sample = $81 k
Given that the size of the sample 'n' = 23
Given that the standard deviation for the salaries is $13 k
Step(ii):-
98% of the confidence interval for the true average salary of Knirhsdaeh employees is determined by
[tex](x^{-} - t_{0.02} \frac{S.D}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S.D}{\sqrt{n} })[/tex]
Degrees of freedom = n-1 = 23-1 =22
[tex]t_{0.02} = 2.5083[/tex]
[tex](81 - 2.0583 \frac{13}{\sqrt{23} } , 81 + 2.0583 \frac{13}{\sqrt{23} } )[/tex]
( 81 - 5.57940 , 81 + 5.57940)
(75.4206, 86.5794)
Final answer:-
The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor
(75.4206, 86.5794)
Find the least common multiple (LCM) of 13, 44 and 80
Answer:
good the idea work
the common multiple are you find the for work
Solve for x
Plz help!
When eleven is reduced by one-third of a number, the result is 5
. Find the number.
Answer:
18
Step-by-step explanation:
11 - 1/3x = 5
Subtract 11 from both sides
-1/3x = -6
Multiply both sides by -3
x = 18
Determine the surface area of the rectangular prism.
Answer:
The answer is 220 cm^2
Step-by-step explanation:
Formula of a rectangular prism: 2 (lw + lh + wh)
2 (lw + lh + wh)
2 (10 x 4 + 10 x 5 + 4 x 5)
2 (40 + 50 + 20)
2 (110)
= 220 cm^2
please answer asap! no scam links or scam comments or reported.
Answer:
yeah the links are anoying
Step-by-step explanation:
the answer is C
mark brainliest or add heart and 5 stars or both
A jar has 3 green jelly beans and 5 red jelly beans. What’s the odds of selecting a green jelly bean?
PLEASE HELP !!!!!!!
What is the value of the missing angle?
Answer: D
Step-by-step explanation:
180-80-35=65
180-65=115
please answer asap! no scam links or scam comments or reported.
Answer:
C
Step-by-step explanation:
Answer:
B. The longer a skydiver is in freefall, the more feet they fall per second
Step-by-step explanation:
14.53 less then or greater then 16.3
Answer:
14.53 is less than 16.3, that is the answer
Answer:
14.53 is less than 16.3
yes this is mathematics
please help i have an F right now
Answer:
4
Step-by-step explanation:
If you add up all of those, you get 24. Then you divide by 6. 24/6 = 4.
Whats the correct answer?
Answer:
5 m ........... . . ...........