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July 25, 2014

Homework Help: 12th Grade

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science
My teacher is teaching us about Punnet Squares. But I don't quite understand how to do it? I have a test before christmas break. I know I need 2 be smart in 7th grade, but I don't know everything. Can u help me Jiskha? I don't want 2 fail science.
Tuesday, December 18, 2012 at 4:42pm

Science 8R - help!
I need a definition for Lines of force (8th grade science regents level, ny)
Monday, December 17, 2012 at 9:48pm

3rd grade math
25 cents __?__ 3/10 of a dollar
Monday, December 17, 2012 at 6:51pm

5th grade math
how many ways can you use a dime, quarter, and nickel to make .60 cents?
Sunday, December 16, 2012 at 10:58am

math need help
study time in X hours 8 5 7 12 10 test grade Y in percent 68 50 62 92 80 a)model the date in a linear function b)interpret the meaning of the slope
Sunday, December 16, 2012 at 12:49am

Math 5th grade
I am working on reducing fractions. How do I find the answer to 12 over 8?
Friday, December 14, 2012 at 6:54am

7th grade math Ms. Sue please
1. 7r – 7 = 2r + 18 (1 point) r = –5 r = 5 r = 2.2 r = 1.2 2. 2x + 12 = 18 – x (1 point) x = 3 x = 10 x = 6 x = 2 3. 8x – 3 = 15x + 18 (1 point) x = –3 x = 3 x = 2.1 x = .9 4. 6y – 6 = 4y + 16 (1 point) y = 2.2 y = –2.2 y = 11 y = 5 5. 3(x &#...
Thursday, December 13, 2012 at 10:09pm

Math - 8th grade
Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
Wednesday, December 12, 2012 at 9:42pm

8th Grade Math
Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
Wednesday, December 12, 2012 at 8:58pm

Math - 6th grade
Farmer John built a barn that is 100 ft by 200 ft. what is the area? perimeter? percent? fraction? and decimal?
Wednesday, December 12, 2012 at 8:01pm

5th grade math word problems
mr lee's garden is square shaped. he planted 100% of it. 1/3 of it was carrots. 1/3 of it was tomatoes. The remained 48 square feet was filled with melons. What is the length of mr lee's garden?
Wednesday, December 12, 2012 at 5:31pm

statistics
5. A professor teaching introductory psychology gave the grades that follow. According to the normal curve, she should have given about 4% A’s, 14% B’s, 64% C’s, 14% D’s, and 4% F’s. Do a Chi-Square to determine if the actual grade assignment ...
Wednesday, December 12, 2012 at 3:25am

8TH GRADE ENGLISH
we are working on using verbs correctly, so is this sentence correct? (u either use:sit,sat, or set): The newspaper SAT on the table all afternoon last Sunday. is this correct?
Tuesday, December 11, 2012 at 8:25pm

7th Grade Literature
Could someone please give me some examples of the following peices of grammar? modifiers articles prepositions interjections Thank you very much!
Tuesday, December 11, 2012 at 2:22pm

8th Grade Science
Label these reactants and products: 3Fe + 2 O2> Fe3O4
Tuesday, December 11, 2012 at 10:40am

math 6th grade proportions
Sorry if I may be bugging you,but this homework is veryy hard for me!Karen gets 6 out of every 8 questions on a test correct.If she gets 27 questions correct,how many questions are on the test?
Monday, December 10, 2012 at 8:06pm

math 6th grade proportions
Hello,Umm I need Alot of help on this problem:Emma runs for 18 minutes out of the 45 minutes she spends exercising each morning.One morning she spends 70 minutes exercising.If her rates stay the same how many minutes will she spent running>PLEASE HELP A.S.A.P!!!!!!!!
Monday, December 10, 2012 at 7:48pm

5th grade math (dividing fractions)
Hi.. I need help figuring out this problem, sovling for x: 3 divided by x/9 = 5 and 2/5 I was able to solve: x divided by 3/4 = 6 by multiplying 6 x 3/4 = 4 1/2. Just not sure how to solve the first problem. If I change 5 2/5 into mixed number,I still don't know what to do...
Sunday, December 9, 2012 at 7:26pm

Physical Education
What is the average weight for 8th grade girls?
Sunday, December 9, 2012 at 7:11pm

7th grade science help
3. Which is a possible genotype of a child of parents with blood types O and AB? (1 point) AO; BO AB; BO BO; OO CO; AB 4. You are looking at four tall pea plants. What are their phenotypes and genotypes, respectively? (1 point) tall; Tt or TT short; tt Tt or TT; tall tt; Short
Friday, December 7, 2012 at 8:31pm

7th grade math Ms. Sue please
1. 3w – 10w (1 point) 13w –7w –7 7w 2. y + 1.2y +1.2z (1 point) 2.4yz 1.3y + 1.2z 1.2y2 + 1.2z 2.2y + 1.2z 3. 6r + r – 5r (1 point) 2r 1r + r 0r 7r – 5r 4. 5x + 2(x + 6) (1 point) 7x + 6 7x^2 + 12 7x + 12 7x (x + 6) 5. –3m + 3(m + 6) (1 point) 6...
Friday, December 7, 2012 at 8:13pm

7th grade math
Simplify each expression. 1. 2z - 3y - 8z + y 2. 9 - 7t + 1 + 4t 3. For the summer, Tia buys 3 T-shirts and 2 pairs of shorts. Her brother buys 4 T-shirts and 1 pair of shorts. Define and use variables to represent the total cost. I have no idea how to do this! Please help!
Friday, December 7, 2012 at 8:13pm

Grade 11 MAth
Determine the equation of a sine function that would have a range of {y| -4 ≤ y ≤ 1, y ε R} and a period of 45o. Determine the cosine function that results in the same graph as the function above. Deter
Friday, December 7, 2012 at 6:52pm

Fourth grade science
Students are conducting an investigation that tests the force of a magnet by using one magnet to repel a second magnet. Which tool would be needed to measure the distance the second magnet moves? A thermometer,A spring scale, A ruler, or A compass
Friday, December 7, 2012 at 1:43am

grammer
What is the simple subject in this sentence Who cares if she's in 3rd grade and I'm just in 1st.
Thursday, December 6, 2012 at 11:30pm

3rd grade math
jake has an even number of counters. carlos has an odd number of counters. how many more counters do they need to divide the combined total into an even number of groups?
Thursday, December 6, 2012 at 6:48pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

9th grade math
Which of the linear systems has exactly one solution A: -x+y=9 x-y=9 B: -x+y=9 x-y= -9 C: -x+y=9 -x-y=9 D: x-y= -9 -x+y= -9
Wednesday, December 5, 2012 at 9:26pm

7th grade science Ms. Sue please
Hi I am writing a paper for school about cancer cells. I can't seem to get a good introductory paragraph going. Can you give me some ideas? Thanks!
Wednesday, December 5, 2012 at 9:15pm

Math help ? confused
The length of the Boston Marathon is 138,435 ft. Each stride, or step, by a particular runner is 3 ft long. Does the number of strides the runner takes fit evenly into the length of the race? I am lost on this question. Can anyone give me a direction? Do I divide? I am in 6th ...
Wednesday, December 5, 2012 at 7:38pm

7th grade math
16. Find the final balance in an account with $730 invested at 3% annual simple interest for 4 years. (1 point) $735.48 $87.60 $817.60 $8,760.00 is the answer 817.60
Wednesday, December 5, 2012 at 7:32pm

7th grade history
How did the location of the Arabian Peninsula help the Muslims conquer territory beyond the Arabian Peninsula?
Wednesday, December 5, 2012 at 6:20pm

5th grade math
what is a word problem for 4.23x10
Wednesday, December 5, 2012 at 4:59pm

5th grade math
Jason ate lunch at Virginia’s Diner. If his meal cost him $11.00, and he wants to leave Virginia a 15% tip, how much money should Jason leave for the total bill? A. $11.50 B. $12.00 C. $12.36 D. $12.50 E. $12.65 how do you do this?
Tuesday, December 4, 2012 at 11:17pm

Math 5th grade
9K=414
Tuesday, December 4, 2012 at 7:14pm

5th grade math hard
Are there any websites where i can make cubes and see the nets for them?
Monday, December 3, 2012 at 5:48pm

grade 12 AP calculus
Sketch a possible graph of a continuous function f that has domain [0,3], where f(0)=-3 and the graph of y=f'(x) is shown. Thank you so much for the help. It is making the concepts far more clear.
Monday, December 3, 2012 at 4:54pm

6th grade science
Which is a method of relative dating? A. examining historical records to determine when a volcano erupted B. using fossils to determine the oldest rock layer in a canyon C. measuring the depth of tree bark D. using radioactive isotopes to calculate the age of a rock I think ...
Monday, December 3, 2012 at 3:03pm

Math
The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?
Monday, December 3, 2012 at 12:57pm

grade 12 AP calculus
for f(x= -1/4x4-1/3x3+2x, use analytic method to find the exact intervals on which the function is a)increasing, b)decreasing, c)concave up, d)concave down, then find any e)local extreme values, f)inflection points
Monday, December 3, 2012 at 11:33am

Algebra
The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?
Monday, December 3, 2012 at 11:21am

URGENT!! 7th Grade Math Help Please!!
2. Price of the iPad Mini: $329.00 Price of the iPad with a 15% discount. Show all of your work please!! [4 points]
Monday, December 3, 2012 at 12:19am

Grade 12 AP calculus
You are using Newton's method to solve x3-5x-2=0. If your first guess is x1=2, what value will you calculate for the next approximation x2?
Sunday, December 2, 2012 at 6:56pm

7 th grade math
Input 1 2 4 5 10 12 Output 3 5 9 11 21 25 What is the rule for this function ? If adding add what tried 2 Need help please
Saturday, December 1, 2012 at 9:42pm

7 th grade math
Input 1 2 4 5 10 12 Output 3 5 9 11 21 25 What is the rule for this function ? If adding add what tried 2 Need help please
Saturday, December 1, 2012 at 9:20pm

Math 8th Grade (Ms. Sue) ?
An artist makes a painting that is 12 feet by 9 feet. He paints a frame around the painting. The frame is 3 inches wide. What is the area of the frame? Please provide formula for figuring out. Answers (a)10.75ftsq(b)10.5ftsq (c)12.96ftsq(d)5.3125ftsq Thanks.
Saturday, December 1, 2012 at 12:20am

7th grade language arts Ms. Sue
1. If the following sentence was rewritten to be more specific, which would be the best revision? "It was a privilege and not a right, and you messed it up." (1 point) "It was a privilege and not a right, and you don't have it now." "It was a ...
Friday, November 30, 2012 at 8:14pm

7th grade language arts Ms. Sue please
4. Which of the following is a prepositional phrase? (1 point) he didn't feel safe leaving us behind without supervision 6. Which of the following is not an interjection? (1 point) oops awesome maybe My answers: 4. without supervision 6. maybe
Friday, November 30, 2012 at 7:53pm

Astronomy Grade 9( PLEASEEE HELP!!!!!!!!!!!!!!)
What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
Thursday, November 29, 2012 at 11:15pm

Astronomy Grade 9
What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
Thursday, November 29, 2012 at 11:03pm

7th grade social studies
What are the pros and cons to democracy? Thank you.
Thursday, November 29, 2012 at 8:57pm

Math
A high school volleyball team has 20 members. If there is an equal number of members from each of the 4 grades, how many students from each grade are on the team?
Thursday, November 29, 2012 at 7:16pm

5th grade
how do you divide 1/4 by 1/2? please tell answer and explain
Thursday, November 29, 2012 at 5:05pm

Algebra Grade 7 (Rotation)
If you rotate a clock clockwise 90° from 3:00, what will it be?
Thursday, November 29, 2012 at 2:00pm

3 grade grammar
Is the grammar correct not sure if there should be an apostrophe after the s in dads Mother planned a surprise party for Dads birthday.
Wednesday, November 28, 2012 at 9:11pm

seventh grade math
if 1/2 in. = 1/3 feet then how many feet is 27 inches please someone help me ................ its drawn to scale the 27 inches
Wednesday, November 28, 2012 at 7:16pm

8th grade math
Find the interest earned on each account. $970 at 4 1/2% simple interest for 2 years. I don't know if I solved the problem correct please help: I = p x r x t = 970 x 0.42 x 2 = 814.8 I don't know what number to convert 1/4 to!
Wednesday, November 28, 2012 at 6:40pm

Algebra 8th grade.
The coordinates of quadrilateral VWXY are given below. Find the coordinates of its image after a dilation with the given scale factor. V(6, 2), W(–2, 4), X(–3, –2), Y(3, –5), scale factor of 2 Please help!!!!
Wednesday, November 28, 2012 at 4:34pm

math
what is the answer to 8,580 words in 2 h 45 min in unit rates for 7th grade
Wednesday, November 28, 2012 at 4:25pm

Algebra 8th grade please help!!!!!!
A right triangle has an area of 13 m2. The dimensions of the triangle are increased by a scale factor of 3. What is the area of the new triangle? Please help!!!! a)39 m2 b)169 m2 c)117 m2 d)142 m2
Wednesday, November 28, 2012 at 1:56pm

Math (5th grade )
Kathy's mom has made a batch of lemon bars. Her treats are in a rectangular pan that measures 12" x 8". She will cut a vertical and horizontal live every 2 inches along the length and width of the pan. How many bars will each person receive
Tuesday, November 27, 2012 at 8:14pm

7 grade math
a helicopter blade spend 775 times in 3 mintues find the rate in revolutions per second
Tuesday, November 27, 2012 at 7:33pm

7th grade math help Ms. Sue please
How do you find the sales tax of something? Here is one of my problems: The price of three dolls are $12.99. What is the price of the dolls with a 5% sales tax? Show all of your work! I cannot figure out how to put up an equation and solve this problem. Please help!
Tuesday, November 27, 2012 at 5:52pm

5th grade math
i need help
Tuesday, November 27, 2012 at 5:48pm

5 th grade math
what is the volume of a rectangular prism with a length of 4 inches, a width of 4 inches and a height of 2 inches?
Tuesday, November 27, 2012 at 5:38pm

MATH 5TH GRADE
HOW MANY TIMES MORE IS 2000 THAN 20?
Tuesday, November 27, 2012 at 4:04pm

calculus
a random sample of 80 students at a large school shows an average grade of 72 in algebra with a standard deviation of 4. find the t-score you would use for an 95 % confidence interval
Tuesday, November 27, 2012 at 2:34pm

statistics
sing the 95% confidence level and the 11th grade male writing scores in the Class Data file, you would expect the lower end of the confidence interval to be approximately what value?" Answer
Monday, November 26, 2012 at 10:09pm

Geo 7th Grade
Mexico City’s population is an example of __________________________. a. the growth of the divide between rich and poor c. the growth of immigration b. the shrinking middle class d. none of the above A?
Monday, November 26, 2012 at 7:54pm

math 3rd grade
How can you use 4x7 to find 8x7? find the product. I dont understand this how can i expect my 3rd grader to understand.
Monday, November 26, 2012 at 7:47pm

Geo 7th Grade
What would you say is the biggest influence on Mexico's economy?
Monday, November 26, 2012 at 7:34pm

Geo 7th Grade
All of the following are concerns about maquiladoras, factories on the United States-Mexico border, except a. they severely lower the GNP of Mexico. b. they negatively impact people’s health. c. they provide tedious work for low pay. d. they create air and water pollution...
Monday, November 26, 2012 at 6:21pm

Geo 7th Grade
12. A primary reason for the war of independence from Spain was __________. A) pressure from the United States to introduce a democracy B) the unwillingness of Spain to modernize the country C) the unhappiness of the criollos at the privileges reserved only for the ...
Monday, November 26, 2012 at 6:13pm

5th grade math
the press was invented about 1450 and had little change for 350 years. since then many changes have been made. how many decades have changes been occurring?
Monday, November 26, 2012 at 5:12pm

5th grade Language Arts
I need help classifying sentences (compound, complex, compound-complex). Here's the sentence: I got in trouble so I can't go to the party, but it would have been fun. I answered it was complex which I got wrong.
Monday, November 26, 2012 at 4:55pm

Spelling 4th grade
Down is to dive as up is to ____________?
Monday, November 26, 2012 at 4:13pm

6th grade math
Can't figure this math problem out: Write an algebraic expression for the product of five less than a number and three, less eight, is twenty-eight. HELP ME PLEASE!!
Sunday, November 25, 2012 at 10:33pm

science
please help me i am in 4th grade and i need help on my science project. my science project is, is smiling contagious and i have no idea what to do for research and data
Sunday, November 25, 2012 at 7:59pm

English Speech
This year, all the students in the same grade has to give a speech and the topic is "My voice is important because..." instead of repeating in every new story, "my voice is important because.." what is another way to state it?
Sunday, November 25, 2012 at 5:57pm

Statistics
A random sample of 80 students at a large school shows an average grade of 72 in Algebra with a standard deviation of 4. What is the standard error?
Saturday, November 24, 2012 at 8:24pm

Statistics for Social Science
A random sample of 80 students at a largae school shows an average grade of 72 in Algebra with a standard deviation of 4. Find the standar error.
Saturday, November 24, 2012 at 4:25pm

9th grade honors algebra
please help! I can't figure out the function rule for a table that says x=0,1,4,5 and y=9,6,-3,-6
Saturday, November 24, 2012 at 12:05pm

Math
This is a first grade problem my sister is having trouble. It is enrichment 5-5 " at the carnival" it says how many ways can Amanda ride all 3 rides? We need help cause I don't even know it myself!
Tuesday, November 20, 2012 at 7:53pm

7th grade social studies
In the Earth's Sourthern Hemisphere, what season begins in March? Spring Summer Fall Winter
Tuesday, November 20, 2012 at 6:09pm

Geo 7th Grade
What effects does climate have on Mexican daily life and its economy? I have no idea?!
Monday, November 19, 2012 at 7:46pm

3rd grade math
How can you use the multiplication facts for 3 to help fond the multiplication facts for 9?
Monday, November 19, 2012 at 7:32pm

English 8R - help!!!!!
what's the definition for connotation is there a website that have a list of all 8th grade english vocab.
Monday, November 19, 2012 at 6:58pm

Geo 7th Grade
One challenge faced by people living in Mexico’s heartland region is __________________. a. the threat of hurricanes c. the threat of earthquakes b. the threat of typhoons d. the threat of tornadoes A or C? I'm not sure
Monday, November 19, 2012 at 1:46pm

Geo 7th Grade
Which of the following coastal regions contains deposits of petroleum and natural gas? a. Northern Pacific coast c. Gulf coastal plain b. Southern Pacific coast d. Yucatán Peninsula C?
Monday, November 19, 2012 at 1:33pm

Geo 7th Grade
About half of the acid rain in Canada comes from the United States. true?
Monday, November 19, 2012 at 12:26pm

8 grade
A farmer is planting a crop straight line with three feet of distance between each plant. If planted 23, what is the distance between the first and the last crop?
Saturday, November 17, 2012 at 3:27am

Geo 7th Grade
To help reduce air pollutions legislation had been passed a. stating that all vehicles made after 2015 must contain hybrid engines. b. banning the use of any items that cause smog. c. limiting automobile gas emissions, d. requiring all households to have solar panels that ...
Friday, November 16, 2012 at 11:14pm

Geo 7th Grade
is increase of fish population due to acid rain?!?!?!?1 thanks ♥dino♥
Friday, November 16, 2012 at 11:12pm

7th grade
The story that I read for school (At Her Father's And Her Mother's Place) takes place in 1923 in Russia. What was life like during that time in terms of the politics and economics in Russia? Can you give me links to find these answers?
Thursday, November 15, 2012 at 9:46pm

7th grade English
Explain whether the following statement is a fact or an opinion: "Capitalism is a better system of government than communism." Give reasons for your answer. Isn't this sentence an opinion because it uses the word "better"?
Thursday, November 15, 2012 at 7:55pm

^th grade math,
using mental math and distributive property solve: 25(12)
Thursday, November 15, 2012 at 7:34pm

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