Answer:
40 7th grade students.
Step-by-step explanation:
Ok so first we know the total equals 100. In order to divide the number of 6th graders and 7th graders equally, we add 15 and 10 which equals 25. Now, 100 divided 25 equals 4. Boom! We multiply 15 by 4 and that equals 60. This means there are 60 6th graders. We multiply 10 by 4 which means there are 40 7th graders. Now to check if we did it all right we add 60 and 40 which equals 100 STUDENTS IN ALL. This means we did it right. So it asked us for the amount of 7th graders which is 40! Hope this helps.
What is the percentage difference in average lifetime earnings of a college graduate earning $60,000 / year vs. a high school graduate earning $38,000 / year?
Answer: 37
Step-by-step explanation:
10.2 4/5 times 1 2/3
Answer:
14/3
Step-by-step explanation:
what is the solution to the inequalities shown above x/4 + 16 > 34?
A. x 18
C. x > 72
D. x < -72
State yes/no in each part, and explain in a sentence or two. (a) You have a drawer filled with 20 balls, which are colored black or white. You have 12 black and 8 white balls. You randomly select a ball, record the color, and put the ball back into the drawer. Then you go to randomly select another from the drawer. Is the probability that the second pick is white independent of what the first ball color was? (b) You have a box containing 52 cards, which are either red or black. You have 26 red cards and 26 black cards. You randomly select a card (don't put it back in the box). Then you go to randomly select another card. Is the probability that the second pick is diamond independent of what the first card was? (c) A basketball player is going to do a free throw 100 times at practice. They are interested in the number of goals they make each kick is either a goal or not). If each free throw attempt is independent with a 90% chance (0.90 probability) of being a goal, then is the total number of free throws that are goals in the 100 attempts following a binomial distribution? (d) A soccer ball player is going to do 50 free kicks at practice. They are interested in the number of successes they make. If each kick is independent, but the player begins to make more free kicks the more attempts they make the probability they succeed increases the more attempts they take, P is increasing), then is the total number of successes made in the 50 attempts following a binomial distribution? (e) Your girlfriend has a box filled with scraps of paper, which have the names of movies (including the one you don't like). Your girlfriend randomly selects a scrap of paper from the box, reads it out loud, and sets the paper aside. Your girlfriend then randomly selects another paper. Is the probability that the second pick is the one you don't like independent of what the first picked movie was? (f) Your wife has a box filled with scraps of paper, which have the names of restaurants including the first place you went out with her). Your wife randomly selects a scrap of paper from the box, reads it out loud, puts the paper back in the hat, and mixes up the scraps of paper. Your wife then randomly selects another paper. Is the probability that the second pick is the first place you went out with her independent of what the first name was?
Answer:
State yes/no in each part, and explain in a sentence or two.
(a) You have a drawer filled with 20 balls, which are colored black or white. You have 12 black and 8 white balls. You randomly select a ball, record the color, and put the ball back into the drawer. Then you go to randomly select another from the drawer. Is the probability that the second pick is white independent of what the first ball color was?
yes. This is because they are independent events. The fact that you returned the first ball back to the drawer makes the initial conditions the same so the probability of picking a white ball is the same as in the first attempt.
(b) You have a box containing 52 cards, which are either red or black. You have 26 red cards and 26 black cards. You randomly select a card (don't put it back in the box). Then you go to randomly select another card. Is the probability that the second pick is diamond independent of what the first card was?
No. This is because the total number of cards in the box has changed since you didn't put the first card back. For example, the probability of picking a diamond on the first try is: P=13/52=1/4 = 25%. But when you pick the first card and don't put it back in the box, then the probability changes. If the first card was a card other than a diamond card, then the probability will now be: P=13/51=25.5% the probability has increased. If the first card you picked was a diamond, then the probability would be still different: P=12/51=23.5% so the probability of picking a diamond on the second attempt has decreased.
(c) A basketball player is going to do a free throw 100 times at practice. They are interested in the number of goals they make each kick is either a goal or not). If each free throw attempt is independent with a 90% chance (0.90 probability) of being a goal, then is the total number of free throws that are goals in the 100 attempts following a binomial distribution?
Yes. For it to be a binomial distribution you must only have two independent outcomes. In this case, the outcomes are the shot being a goal or not. The probability for it being a goal is 90% and the probability for it not being a goal is 10%. So it is a binomial distribution.
(d) A soccer ball player is going to do 50 free kicks at practice. They are interested in the number of successes they make. If each kick is independent, but the player begins to make more free kicks the more attempts they make the probability they succeed increases the more attempts they take, P is increasing), then is the total number of successes made in the 50 attempts following a binomial distribution?
No. This is because the outcomes of a binomial distribution must remain constant independently on the number of attempts. Since the probability increases with the number of outcomes, then the outcomes will not be independent so it becomes a hypergeometric distribution.
(e) Your girlfriend has a box filled with scraps of paper, which have the names of movies (including the one you don't like). Your girlfriend randomly selects a scrap of paper from the box, reads it out loud, and sets the paper aside. Your girlfriend then randomly selects another paper. Is the probability that the second pick is the one you don't like independent of what the first picked movie was?
No. This is because the number of possible outcomes will decrease as she sets the paper aside. If the first movie she picked was a movie you like, then the probability that the second movie she picks is the one you don't like increases. If the first movie she picked was the movie you don't like, then the probability that on the second try she picked the movie you don't like decreases to zero since it has alreay been picked.
(f) Your wife has a box filled with scraps of paper, which have the names of restaurants including the first place you went out with her). Your wife randomly selects a scrap of paper from the box, reads it out loud, puts the paper back in the hat, and mixes up the scraps of paper. Your wife then randomly selects another paper. Is the probability that the second pick is the first place you went out with her independent of what the first name was?
yes. This is because when she puts the paper back in the lot, then the total number of papers in the box is the same as in the first try. In this case the number of possible outcomes and the number of desired outcomes are the same as in the first try, so the probability is the same no matter what the first pick was.
multiplication and addition
Answer:
ok! what do u need help on???
Simone paid $5.25 for 3 pounds of apples. Which equation represents the cost, in dollars, C, of buying a pounds of apples?
C = 1.75a
C = 2.25a
C = 1.75 + a
C = 2.25 + a
Explain whatever the answer is.
In a management trainee program at Claremont Enterprises, 80 percent of the trainees are female and 20 percent male. Ninety percent of the females attended college, and 78 percent of the males attended college.
a. A management trainee is selected at random. What is the probability that the person selected is a female who did not attend college?
b. Are gender and attending college independent? Why?
c. Construct a tree diagram showing all the probabilities, conditional probabilities, and joint probabilities.
d. Do the joint probabilities total 1.00? Why?
Answer: a. 8% ; b. Not independent; c. See tree diagram; d. Yes
Step-by-step explanation:
a. Let F = Females
M = Males
C = Those that attend college
P(F) = 80% = 0.8
P(M) = 20% = 0.2
P(C/F) = 90% = 0.9
P(C/M) = 78% = 0.78
If 90% of the females go to college, it means that 10% don't go to college.
We then use the multiplication rule and we'll get:
= 80% × 10%
= 0.8 × 0.1
= 0.08
= 8%
b. An independent event is one that the occurence of one event doesn't affect the other event from happening. However, this is not independent as the occurence of the events affect each other.
c. See attachment
The joint probability on the tree diagram will be:
= 0.72 + 0.08 + 0.156 + 0.044
= 1.00
67x(45)/16=x??
lllllllmmmmmmmmmmm sssssssssssssssssssssssssssooooooooooooooo borde
Answer:
Step-by-step explanation:
hahahaha
IIIIIIIIIImmmmmmmmmssssssssssssssssssssssooooooooooooooo borde
The graph below shows the number of cases of candy bars four students sold for a fundraiser and the total number of candy bars in those cases. How many candy bars are in each case
Answer:
Step-by-step explanation:it’s between 30 and 50
Answer: The answer is 25
Step-by-step explanation: If you look at the kid with 200 bars he had 8 boxes, so all you had to do was divide 8 by 200. I hope this helped! : )
if cade shoots 359 free throw shoot in 4 hour, how many can he shoot in 6 hours
Answer:
He will shoot 540
Step-by-step explanation:
I got this answer by dividing 359 by 4 to get how many he gets in 1 hour which is 90 then I multiplied it by 6 and I got 540
Hope I helped
How many terms are in 2x-7+y?
.......
3
Step-by-step explanation:
There is three terms
. An urn contains six colored balls: four orange and two blue. Two balls are selected at random without replacement, and you are told that at least one of them is orange. What is the probability that the other ball is also orange?
Answer:
We draw two balls. We know that one of them is orange.
Let's suppose that the first one is the orange.
Then after drawing that, we know that there are 5 balls left in the urn, and only one will be orange.
Then the probability of drawing the other orange ball is equal to the quotient between the number of orange balls and the total number of balls.
P1 = 1/5.
And now let's consider the other case, where we know that in the second draw we will draw an orange ball.
Then the probability of drawing an orange ball in the first draw is equal to the quotient between the number of orange balls (at the beginning we have 2) and the total number of balls (6)
P2 = 2/6
As those represent different cases (we assume different conditions for each one), the probability that we draw two orange balls, knowing for sure that we will draw one, is equal to the sum of these probabilities.
P = P1 + P2 = 1/5 + 2/6 = 6/30 + 10/30 = 16/30 = 8/15
From 2010 to 2011, the population of Queens increased by 16,075. Brooklyn’s population increased by 11,870 more than the population increase of Queens.
a) Estimate the total combined population increase of Queens and Brooklyn from 2010 to 2011. (Round the addends to estimate.)
Answer:
44020
Step-by-step explanation:
Mark as Brainliest
Which statement is true?
-42<-59
-42<-54
-59 > -47
-59-54
Submit
Answer:
-59<-54
Step-by-step explanation:
There are 99 males and 121 females participating in a marathon. What participants are females?
Answer:
121..??
Step-by-step explanation:
Which product is positive?
Answer:
The last option.
Step-by-step explanation:
When you multiply a negative by a negative it makes a positive number. Therefore, if you multiply an even number of negative numbers, you get a positive product. The other options have an odd number of negative numbers to multiply by that makes them result in a negative product.
Consider the following system that has a solution of (5,3).
Answer:
Option pls
Step-by-step explanation:
Answer:Solution. (a) The system has no solutions if k 2 6= 3 , i.e. k 6= 6 . (b) The system has no unique solution for any value of k. (c) The system has infinitely many solution if k = 6. The general solution is given by x 1 = 3+t,x 2 = t Exercise 52 Find a linear equation in the unknowns x 1 and x 2 that has a general solution x 1 = 5+2t,x 2 = t ...
Step-by-step explanation:
SO FIRST YOU GO TO GOOGLE TYPE IN YOUR ANSWER AND THEN BAM
What is the domain and range for the function f(x)=0.3x +100
Answer:
Domain: -INFINITY , INFINITY
Range: -INFINITY , INFINITY
Step-by-step explanation:
What is the domain of f
A) The x values -7, -5, -4, 3 and 7
B) -6 ≤ x ≤ 4
C) -7 ≤ x ≤ 7
D) The x values -6, -5, 2, 3, and 4
Solve the system of equations below.
{2x−y=3x+2y=−6
Answer:
Step-by-step explanation:
y=7 so (2x y) =14 (3x + 2y =
The solution of the linear system of the equation is (0, −3).
What is linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
The equations are given below.
2x − y = 3
x + 2y = −6
Then the solution to the equation will be given by the elimination method. Then we have the equation.
4x − 2y = 6 ...1
x + 2y = −6 ...2
Add equations 1 and 2, then we have
5x = 0
x = 0
Then the value of y will be
2y = −6
y = −3
Then the solution of the linear system of the equation is (0, −3).
And the graph is given below.
More about the linear system link is given below.
https://brainly.com/question/20379472
#SPJ2
how many roots. real or complex doses the polynomial 7+5x^4-3x^2
Answer:
4 roots
Step-by-step explanation:
Assuming the exuation is
7+(5x^4)- (3x^2)
the polinomial has 4 roots
because a polynomial always has as many roots as it's highest degree
Answer:
4 complex roots
Step-by-step explanation:
The value of an explanatory variable is 23, while the corresponding value of the response variable is 9. What would be the coordinates of this data point when plotted on a scatterplot? A. (9, 32) B. (23, 9) C. (32, 9) D. (9, 23)
Answer:
(23,9)
Step-by-step explanation:
The Coordinates of this data point when plotted on a scatterplot is (23, 9).
The Correct option is (B)
What are Coordinates?Coordinates are a pair of integers (Cartesian coordinates), or sporadically a letter and a number, that identify a certain place on a grid, also referred to as a coordinate plane. The x axis (horizontal) and y axis are the two axes that make up a coordinate plane (vertical).
Given:
The value of an explanatory variable is 23.
and, the value of the response variable is 9.
Now, the explanatory variable represents the x- coordinate and the response variable represents the y- coordinate.
Then, the coordinates of this data point is in form of (x, y) i.e., (23, 9).
Learn more about Coordinates here:
https://brainly.com/question/28806463
#SPJ2
How are sedimentary rocks changed to metamorphic rocks?
Question 3 options:
A through the addition of heat and gravity
B through the addition of heat and oxygenation
C through the addition of heat and melting
D through the addition of heat and pressure
Answer:
C
Step-by-step explanation:
I just learned about this and took a test
Answer:
It's C.
Step-by-step explanation:
4. To be linear means to have a constant (the same)
rate of change over all intervals. Which of the
following relationships is linear?
|
X
4.
2.
0
Y
1
5
13
17
X
1
2
4
5
Y
1
3
5
7
A.
B.
X
5
3
-1
-3
Y
1
5
13
17
Y
5
9
Sinaloa
1
6
C.
D.
Find the simple interest: Principal: $3020 Interest Rate: 5% Time: 6 months
Answer:
A = $3094.58
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Simple Interest Rate Formula: A = P(1 + r)ⁿ
A is the final amountP is the principal amountr is the raten is the time (in years)Step-by-step explanation:
Step 1: Define variables
A = ?
P = 3020
r = 0.05
t = 6 months = 0.5 years
Step 2: Solve for A
Substitute: A = 3020(1 + 0.05)^0.5Add: A = 3020(1.05)^0.5Evaluate: A = 3020(1.0247)Multiply: A = 3094.58And we have our final answer!
you have $20 to spend on a taxi fare. The ride costs $5 plus $2.50 per kilometer.
Answer:
What is the question?
Step-by-step explanation:
Answer:
Im gonna assume you want to know how far you can get with the entire 20$
Step-by-step explanation:
so its 5$ already and 2kilometers is another 5. SO you can get 6 kilometers with all of your 20$
Determine the intercepts of the line.
y = -7x + 3
Y-intercept and y-intercept
There are 100 coffee drinkers, 50 take sugar, 60 take cream, and 30 take both cream and sugar. How many take no cream or sugar? (permutation)
Answer:
20 take no cream or sugar.
My question has been answered
There are 74 children at a camp 38 are girls the rest are boys how many boys are at the camp
Answer:
36 boys are at the camp
Step-by-step explanation:
Answer: 36
Step-by-step explanation: just subtract 38 from 74
74-38=36