Urgent please!!! I really don’t understand it, tysm to anyone who can answer thissss :))))
Given:
The frequency distribution table.
To find:
The mean average score on a test.
Solution:
The frequency distribution table is
[tex]Marks (x_i)[/tex] [tex]Frequency(f_i)[/tex] [tex]f_ix_i[/tex]
x a xa
y b yb
z c zc
Sum a+b+c xa+yb+zc
Now, the mean average score on the test is
[tex]Mean=\dfrac{\sum f_ix_i}{\sum f_i}[/tex]
[tex]Mean=\dfrac{xa+yb+zc}{a+b+c}[/tex]
Therefore, the mean average score on the test is [tex]\dfrac{xa+yb+zc}{a+b+c}[/tex].
Help me ASAP pleaseeee
Answer:
no
yes
no
yes
Step-by-step explanation:
Simplify the following expression completely
(5x4+5x3-17x2+6x)-(3x4+6x3-7x2-12)/x+2
Please show your work
Answer:
6x^2+3x-4/x
Step-by-step explanation:
first multiply to get (20+5x3-17x2+6x)-3x4+6x3-7x2-12/x+2
then remove the two opposites that add up to zero to get (20+15-34+6x)-6x3-7x2/x+2
then remove unnecessarry parentheses to get 1+6x-18-14/x+2 and then calculate to get 3+6x-4/x
then write all of the numerators above the common denominator to get 3x+6x^2-4/x and reorder the terms to get your solution which is 6x^2+3x-4/x
please give brainliest it took forever lol
what is the value of the 8 in 5.349 in decimals
what is the circumference of a circle that that is d=23 ft.
Answer:
72.26ft
Step-by-step explanation:
According to the college board, the mean quantitative SAT scores score for female college board high school seniors in 2009 was 500. SAT scores are approximately Normally distributed with a population standard deviation of 100.A scholarship committee wants to give awards to college bound women who score at the 96th percentile or above on the SAT. what score does an applicant need? Include a well-labeled Normal curve as part of your answer (in the book it says there are 7 steps the 7th being a sentence to state what you found)
Can someone plz help me
Answer:
28 in
Step-by-step explanation:
Given is an isosceles triangle.
In an isosceles triangle, measure of the sides opposite to the equal angles are equal.
Therefore,
3x + 2 = x + 6
3x - x = 6 - 2
2x = 4
x = 4/2
x = 2 in
x + 6 = 2 + 6 = 8
Perimeter of the triangle
= 8 + 8 + 12
= 28 in
Which of the following graphs could describe the system of equations?
A Blue
B Green
C Pink
D Purple
Answer:
The answer is...
Step-by-step explanation:
Purplea
A student has $30. Berries cost $3 per pound.Which inequaility shows n, the number of pound he can buy?
the value of y is proportional to x when x=3 then y=15 which equation represents the relationship between x and y?
Answer:
explaination
Step-by-step explanation:
# carry on learning
The solution is, A. y = 5x, the equation represents the relationship between x and y.
What is equation?An equation can be stated as a mathematical statement that is made up of two expressions connected by an equal sign. In its normal form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
here, we have,
Direct proportion equation:
y = kx, where k is the coefficient of proportionality
We have:
x = 3 and y = 15
Using the equation to find the value of k:
15 = 3k
k = 15/3
k = 5
The equation of the line:
y = 5x
Correct choice is A
Hence, The solution is, A. y = 5x, the equation represents the relationship between x and y.
To learn more on equation click:
brainly.com/question/24169758
#SPJ6
Haley made 88% on a history test. The
test had 50 questions of equal point value.
How many questions did Haley miss?
Answer:
She missed 6 questions.
Step-by-step explanation:
88% can be written as (88/100) or as 0.88.
You can set this as a ratio problem which is,
88/100 = correct/50
correct = (88/100)*50 (multiply both sides by 50)
correct = 44
So, 50 (total questions) - 44 = 6 incorrect questions
Dane needs to cut 4 strips of border for his rectangular project board. The project board has a length of 12 1/2 inches and a width of 6 1/4 inches. How much border will Dane have left if the border comes in a 60-inch roll?
In the middle school band, there is 1 oboe for every 7 clarinets. Identify three equivalent ratios to compare the oboes to the clarinets.
Answer:
지금 당장받는 퀴즈에 대한 도움이 정말 필요 해요 ... 그냥 질문에 무작위로 답 해주셔서 ... 미안 해요 미안 해요 .. 또한 몬스타 엑스를 아시나요, 그들은 정말 좋은 그룹입니다
Step-by-step explanation:
Answer:
1/7, 2/14, 3/21
Step-by-step explanation:
Finished the quiz and got 100%.
Please help ASAP! Due in 10 mins
Answer:
C : The coefficients and constants will always be the same
Step-by-step explanation:
This is because infinitely many solutions means that the lines are both right on top of each other and there is not an intersection.
WILL GIVE BRAINLIEST AND 20 POINTS!
Find the LCM.
11, 13
STEP 1: Define the LCM (least common multiple).
The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of all the numbers.
The LCM can be found by first writing each number as a product of prime factors.
The LCM must contain all the prime factors of each number.
STEP 2: Determine the prime factorization of each number.
Determine the prime factorization of 11.
11 =
Determine the prime factorization of 13.
13 =
STEP 3: Multiply all of the prime factors.
11 ×
=
LCM =
Answer:
143...is the lcm...
Step-by-step explanation:
lcm (11; 13) = 143: least common multiple, calculated. Numbers have no common prime factors: 143 = 11 × 13...................
WORTH 67 PTS!! I WILL GIVE BRAIBLIEST!
Write an expression that is equivalent to
3/4a + 2/3 - 1/2a - 1/3 + 1/2a
3/4a + 2/3 - 1/2a - 1/3 + 1/2a
= _a + _
Answer:
7/4a + 1/3
1 3/4a + 1/3
Step-by-step explanation:
Answer:
1 3/4AN + 1/3
Step-by-step explanation:
work out the value of x and y?
Step-by-step explanation:
x = 49° { being vertically opposite angles }
y = 63° (being alternate angles)
Hope it will help :)
Sandra wrote the sequence shown:
7, 14, 25, 40, 59
Complete each of the 2 activities for this Task.
Activity 1 of 2
What explicit expression can be used to find the nth term of this sequence?
Answer:
2n^2 + n + 4.
Step-by-step explanation:
7, 14, 25, 40, 59
The differences are 7, 11, 15, 19 which is arithmetic sequence so the given sequence is quadratic.
Compile a table:
n 1 2 3 4 5
term 7 14 25 40 59
Diff: 7 11 15 19
Diff: 4 4 4 - this indicates that first part is 2n^2.
2n^2 2 8 18 32 50
term-2n^2 5 6 7 8 9
- the nth term for the last sequence is 5+ (n - 1)d =
= 5 + (n - 1)* 1
= n + 4.
So nth term for the original sequence is 2n^2 + n + 4.
What algebraic representation best describes the transformation below?
A. (x, y) --> (2x, 2y)
B. (x, y) --> (x+1, y+2)
C. (x, y) --> (1/2x, 1/2y)
D. (x-2, y+1)
Answer:
A. (x, y) --> (2x, 2y)
B. (x, y) --> (x+1, y+2)
C. (x, y) --> (1/2x, 1/2y)
D. (x-2, y+1)
THIS IS URGENT
Simplify 5^3/4 divided by 5^5/9 by substituting a numerical value for a in the expression.
5^a
Answer:
a=7/36...............
Can someone answer this please: 37.3 rounded to the nearest integer
thank you <3
Answer:37
Step-by-step explanation:
rounding to the nearest integer is what is in the tenth place so .1 is in the tenth place so 37.3 rounded to the nearest tenth place would be 37
tysm for all your help Here is a crown and points. contest the first answer will get a mark
WWWWWWWWWWWWWHHHHHHHHHHHHHHHHHHHHAAAAAAAAAAAAAAAAAAAAATTTTTTTTTTTTTTTTTT
Answer:
AHH
Step-by-step explanation:
A shoe store uses a 50 percent markup for all of the shoes it sells . What would be the selling price of a pair of shoes that has a wholesale cost of 65$
Answer:
97.50
Step-by-step explanation:
65.00x50%=32.50
32.50+65.00=97.50
Answer:
/
Step-by-step explanation:
Find the area of the composite figure.
Answer:
144
Step-by-step explanation:
Need help with finding X
Answer:
Step-by-step explanation:
PLZ HELP DUE SOON!!!!!!!!!!!!!!!!
The figure shows a carpeted room. How many square feet of the room are carpeted?
A polygon that is a part of a rectangle is shown with perpendicular sides. The top is labeled 6 feet. The side on the left is labeled 8 feet. The base is labeled 2 feet, and the side adjacent to it on the right is labeled 3 feet
24 square feet
28 square feet
34 square feet
36 square feet
Answer:
36 ft
Step-by-step explanation:
Side = 8-3 = 5
6 x 5 = 30
3 x 2 = 6
Mr. And Mrs. Jenkins wanted to make a down payment of $25,000 on a house. If the house costs $125,000, what percent is this?
Answer:
20%
Step-by-step explanation:
Mr. And Mrs. Jenkins wanted to make a down payment of $25,000 on a house. If the house costs $125,000, what percent is this?
The Percentage of the down payment is given as:
Down payment/Cost of the house × 100
Down payment = $25,000
Cost of the house = $125,000
$25,000/$125,000 × 100
= 20%
The percentage is 20%
Which situations can be represented by an exponential function?
Select each correct answer.
The value of a vehicle decreases by 11% each year.
In a structure made of bricks, each row has 10 more bricks than the previous row.
A dentist's office accepts 15 new patients each month.
Every year, the number of online video subscriptions increases by 3 times what is was the previous year.
Answer:
The answer is IC and D I just finished the text
Step-by-step explanation:
find the distance of a cord 8cm from the centre of a circle of a radius 5 cm
Answer:
d = 3 cm
Step-by-step explanation:
Given that,
The distance of a cord, c = 8 cm
The radius of the circle, r = 5 cm
Half of the cord = 4 cm
We need to find the distance of a cord from the centre of the circle. We can find it using Pythagoras theorem,
[tex]5^2=d^2+4^2\\\\d^2=25-16\\\\d=3\ cm[/tex]
So, the required distance is 3 cm.
The answer choices are:
Y=-4
Y=1
X=-4
X=1
Answer:
y=1
Step-by-step explanation: