This year a total of 2,185 seventh and eighth grade students attended the junior high school one thousand forty three students are seventh graders how many students are eighth graders
Answer:
1142
Step-by-step explanation:
(all)2185-(7th)1043=1142(8th)
Solve the word problem below.
Jane took out $135 from her checking account. If Jane now has a balance of $650 in her
account, how much did Jane have in the account before she took out any money?
Step 1: If x represents the variable in the word problem above, explain what the variable should
represent.
Step 2: Write an equation to model the situation.
Step 3: Solve the equation and write your answer in sentence form. Show your work.
Answer:
x = the amount of money Jane had before she took out any
x - 135 = 650
x = 785
Step-by-step explanation:
Let x = the amount of money Jane had before she took out any
Set up the equation
x - 135 = 650
To solve the equation, we must add 135 on both sides to cancel the -135 on the left side of the equal sign.
x - 135 = 650
x = 785
I hope this helps and please mark me as brainliest!
How many scores does the line plot represent
Un diagrama de sectores se puede utilizar para todo tipo de variables, pero se usa frecuentemente para las variables cualitativas.
Los datos se representan en un círculo, de modo que el ángulo de cada sector es proporcional a la frecuencia absoluta correspondiente.
El diagrama circular se construye con la ayuda de un transportador de ángulos.
Ejemplo
En una clase de 30 alumnos, 12 juegan a baloncesto, 3 practican la natación, 4 juegan al fútbol y el resto no practica ningún deporte.
If the average rate of travel is 100 miles per day, about how long would it take to
travel down each river in days?
Answer:
Distance, rate and time problems are a standard application of linear equations. When solving these problems, use the relationship rate (speed or velocity) times time equals distance.
Explanation:
For example, suppose a person were to travel 30 km/h for 4 h. To find the total distance, multiply rate times time or (30km/h)(4h) = 120 km.
The problems to be solved here will have a few more steps than described above. So to keep the information in the problem organized, use a table. An example of the basic structure of the table is below:
A cottage has a gable roof. To the nearest foot, how wide is the cottage?
In this unit, you’re working with a variety of methods for solving quadratic equations. Which method do you prefer over the others? Describe the method in your own words, and give an example of a quadratic equation that could be solved with this method. Show and explain the steps for solving the equation.
Answer:
I believe using the formula is the best method.
Step-by-step explanation:
If I am able to remember the formula this becomes the easiest method in my opinion. It is very simple and anyone can do it if the know basic algebrA.
8) Mercy marks up all goods she sells by 30%. What is the marked up price that she will sell a
hat in her store, that cost her $42?
A. $12.60
B. $45.60
C. $54.60
D. $62.40
It would be 12.60 as the profit, while the revenue is 54.60
Therefore, the answer would be
42*.3=
12.6
12.6+42=
54.60
Researchers want to determine whether all frozen pizzas have the same proportion of toppings regardless of the brand of pizza. To test this, they sampled randomly pizzas of each brand and recorded their findings in the table.
Brand Topping
Pepperoni Sausage Onion Mushrooms
Digiorno 14 21 17 17
Tombstone 11 8 10 6
Red Baron® 17 13 14 11
Tony's 9 17 15 18
Part A: What are the correct degrees of freedom for this table? (2 points)
Part B: Calculate the expected count for the number of pepperoni for Red Baron® pizza. Show your work.
Part C: Is there sufficient evidence that there is a difference in the proportion of toppings for the different brands of pizza? Provide a statistical justification for your conclusion.
The degree of freedom is 9 and expected amount for the number of pepperoni for Red Baron is 12.867.
How to calculate the degree of freedom?The degree of freedom will be calculated thus:
= (Number of rows - 1) × (Number of columns - 1)
= (4 - 1)(4 - 1)
= 3 × 3 = 9
The expected amount for the number of pepperoni for Red Baron will be:
= (55 × 51) / 218
= 12.867
Also, the p value is 0.6023 and this indicates that there is no sufficient evidence that there is a difference in the proportion of toppings for the different brands of pizza since p value is greater than 0.05.
Learn more about degree of freedom on:
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pls help me to answer this
Own words*
Answer:
I hope it will help you.
Step-by-step explanation:
Dear Teacher
Your way of setting up with math makes it easier to learn.
There's few lines for you. I hope you like it
An Awesome Math
Teacher Is Hard To Find
Difficult To Part With,
And IMPOSSIBLE To Forget.
MATH may not teach us how to ADD love or SUBTRACT hate but it gives us hope that EVERY PROBLEM has a SOLUTION.
selling price of a toy is 2 times the cost price . when selling the toy the shopkeeper makes a profit or rs 20 . what is the cost price
Answer:
rs 20
Step-by-step explanation:
20=2x-x
20=x
cost price=x=rs20
selling price=2x=rs40
profit=rs20
The principal at Key North Middle School wants to determine if the 85 students in the seventh grade prefer to collect bottles or sell magazines as their yearly fundraiser. Which of the following is a set of people that could be a representative sample of the population?
Using sampling concepts, it is found that a sample that involves an equal proportion of boys and girls is representative of the population.
What is sampling?It is a common statistics practice, when we want to study something from a population, we find a sample of this population, which is a group containing elements of a population. A sample has to be representative of the population, that is, it has to involve all segments of the population.
The students of the seventh grade can be divided into boys and girls, hence, a sample that involves an equal proportion of boys and girls is representative of the population.
More can be learned about sampling concepts at https://brainly.com/question/25122507
This is the problem it’s on my screenshot
Answer:
(x = 0,y = 0),(x = 1, y = 4),(x= 2, y =8)
Step-by-step explanation:
the rule is to multiply x by 4.
when x = 0, y =4(0) = 0
when x = 1, y =4(1) = 4
when x = 2, y =4(2) = 8
Hope this helps!
Please mark as brainliest!
What is one-fourth divided by 4 wholes
anyone know the awnser to this?
Answer:
61
Step-by-step explanation:
straight line = 180 degree
to find the measure of angle QPR,
subtract 119 from 180
=> 180-119
=> 61
angle QPR = 61 degree
Answer:
Hope the picture will help you!!
Abby has four pieces of ribbon for a project. The lengths of the ribbons are 3.7 cm, 2.9 cm, 2.6 cm, and 3.5 cm. What is the measure of the shortest ribbon?
3.7 cm
2.9 cm
2.6 cm
3.5 cm
Answer:
2.6 cm is the correct answer
Step-by-step explanation:
Answer:
2.6 cm
Step-by-step explanation:
it is the shortest
determine if - 2r + 6r^5 + sr is a polynomial or not. if it is a polynomial, state the type and degree of the polynomial
The polynomial, - 2r + 6r^5 + sr is a trinomial.
The degree of the polynomial is 5.
What is a Polynomial?A polynomial can be defined as an algebraic expression that consists of constants, variables, and positive exponents.
The degree of a polynomial is dependent on the highest exponent value carried by any of the terms. Also, the number of terms a polynomial has determines what type of polynomial it is.
Given the polynomial, - 2r + 6r^5 + sr:
It has three terms, therefore, it is a trinomial.
The degree of the polynomial is 5.
Learn more about polynomials on:
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Please, I Really Need Help!
Steve bought a used banjo for $395.00 at a music store. He was charged $425.89 for the purchase. Find the sales tax and the sales tax rate.
Sales tax rate is_____%(Round to the nearest tenth of a percent.)
Answer:
3090%
Step-by-step explanation:
425.89 - 395.00 = 30.89
Round to the nearest tenth = 30.9
Convert to a percentage = 3090%
1. Each year, the third Thursday in March is named Kangaroo Day. The dates of Kangaroo Day for the next few
years are shown below, with one error. Which date is wrong?
(A)17/3/2022
(B) 16/3/2023
(C) 14/3/2024
(D) 20/3/2025
(E) 19/3/2026
Answer:
the eero is on date in answer 'c' because the date of kangaroo is in an arrangement form
Answer:
14/3/2024 is on a Thursday, but it is the second Thursday, not the third.
Step-by-step explanation:
If the first Thursday falls on March 1, the soonest the third Thursday could occur is 7+7+1 = March 15.
need quick help pleaseee
Answer:
1080°
Step-by-step explanation:
(n - 2) x 180
n = number of sides = 8
(8 - 2) × 180 = 1080°
At a farmers market, taylor buys 4 pounds of cherries, 2 pounds of strawberries, and 3 pounds of blueberries for $29.51. heather buys 1 pound
of cherries, 4 pounds of strawberries, and 2 pounds of blueberries for $21.83. jamle buys 2 pounds of cherries and 5 pounds of strawberries for
$21.93.
which system of equations models this situation, where crepresents cherries, s represents strawberries, and b represents blueberries?
The system of equations that model the situation is:
4c + 2s+ 3b == $29.51
c + 4s + 2b = $21.83
2c + 5s = $21.93
What are simultaneous equations?Simultaneous equations are more than one equation that would have to be solved jointlu in order to determine the required values.
Methods of solving simultaneous equations are:
Elimination method Graph method Substitution methodTo learn more about simultaneous equations, please check: https://brainly.com/question/25875552
The half-life of a radioactive kind of barium is 3 minutes. If you start with 9,152 grams of it, how much will be left after 12 minutes?
[tex]\textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{current amount}\\ P=\textit{initial amount}\dotfill &9152\\ t=\textit{elapsed time}\dotfill &12\\ h=\textit{half-life}\dotfill &3 \end{cases} \\\\\\ A=9152\left( \frac{1}{2} \right)^{\frac{12}{3}}\implies A=9152\left( \frac{1}{2} \right)^4\implies A=572[/tex]
Find the mean absolute deviation of the data below:
7,4,7,7,2,10,12,8,7,5
mean formula number of values divided by the total of all the values
so
100 divided by 10
ans 10
How do you simplify the fractions 4/5 + 3/4 in lowest terms
Answer:
31/20
Step-by-step explanation:
First we find the greatest common denominator, for 5 and 4, that is 20.
[tex]\frac{4}{5} *\frac{4}{4} +\frac{3}{4}*\frac{5}{5} = \frac{16}{20} +\frac{15}{20} = \frac{31}{20}[/tex]
Since 31/20 isn't able to be simplified because 31 is a prime number, this is your final answer.
Which is the equation of a line that has a slope of -5 and a y-intercept of -3? Show me how you arrived at your answer.
a) 2y = -5x - 3
b) -2y = 10x - 6
c) -2y = 10x + 6
d) 2y = 10x - 6
Answer:
c) -2y = 10x + 6
Step-by-step explanation:
The equation of a line in slope-intercept form is:
[tex]y=mx+b[/tex]
The variables stand for:
[tex]y:$ y-coordinate of any point on the line\\$x:$ x-coordinate of any point on the lien\\$m: $ Slope of the line\\$b: $ y-intercept of the line; where the line meets the y-axis[/tex]
Plugging in the given information into the equation:
[tex]y=-5x+(-3)\\y=-5x-3[/tex]
Go through the answer choices:
a) 2y = -5x - 3
Divide both sides of the equation by 2
[tex]y=-\frac{5}{2}x-\frac{3}{2}\rightarrow\text{Incorrect!}[/tex]
b) -2y = 10x - 6
Divide both sides of the equation by -2
[tex]y=\frac{10}{-2}x-\frac{6}{-2}\\y=-5x-(-3)\\y=-5x+3\rightarrow\text{Incorrect!}[/tex]
c) -2y = 10x + 6
Divide both sides of the equation by -2
[tex]y=\frac{10}{-2}x+\frac{6}{-2}\\y=-5x+(-3)\\y=-5x-3\rightarrow\text{Correct!}[/tex]
d) 2y = 10x - 6
Divide both sides of the equation by 2
[tex]y=\frac{10}{2}x-\frac{6}{2}\\y=5x-3\rightarrow\text{Incorrect!}[/tex]
Therefore the answer is c) -2y = 10x + 6
Additional Comments:
We can only divide both sides of the equation by 2 and/or -2 because of the Division Property of Equality. This property states that if we divide one side of the equation by a certain quantity, we must divide the other side by the same quantity so that the equation remains equal.
Good Work Company charges by the word to run classified ads. This company charges $12 for the first 15 words and $0.55 for each additional word.
a. How much would a 25-word classified ad cost?
b. How much would a 50-word classified ad cost?
100 POINTS AND BRAINLYEST
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
A
Step-by-step explanation:
the volume of a sphere (= a ball) =
4/3 × pi × r³
r (radius) is half of the diameter = 8.8/2 = 4.4 in
so, one ball has a volume of
4/3 × pi × (4.4)³ = 4/3 × pi × 85,184 = 113.5786667...×pi
6 balls are 6 times
113.5786667... × pi × 6 = 681.472...×pi in³
Please find x ft, pleeaase help
Answer:
x=238 plus 0
Step-by-step explanation:
think
PLEASE HELP!! 30 POINTS
Find the measure of arc ZWX if XR and WZ are diameters.
Answer:
13πr/60 units
Step-by-step explanation:
Formula
arc length = radius x degree measureSolving
2πr x θ/360πr x 39/18039πr/18013πr/60 unitsbrainliest if right so who can get it right
Answer:
1. E: 20a - 18
2. D: 42
3. G: 17b + 3
4. I: 105
CODE: EDGI
Step-by-step explanation:
Question 1
Perimeter of a rectangle = 2W + 2L
(where W is the width and L is the length)
Given:
width = 2a + 3length = 8a - 12Perimeter = 2(2a + 3) + 2(8a - 12)
= 4a + 6 + 16a - 24
= 20a - 18
Question 2
When a = 3
⇒ perimeter = 20(3) -18
= 60 - 18
= 42 centimeters
Question 3
The dashes on the side lengths mean those sides are equal in length.
⇒ perimeter = (7b - 2) + (7b - 2) + (3b + 7)
= 17b + 3
Question 4
When b = 6
⇒ perimeter = 17(6) + 3
= 102 + 3
= 105 meters
