Step-by-step explanation:
The mean of a set a score is simply the average score.
To find the mean, simply sum the individual scores and divide by the total number of scores;
Mean of a set of score = [tex]\frac{Total scores}{Number of scores}[/tex]
Another way to find the mean is using:
Mean = [tex]\frac{summation of all f(x)}{summation of all the frequency}[/tex]
Multiply the frequency of each score with the score and divide by the sum of all of the frequency.
2. The median is the middle score;
Arrange the data set from the lowest to the highest, the median is the one that falls in the middle.
If there are two numbers find their sum and divide by 2.
Which of the following expressions are equivalent to -x/y
Answer:
-z/e
Step-by-step explanation:
-x/y = -z/e
solve for x
x/3 = 5/8
Answer:
x = 15/8
Step-by-step explanation:
x/3 = 5/8
Using cross products
8x = 3*5
8x = 15
Divide each side by 8
8x/8 = 15/8
x = 15/8
X= 1 7/8
Step-by-step explanation:
The sum of the angle measures of a quadrilateral is 360°.
write and solve an equation to find the value of x. Use a protractor to check the
reasonableness of your answer.
A game store sold 206 games last week for $26 each the store owner had a sales goal of $5,000 for the week how much did the store owner actually earn
Answer:
5356$
Step-by-step explanation:
206*26=5356
rosa puts 2/3 cup of vegetables mixture in 1 tortilla. she has 8 cups of vegetable mixture.
Answer:
She need to divide 24 by 2 to get 12. She can fill 12 tortillas
Step-by-step explanation:
Robert earned $10, which was 4 less than twice what Eric earned. How much money
did Eric earn?
Answer:
uh
Step-by-step explanation:
gygygyg
Mary is twice as old as Helen’s age, If 8 is subtracted from Helen’s Age and 4 is added to Mary Age? Mary will be 4 times as old as Helen. What are the ages
Answer:
set mary is x years old, and helen is y years old.
first sentence:x=2y
second one:4(y-8)=x+4
bring x=2y in 4(y-8)=x+4
=>4y-32=2y+4
=>2y=36
=>y=18
=>x=36
mary:36
helen:18
We want to write and solve a system of equations that models given situation. We will see that Helen is 18 years old, and Mary is 36 years old.
Let's define the variables we will be using.
m = Mary's age.h = Helen's age.We know that "Mary is twice as old as Helen’s age"
Then:
m = 2*h
"If 8 is subtracted from Helen’s Age and 4 is added to Mary Age, Mary will be 4 times as old as Helen."
(m + 4) = 4*(h - 8)
Then the system of equations is:
m = 2*h
(m + 4) = 4*(h - 8)
To solve it, we can replace m by 2*h in the second equation, so we get:
(2h + 4) = 4*(h - 8)
2*h + 4 = 4*h - 32
4 + 32 = 4*h - 2*h
36/2 = h = 18
And we know that:
m = 2*h = 2*18 = 36
So Helen is 18 years old, and Mary is 36 years old.
If you want to learn more, you can read:
https://brainly.com/question/9351049
A club elects a president, vice-president, and secretary-treasurer. How many sets of officers are possible if there are 11 members and any member can be elected to each position? No person can hold more than one
office
11 members and we have to pick three without replacement.
[tex]_{11} C_{3}[/tex] = 165
There are 165 possible sets of officers
Type your response in the box.
Janet and Patrick are buying stuffed frogs each month to give to a charity. Pattern 1 describes Janet's collection over
the first three months. Pattern 2 describes Patrick's collection. Study both patterns, and fill in the table based on
your observations.
Step-by-step explanation:
Pattern 1 :
Arithmetic Sequence
Common term = 4
Pattern 2 :
Geometric Sequence
Common ratio = 2
Answer:
pattern 1 arithmetic The common difference is 4. The pattern starts at 3 and always adds 4 to get to the next term.
pattern 2 geometric The common ratio is 2. The pattern starts at 3 and always multiplies by 2 to get to the next term.
Step-by-step explanation:
The average of 5 distinct scores has the same value as
the median of the 5 scores. The sum of the 5 scores is
420. What is the sum of the 4 scores that are NOT the
median?
Answer: 336 is the sum of the non-median scores
Step-by-step explanation: if the sum of 5 scores is 420, the average is 420/5 = 84
That is also the median to be subtracted: 420-84= 336
A landscaper needs to estimate the amount of material required for a project building a circular brick patio for a client. The diameter of the patio is 13m and one bundle of brick will cover 116ft^2. How many bundles does he need?
Answer:
13 bricks
Step-by-step explanation:
Given parameter:
Diameter of the patio = 13m
Area of one bundle of brick = 116ft²
Unknown:
The number of bricks that will cover the patio = ?
Solution:
To solve this problem, we must find the area of the patio first.
Area of the patio = π r²
r is the radius of the patio;
Radius = [tex]\frac{13}{2}[/tex]
So area = π x ( [tex]\frac{13}{2}[/tex]) ² = 132.75m²
Now, let us convert the Area of the brick from ft² to m²;
1ft² = 0.093m²
116ft² = 0.093 x 116 = 10.79m²;
The number of bricks required to cover the patio = [tex]\frac{132.75}{10.79}[/tex] = 12.3 bricks,
Realistically, about 13 bricks would be needed.
Evquivilent Ratio for 23:37
Answer:
46:74
Step-by-step explanation:
Most major ski resorts offer family programs that provide ski and snowboarding in- struction for children. The typical classes provide four to six hours on the snow with a certified instructor. The following data are the location and the daily rate at 6 ski resorts reported on January 20, 2006. Resort Location Daily Rate Beaver Creek Colorado $137 Deer Valley Utah $115 Diamond Peak California $95 Hunter New York $79 Mount Bachelor Oregon $83 Butternut Massachusetts $108 How many variables are in the data set? ______________ Use whole number, example 3
Answer:
2
Step-by-step explanation:
Given the data:
Resort___________Location _____Daily Rate
Beaver Creek_____ Colorado______ $137
Deer Valley________ Utah_________$115
Diamond Peak______California_____ $95
Hunter____________New York_____ $79
Mount Bachelor_____Oregon______ $83
Butternut________ Massachusetts__ $108
The dataset above has two variables wgjich corresponds to the characteristic of each distinct element in the dataset. The variables are usually recognized as columns in a tabular dataset. The variables in the dataset above are :
Location and Daily rate which are attributes of each distinct Ski Resorts which corresponds to elements of the data.
pls help plz pls plz
Answer: c
i’m pretty sure it’s c
Answer:
B
Step-by-step explanation:
15 rows with 7 cookies is just multiplying, 15*7, to get how many cookies that's in the tray. There's also 9 trays, so we multiply (15*7) by 9
Write the equation of the line that has a slope of -5 and goes through (1,-4)
Answer:
y=-5x+1
Step-by-step explanation:
plug the coordinate points to the equation, and find your y intercept
Simplify the algebraic expression by combining like (or similar) terms.
-7x - 8y- 5x - 6y
Answer:
-12x - 14y
Step-by-step explanation:
First I would move them side by side so I can see it better so:
-7x - 5x - 8y - 6y
now combine the x values together and the y values together:
-12x - 14y
Jade and Jackson are considering a $210,000 mortgage for 30 years at 5.7%. With this information, their monthly payment would be $1218.84.
If they make only the minimum payment each month, what is the total payback of this loan?
How much of this total payback is interest?
Answer:
Jade and Jackson
The total payback of this loan = $438,782.72
The interest of this total payback is $228,782.72
Step-by-step explanation:
a) Data and Calculations:
Mortgage = $210,000
Interest rate of mortgage = 5.7%
Monthly payment = $1,218.84
Using an online calculator for Mortgage Payoff, the Original Payoff Schedule is:
Monthly Pay = $1,218.84
Total Payments = $438,782.72
Total Interest = $228,782.72
Answer:
Step-by-step explanation:
1218.84⋅12⋅30=$438,782.40
The total interest paid is the total payback less the amount borrowed.
$438,782.40−$210,000=$228,782.40
prove cosec 2x + cot 2x = cot x
csc(2x) + cot(2x) = 1 / sin(2x) + cos(2x) / sin(2x)
csc(2x) + cot(2x) = (1 + cos(2x)) / sin(2x)
csc(2x) + cot(2x) = (1 + cos(2x)) / (2 sin(x) cos(x))
csc(2x) + cot(2x) = cos²(x) / (sin(x) cos(x))
csc(2x) + cot(2x) = cos(x) / sin(x)
csc(2x) + cot(2x) = cot(x)
Which of the following is a term?
A: 17y + 11
B: 6p
C: 7x / 2
D: 1 + 1
Answer:
B
Step-by-step explanation:
Which expression can be used to find 80% of 120?
Answer: the expression (120/100)*80 results in 80% of 120
Step-by-step explanation:
what is the constant proportionality of this graph
Answer:
0 to 10
Step-by-step explanation:
I did this one slot of times but I never get it
Answer:
A: [tex]x^{2} \leq 16[/tex]
A is a solution set of the inequality.
This means:
[tex]x^{2} \leq 4[/tex]
∩ (AND)
[tex]x^{2} \geq -4[/tex]
Which can also be written as:
Interval notation: x ∈ [-4, 4]
Set notation: {x | [tex]-4 \leq x \leq 4[/tex] }
The formulas below are the cost and revenue functions for a company that manufactures and sells small radios.
C(x)= 64,000 + 45x and R(x) = 49x
a. Use the formulas shown to write the company's profit function, P, from producing and selling x radios.
b. Find the company's profit if 24,000 radios are produced and sold.
a. The company's profit function is P(x) =
(Simplify your answer.)
Solve w - 4b = 1 for w
I have done this for a million times and I always get this one wrong I need the correct answer
Answer:
A, B, and D.
Step-by-step explanation:
HEY!! remember that if a number has ^2, it basically means it's multiplied by itself. for example:
5^2 = 5 x 5
aka, 25.
You can use this to check each of the answers in your formula, like this:
if x=6, then:
x^2 < 100
6 x 6 = 36
36 < 100
A is one of your correct answers!
Also remember, if you multiply a negative by a negative, it becomes positive.
-5 x -5 = 25
-10 x -10 = 100
Water freezes at 0 celcius and 32 fahrenheit
Answer:
true
Step-by-step explanation:
A carnival ride holds 30 people at a time. In one hour,
220 people went on the ride. It was full each time
except the last. How many times was the ride
completely filled?
Answer:
7
Step-by-step explanation:
what is the slope.of the line passing points (1, -5) and (4, 1)
Answer:
[tex]\huge{\boxed{\sf{ 2 }}}[/tex]
Step-by-step explanation:
Let the points be A and B
A ( 1 , -5 ) [tex]\longrightarrow[/tex] ( x1 , y1 )
B ( 4 , 1 ) [tex]\longrightarrow[/tex] ( x2 , y2 )
Finding the slope :
Slope = [tex]\frac{y2-y1}{x2-x1}[/tex]
Slope = [tex]\frac{1 - ( -5 )}{4 - 1}[/tex]
Slope = [tex]\frac{1+5}{4-1}[/tex]
Slope = [tex]\frac{6}{3}[/tex]
Slope = [tex]2[/tex]
Hope I helped!
Best regards!
~TheAnimeGirl
How do i do this problem
Answer:
no clue
Step-by-step explanation:
In a group of students, 30 played chess, 19 played volleyball, 25 played
basketball, 14 played both volleyball and chess, 8 played both baskethall
and volleyball, 15 played both basketball and chess and 5 played both
three events. How many played chess only, basketball only and volleyball
only? How many students are there in all?
Answer:
Explained below.
Step-by-step explanation:
Denote the events as follows:
C = chess
V = volleyball
B = basketball
The data provided is as follows:
n (C) = 30
n (V) = 19
n (B) = 25
n (C ∩ V) = 14
n (B ∩ V) = 8
n (B ∩ C) = 15
n (C ∩ V ∩ B) = 5
Consider the Venn diagram below.
The number of students who played only chess is marked in pink:
n (Only C) = 6
The number of students who played only volleyball is marked in blue:
n (Only V) = 2
The number of students who played only basketball is marked in orange:
n (Only B) = 7
The number of students who played all three is marked in grey:
n (C ∩ V ∩ B) = 5