9th Grade

Physical Science 9th grade
Could someone please explain how I do this or provide a link explaining how. I am very confused. 1) a) Name 2 properties of waves that change if the wave changes media. b) Name a property that does NOT change when it changes media. 2) If the wavelength of a wave increases when...

Physics
A ball is dropped from the top of the 9th storey building reaches the ground in 3 sec .find the height of the building

Physics
At what height above the earth's surface. the acceleration due to gravity will be 1/9th of its value at the earth's surface. Re = 6400km

Writing
What is the correct way to write this sentence? For the fourth-grade class hike, a lot if kids wore new hiking shoes, they were sturdy. Answer choices A For the fourth-grade class hike, there were a lot if kids they wore new hiking shoes that were sturdy. B For the fourth-...

Math
If 6th term of a GP is 9375 and its 4th term is 375.find its 9th term?

Albegra
diego wrote one equation to find a missing angle measure.Write three more equations to solve the same problem 180 grade - -------=48 grade

math
If the sum of the 4th term and the 7th term is 45.The sum of the 9th term is 117.Find the term when the sum of it is 600

Physics (9th)
Sasha is driving straight and notices an antelope in the road a ways off. Determine the stopping distance (from the time she sees the antelope) for her car with an initial speed of 95 km/hr and an acceleration of -4.0 m/s2. Sasha's reaction time to start breaking is 1.0 second.

science- sound class 9th
aditi clapped her hands near a cliff and heard the echo after 4 seconds. what is the distance of cliff from her if the speed of sound is taken as 346ms-1

9th grade algebra (recursive formula)
Can you explain how to find a sub 1 in the following problem? 1. Given 2 terms in an arithmetic sequence, find the recursive formula. a sub 18 = 3362 , a sub 38 = 7362 Steps: a. Find difference: (7632 - 3362)/(38 - 18) = 4000/20 = 200 b. plug into recursive formula: a sub n = ...

computer,science, java
Inorder to motivate the employees, the company has decided to announce the different types of bonus depends up on the employee’s Grade. If the employee belong to Grade A bonus=20% basic Grade B bonus=15% basic Grade C bonus=10% basic Grade D bonus=7% basic Grade E bonus=5% ...

science
Write a java program using classes and object to read the em[loyee code (Integer), Imployee name (string), Basic salary )double), Category (Character)then calculate the bonus(double)and the total salary(double)eligible for each employ. The output should have the employee code...

Pre Algebra Review
Thirty-five students belong to the science club. This 1/4 the number in the 5 sections of the eighth grade. How many students are in the eight grade? How many in each section if each section has the same number of students?

Math
In math class, a student has an average grade of 85% for five tests so far. What grade must that student earn on the next test to reach an average grade of 90% for all six tests?

Math
The average score on a recent test was 75%. One of the students earned a grade of 93% while another student earned a grade of 78%. A total of 23 students took the test. Find the average grade of the remaining 21 students.

accounting
provided accounting services to dress shop $8,500. payment to received on july 9th how would this journal entry be posted to the general journal.

9th grade algebra (completing square)
Can you check the following? A1. (2x + 3)^2 = 25 sqrt(2x + 3)^2 = +-sqrt(25) 2x + 3 = +- 5 2x + 3 = 5, 2x + 3 = -5 2x = 2, 2x = -8 x = 1, x = -4 {-4, 1} A2. x^2 + 14x + 45 = 0 x^2 + 14x + __ = -45 + __ x^2 + 14x + 49 = -45 + 49 (x +7)^2 = 4 sqrt(x+7)^2 = +- sqrt(4) x + 7 = +- ...

MATHS
The 9th and 22nd term of the AP are aw and 55 respectively. find the sum of the 70 term

Personal question
How would you deal with someone that has been bullying you since fourth grade? I have talked to adults talked to councelors and I have talked to his mother who happened to be my fifth grade teacher yet he is still at it. I don't want to seem like a baby and file a no contact ...

MATH
The forty and the 9th term of an AP is -3 and 12 respectively. Find the common difference and some of the frist 7th term

Science
So I have an 89% in my science class and we took a test worth 15 points. I only got 8 correct which is an F. I have 2 A's, a B, and a D as the other grades in the grade book. How will this F affect my grade? I need it to stay a B

Math
A fertilizer covers 5/8 square foot in 1/4 hour. i don't understand how to work out this math problem. By the way i'm in 6th grade but technically doing advanced math so i'm doing 7th grade math. I don't know how to do this

Math
In​ Marissa's calculus​ course, attendance counts for 10​% of the​ grade, quizzes count for 20​% of the​ grade, exams count for 55​% of the​ grade, and the final exam counts for 15% of the grade. Marissa had a 100% average for&#...

Science
A body is moving with uniform accelaration goes 65 meter 5th second and 105 meter in 9th second. How far will it go in 20th seco d

9th grade algebra
Can you explain how to find the solutions to the following system of equation problems? Graph f(x) and g(x) to find the solution to the equation f(x) = g(x). Approximate the answer when necessary. 1. f(x) = -2/3x +4 and g(x)= x - 6 Ans: Step1 graph lines. f(x) has y-int of 4 ...

Math
A nut wholesaler sell two types of mixes of cashews and peanuts. He makes low-grade mix containing 8 pound of peanuts and 4 pound of cashews and high-grade mixer containing 6 pound of peanuts and 6 pound of cashews. Let x and y denote the numbers of low-grade and high-grade ...

9th Grade Biology
Cell theory is based on a series of discoveries. In 1655, Robert Hooke coined the word "cell" from his investigations of cork cells. Almost two hundred years later, Schleiden and Schwann proposed the cell theory that states that: All life forms are made from one or more cells...

Math
8 to the 12 power over 8 to the 9th power equals 8 to the what power?

Math
When you have a 76% in math and you need to get your grade up to a b and daily assignments are 10% and quizzes are 80%. How will I get my grade up to a b in 5 weeks

RE
I am going to take the Regents Algebra 1(Common Core)and I'd like to know whether a certain procedure of mine could lower my grade. When solving linear equations I do this: x+2=20 I just pass the 2 negative to the other side without subtracting it from the left . Can this ...

math
Are trigonometric functions taught in 11th grade, if so ,is it wrong that i wasn't tought that topic in 11th grade????plz help!!!!

arithmetic sequence
find the 9th term of the arithmetic sequence with Asub1=10 and =1/2

Maths
This is KINDA a homework question, but would it be a good idea to review the topics learnt in seventh grade for maths before going into eighth grade? Thanks :)

Science
A body covers 80 meter in 7th second,124 meter in 9th second, how much shall it covers in 15 second?

8th grade algebra 1 b
Does anyone have the answers to the Unit 4 Lesson 10 test? The connection academy eighth grade one. It is the Quadratic Functions and Equations Unit Test that has 24 questions. Thanks.

Economics
A student taking economics, statistics, and finance has decided to spend 9 hours per week studying. The objective is to maximize the average grade, which means maximizing the total grade in the three courses. 1. How should the student allocate her time

Math ---HELP!!!!!
30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a sample of 100 ...

Math ---HELP!!!!!
30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a sample of 100 ...

Maths
The 6th term of an g p is 12 15 is grieven that the common ration is 3 find the 9th term

java programming
Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Write the following methods in the program: • calcAverage—This method should accept five test scores as...

stats
Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A’s to the top 10% of students, B’s to the next 25%, and C’s to the next 42%. a.) what is the bottom cutoff for a C grade? b.) what is the ...

Math
I have a 92 average right now. I got a 93 on a major grade test, but my teacher has not posted the grade in Skyward yet. Will my average get lower or higher?

math
the 9th term of an arithmetic sequence is 29. the 16th term is 50. what is the 20th term ?

dramatic art .tourism. history and math lit
I'm doing grade 11 next year grade 12 I don't know which job can do with this subject pls help me to found more information about it plss

Science
What should I take next year? I am in the 5th grade. I want to know what classes i should take for 6th grade.

math
a student’s grade in a class is simply the mean of five 100-point exams a. If the student has grades of 77, 73, 97, and 89 on the first four exams, what is the students’ grade before taking the last exam? b. What is the lowest score that the student can earn on the last ...

Math
Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound...

electrical electronics engineering
I was give an assignment to be submitted on 9th of march please help out topic write a term paper on "MySQL database engines: an overview of MyISAM and InnoDB". Pls help out

math
If I have an 89 and get a 70 on something that is worth 50% of my grade what would my grade become

algebra
the 9th term of an A.P is 52 while he 12th term is 70. find the sum of is 20 term

Statistics
2.5 Points 30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a ...

input output
I'm in 12th grade. But I find this 6th grade problem a bit CHALLENGING. X: 4 12 Blank Blank Y: 6 18 Blank 60 Someone please solve this. Like.. WHAT. (Solve the blanks)

Maths
the 5th, 9th and 16th term of an AP are consecutive terms of the GP. Find. 1. the common ratio of the GP 2. given that the 13th term of the AP is 200, find the common difference of the AP.

Algebra
Determine the explicit formula for each arithmetic. The 9th and 10th yerm of an arithmetic sequence are -24 and -30 respectively. What is the 30th term?

5th grade math
The fifth-grade class at John Adams Middle School earned $428.81 at their school carnival. The money is being divided between 23 students to help pay for their class trip. How much money will each student receive? Round to the nearest hundredth. is it $18.60 ?

Math
I can grade 5 papers in 45 minutes how many papers can I grade in 1.5 hours

Grades
If I have an 82 in a class right now and a test is 50% of my grade but I get a C what would my total grade in the class be

math
If x, (3x+5) and (7x+4) form the first three terms of an A.P, 1.Find X 2. Find the 9th term

pre algebra
in a math class with 31 students 27 earned a passing grade in a biology class with 21 students 17 earned a passing grade... what fraction of the math students earned a passing grade

Day secondary school kataeregi
The first and last terms of an a.p are 79 and 5 and it's sum is 814 find(a) the number of terms in the a.p(b)the common different between them.(c) the 9th terms is of an a.p is 52, while the 12th terms is 70 find the sum of it's 20th terms.

St charles
The third term of an A.P is 8 and 9th term of the A.P.exceeds three times the third term by 2.find the sum of its first 19th terms.

pre calc
Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound ...

pre calculos
Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound ...

language
What is a 13 letter word whose 9th letter is "O" and describes a relationship between two people or mood?

Algebra
In his mathematics class, John has taken 3 tests, each worth 20% of his total grade. His grades on those tests were 92%,83%,and 85%. He has an 100% average on his homework, worth 10% of his grade. All that remains is a final exam worth 30% of his total grade. To the nearest ...

chemistry
1.2x10 to the 9th power gallons of water per day converted to gallons per second

Math
A number to the 12th power divided by the same number to the 9th power equals 125. What is the number? 125 - Am I correct

math please help 9th grade
Which sum will be irrational? (1 point) 3 + 2 start root 19 end root plus start fraction 7 over 2 end fraction Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. –6 + (–3.251) Which product will be rational? (1 point) 17 point ...

Biology, please help 9th
how the brain is related to human behavior and what the brain’s role is in the field of psychology.

math (algebra)
In Professor Tuffguy's mathematics class, 36 students took the final exam. If the average passing grade was 78, the average failing grade was 60, and the class average was 71, how many of these 36 student passed the final?

Physics
A Particle moving with uniform acceleration is found to travel 35m in the 8th second and 51m in the 9th second. its velocity in m/sec at the beginning of 11 seconds is a> 49 b> 45 c> 47 d> 51

Nursing
My current overall average is a 76%. Another grade of 67 needs to be added in. That grade is worth 10%. What will my final average be?

Math
x to negative 3, x to 9th power, y to 5th power, y cubed Is the answer x to the 6th, y to the 8th?

algebra
how do you expand completely: (x to the fourth power y to the fifth)entire problem to the fifth. do you just add the exponents? (answer x to the 9th - y to the 6th)

math
Monday -4 degrees Fahrenheit increase 6 degrees. On Tuesday it increased 2 degrees. For the next 7 days it increased. What is the temperature on the 9th day?

Math
The sixth term of an arithmetic sequence is 20.6 and the 9th term is 30.2. Find the 20th term and find the nth term.

Algebra 1
A teacher graded the tests for each of her students. She calculated a mean grade of 80 and a standard deviation of 3. One of her students, Katrina, had a z-score of 2. What grade did Katrina get on the test?

math
The 9th term of an arithmetic sequence is 12 and the 17th term is 28, find the 4th term of the arithmetic sequences

math
Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level. A. 0.14 B. 0.26 C. 211...

statistics
Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level. A. 0.14 B. 0.26 C. 211...

programming
Write a Java application that computes and prints the grade of a student according to the following algorithm: 1) It should read from the user TMA score and MTA score. 2a) If their sum is less than 15, the grade "FC" should be printed and the program will stop. 2b) Otherwise, ...

ICT (Programming)
Design program logic that receives the letter grades for 4 subjects and then based on the grades, calculate the total grade point. The program should use IF statements to determine the grade point corresponding to the letter grade (as given in the table below). Once all the ...

7th grade math (probability)
I'm not sure how to answer this: 3. THe 7th grade wants to have a back-up representative just in case the first teacher is absent. Based on the same scenario as #2, if a math teacher was chosen to be the 7th grade representative, what is the probablility that the back-up drawn...

Math
Kami has an average of 64% in her class. School ends soon and she would like to raise her grade to a 74%.She has 2 tests left and tests counts as 80% of her grade, what would she have to get on the next to test to get her average up to a 74%?

Math
Theo made the table below to show the number of middle school students who attended the last football game. If the data were displayed in a circle graph, how many degrees would be in the sector representing the eigth graders? Grade 6 Number of students in attendance 375. Grade...

MATH
DRIVING DOWN A 10% GRADE, THEN YOU DESCEND TO 20 FEET BELOW YOUR STARTING POINT. wHAT CONCEPT DOES THE GRADE RELATE TO?

Math
Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...

4th grade math
explain how you know that 21/30 is greater than 2/3. Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!. Also, I need a FOURTH GRADE ANSWER, nothing else, perferibly using fraction strips.

math
it takes about 20 minutes to grade a student's paper. How long, in hours, does it take to grade papers for a class of 25 people?

statistics
In a course there is a midterm exam, worth 40% of the course grade, and a final exam worth 60%. On the midterm the mean grade was 80 with a standard deviation of 10, and on the final the mean was 75 with a standard deviation of 15. The correlation between the two exams is 0.6...

mathematics concepts
Select the answer choice that best describes children's readiness to understand how to tell time. A. Introduce the units of measurement in grade one; expect accurate measurement in second grade. B. It may be introduced in grade 2, but it will be beyond primary before accuracy ...

arithmetic
Determining the first three terms of an ArithmetiC progressionof which the (a.)10th term is 31 and the 15th term is 49 (b.)7th term is 3 and 12th term is -3 (c.)5th term is 8 and the 11th term is -28 (d.)9th term is7+9x and d=2x,Show all calculations

Mathematics
If the 9th term of an A.P is five times the 5th term. Find the relationship between a and d?

Chemsitry
What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade

Math
An oil company owns two refineries. The daily production limits and operating costs for each refinery are given in the table below. An order is received for 1540 barrels of high-grade oil, 1650 barrels of medium-grade oil, and 2860 barrels of low-grade oil. How many days ...

7th grade math
Can you check these? 1. Olivia typed 2 pages in 15 minutes. Write an equation relating the number of minutes m to the number of pages typed. How long will it take her to type 10 pages at this rate? Ans: 15/2 = 7.5 = 7.5 * 10 = 75 minutes 2. If the ratio of Type O to non-Type O...

maths
The 4th term of an ap is 15 while the 7th term is 27, find the sum of the 9th and 10th term.

java programming
Create a java program that will calculate the current grade in a classroom. The program should ask for 5 grades as well as total point value per grade available.

Maths
The 4th term of an AP is 6 if d sum of d 8th and 9th term is -72 the common difference is

Grades
If I have an 80 in my class, and I get a 70 on my test which is 33.33% of my grade, what will my overall grade become

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