Thursday
May 23, 2013

# Homework Help: 8th Grade

If 720.0 mL of liquid water absorbs 80.0 kJ of heat, what will be its increase in temperature?
Monday, December 13, 2010 at 7:50pm

If 720.0 mL of liquid water absorbs 80.0 kJ of heat, what will be its increase in temperature?
Monday, December 13, 2010 at 7:49pm

Okay, so what are the axiom names? (honors math) Should this go in the 8th grade place? Oh well...
Monday, December 13, 2010 at 7:01pm

There are 40 people at a picnic. There are 4 more children than adults. How many of each are there?
Monday, December 13, 2010 at 6:16pm

how old was Anne when she died
Monday, December 13, 2010 at 5:50pm

Beth has 60 toy cars and trucks 75% of them are blue.How many are blue?
Monday, December 13, 2010 at 5:24pm

A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling towards mars at a arate of 127 meters per second, how many hours will it take the probe to reach the surface of the plant? Round to the nearest hour. Help!?
Monday, December 13, 2010 at 4:36pm

10th grade math help
How do you solve? 3-3sinx-2cos^2(x) = 0
Monday, December 13, 2010 at 12:47pm

Can you please check my answer? A spherical balloon has a volume of 268 cubic cm. If more air is pumped in so that its radius is 3 times as long, what is its new volume? My answer: 2,412 cubic cm
Monday, December 13, 2010 at 12:29pm

Greta is designing a page for the yearbook and needs to know the area of her 8 in. x 10 in. picture after she crops it. If she makes the length and width of the picture 5/8 of the original, how does the area of the picture change?
Monday, December 13, 2010 at 11:59am

Joe wants to draw a triangle.the lengths are 5cm,12cm,and 13cm. A:will joe be able to draw the triangle?why or why not?
Monday, December 13, 2010 at 9:43am

Monday, December 13, 2010 at 5:38am

inter med algebre
these were extra credit quest to help grade but i could not do these i asked so many people there were stumped can who gets this ques can u do the whole promlem pleasw. Questin; Pick a car and finf its top speed . Assuming that your chosen carnreaches its top speed at the top ...
Monday, December 13, 2010 at 3:55am

it is between 1 and 2 maillion. The first three digits are the same. The least possible digit is in the thousands place. The greatest possible digit is in the ones place. the hundreds digits is 1 more than the tens digit. The sum of the digits is 21.
Sunday, December 12, 2010 at 11:39pm

Fun and silly slogan for element "iron"?
Sunday, December 12, 2010 at 10:53pm

analogie:After is to before as epilogue is to
Sunday, December 12, 2010 at 8:10pm

.02(2X-3)-0.03(3x(.2)=-.02
Sunday, December 12, 2010 at 8:06pm

find two powers that have a product of 96, with at least one power greater than 1
Sunday, December 12, 2010 at 6:44pm

Grade 11 math - HELP!
The diameter of a car's tire is 52 cm. While the car is being driven, the tire picks up a nail. How high above the ground will the nail be after the car has travelled 0.1 km? can someone please explain how to solve this question?
Sunday, December 12, 2010 at 4:01pm

fractions
Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!
Sunday, December 12, 2010 at 2:39pm

the atmosphere..? a. creates tides b. has no effect on heat gain or loss c. allows heat to escape quickly in order to cool the planet d. keeps heat from escaping too quiclkly into space.
Sunday, December 12, 2010 at 1:23pm

a rock is dropped from a 20.0m bridge falls into the river below. a.)at whqat velocity does it strike the water? b.)how much time did the rock take to reach the water?
Sunday, December 12, 2010 at 12:40pm

500 words on (how) to write about the law of april 6th 1830?help
Sunday, December 12, 2010 at 9:23am

There is one large rectangle ABCD, top line is AD and bottom is BC. A vertical line is drawn from the top to bottom called GH (between points AD and BC). A line is drawn from left to right called EF (between points AB and GH). AEFG is Rectangle 1. EBHF is Rectangle 2. GHCD is ...
Sunday, December 12, 2010 at 9:17am

Trapezoid ABCD, top AD and bottom BC are parallel. AD is the smaller of the two parallel lines. Left AB is 45, bottom BC is 60, right CD is 30, top AD is unknown. Trapezoid EFGH is similar to ABCD, top EH and bottom FG are parallel. EH is the smaller of the two parallel lines...
Sunday, December 12, 2010 at 9:10am

what is the gerund or gerund phrase in the sentence. Cheering the team gave me a sore throat.
Saturday, December 11, 2010 at 5:28pm

What is the most important reason that sediments at beaches are usually rounded and smooth?
Saturday, December 11, 2010 at 3:15pm

A volume is measured experimentally as 4.5 mL. What is the percent error, given that the correct value is 4.17 mL? answer units in %
Saturday, December 11, 2010 at 2:16pm

Math
Scores on a test are approximately normally distributed with a men of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students. What is the bottom cutoff for an A grade? Please round answer to the nearest whole number
Saturday, December 11, 2010 at 11:58am

The population of nevada is close to 1.6 million, which is about (1)/(5 ) of michigan population. What is the estimated population of michigan?
Saturday, December 11, 2010 at 9:23am

Solve 3r + 18 ¡Ü 6r
Saturday, December 11, 2010 at 1:01am

what is the set of points equidistant from two given points A & b?
Friday, December 10, 2010 at 10:01pm

if the ratio is 3:2 and length is 5 inches.what is the widith
Friday, December 10, 2010 at 9:16pm

the perimeter of a triangle is 31 cm. sides #1 and #2 have epual length, while side #3 is one centimeter shorter than twice the length of side #1. how long is each side
Friday, December 10, 2010 at 8:19pm

What is a domestic pricing model?
Friday, December 10, 2010 at 7:20pm

If ab=6y & bc=8y What is BD In Terms Of Y.??
Friday, December 10, 2010 at 2:05pm

what will happen if there is too much mass in the cars on a roller coaster?
Friday, December 10, 2010 at 10:21am

What is the greatest and least possible product you can make using the digits 1,3,5,6 and 7 in the multiplication problem below? Use each digit only once, _ _ _ X _ _ = ?
Thursday, December 9, 2010 at 10:40pm

When a truck pulls a trailer, the trailer and truck accelerate forward even though the action and reaction forces are the same size but are going in opposite directions. Why don't these forces balance each other out?
Thursday, December 9, 2010 at 10:21pm

3/7 cup plus 1/4 cup equals how much of a cup of mixture.
Thursday, December 9, 2010 at 8:54pm

Jorge and Hector like to play marbles.Jorge had 7 more than four times the number of marbles that Hector had. Together they had 37 marbles. How many marbles did Jorge have?
Thursday, December 9, 2010 at 8:47pm

An alloy of metals is 25% copper .Another alloy is 50% copper. How much of each alloy should be used to make 1000grams of an alloy that is 45% copper?
Thursday, December 9, 2010 at 8:39pm

i need help with simple interest math homework.NOW!
Thursday, December 9, 2010 at 8:19pm

how do i solve a+3/5=24/25
Thursday, December 9, 2010 at 7:47pm

What is a number sentence that shows the same product as the product of 9 and 2
Thursday, December 9, 2010 at 7:29pm

What steps do we use to change 1-1/2 cups in half?
Thursday, December 9, 2010 at 7:01pm

science
ive been trying to find a report for 5th grade greenhouse effect science. how can i type it to find it?
Thursday, December 9, 2010 at 6:31pm

do u know how to bulid the alamo ?well me nither so lets find out
Thursday, December 9, 2010 at 6:27pm

I am doing a battle chart in history class the I need to know who won the Gonzales battle Also i need the mexican leader and the texas leader and who won on in the battle of the concepcion and where the goliad battle took place and when it took place also i need all the grass ...
Thursday, December 9, 2010 at 5:44pm

I asked one of the guards a question then iI relized he was made of wax! I need help on where to put the semicolons and colons
Thursday, December 9, 2010 at 5:22pm

Why are the flat surfaces on a rectangular prism called faces?
Thursday, December 9, 2010 at 3:10pm

what were the steps on mendels experiments with pea plants?
Thursday, December 9, 2010 at 2:10pm

how to do a double line graph with 2 superbowl teams scores with their mode median,and range for the first seven games. this is so hard for fifth grade. i need help
Thursday, December 9, 2010 at 12:42pm

Objects on the moon's surface have an acceleration due to gravity one-sixth that on the earth's. What would the 40 kg boy weigh on the moon? (Round answer to nearest tenth.)
Thursday, December 9, 2010 at 10:38am

Suppose that a kid was casually sledding down a gentle slopping hill going 6 feet per second. Then, he hit a steeper part of the hill and started accelerating at a rate of 1.2 feet/second squared. At the bottom of the steep part of the hill he was going 10.56 feet/second. How ...
Thursday, December 9, 2010 at 1:58am

I need help interpreting a quote...." in this world goodness is destined to be defeated ".
Thursday, December 9, 2010 at 1:34am

Science
I need to have an essay written about a book and the scientific relation behind it. I would do it myself but I'm not sure I know what to do and it's a large portion of my grade and it's not due until June but I need it soon as possible so I can get the worry off of...
Wednesday, December 8, 2010 at 11:21pm

0.4/2.4=f/6 Dont know how to solve please explain so i can know thank u
Wednesday, December 8, 2010 at 10:28pm

i need help with social stuides describe islam in the 600's
Wednesday, December 8, 2010 at 9:46pm

I NEED URGENT HELP!! Bob is riding his bike along at 2m/s and drops his 2kg backpack from a height of 1.5 meters. What is the backpacks resulting velocity when it strikes the ground?
Wednesday, December 8, 2010 at 8:48pm

A set of books fills a shelf that is 24in long each book is 3/4 inch thick. How many books are in the classroom shelf? Would it be 18 ???
Wednesday, December 8, 2010 at 8:26pm

how do you do rate of change?
Wednesday, December 8, 2010 at 8:13pm

I need help! I am supposed to complete the table and write an equation to show the relationship. The table has input of x, 0,1,2,3,4,5 and output of y,4,10,16,22,and the last two outputs are blank. I think they are 28 and 34--but what is the relationship?
Wednesday, December 8, 2010 at 7:57pm

how can i write a acrostic poem on beowulf?
Wednesday, December 8, 2010 at 7:44pm

The federal government affects the whole _______ _________ and the state government affects only the __________.
Wednesday, December 8, 2010 at 7:42pm

what is one way in which the state government and the federal government are different from each other?
Wednesday, December 8, 2010 at 7:40pm

What is the hydroxide ion concentration in a solution with [H3O+] = 7.67*10^-9 M?
Wednesday, December 8, 2010 at 7:25pm

if a line is measured as 1 and 4/8 inches long explain how you could simplify the measurement
Wednesday, December 8, 2010 at 6:24pm

WHATS 111,111 IN PRIME FACTORED FORM AND IN TREE FORM?
Wednesday, December 8, 2010 at 6:11pm

english
Im in third grade and i dont understand colons.i have to proofread a paragraph and combine them using colons.
Wednesday, December 8, 2010 at 5:57pm

justins father says that he will not plant less than a square meter of any vegetable.design a garden with the largest possible amount of land planted in potatoes that fits the condition of the problem and hat least one square meter allotted for each vegetable
Wednesday, December 8, 2010 at 5:44pm

What is the mode of these # 19,20,32,26
Wednesday, December 8, 2010 at 4:43pm

2(2.5b-9) + 6b= -7 what is b
Wednesday, December 8, 2010 at 2:54pm

a object has a mass of 30 grams and a volume of10 cm^3. what is the density of the material?
Wednesday, December 8, 2010 at 2:26pm

a rectangular block measures 2cm * 1.5cm *1cm .the mass of the object is 31.5 grams .what is its density ?
Wednesday, December 8, 2010 at 10:25am

The diameter of a penny is 3/4 in. How many pennies are needed to form a row 12in. long? Also to find the circumference of a circle do you use the radius or diameter x 3.14?
Tuesday, December 7, 2010 at 11:33pm

what is a good web site to find a fill in the blank persuasive essay format! please reply ASAP this is due thursday......i only have 2 more days!!!!!!!!
Tuesday, December 7, 2010 at 10:53pm

math
a roof is 2.5 feet vertically and 12.3 feet horizontally. what is the grade of the roof?
Tuesday, December 7, 2010 at 9:41pm

pre algebra 6th grade
Tara's bank account contains \$250.00. She made only one deposit exactly one year ago. The bank account pays a simple interest rate of 8%. How much money did Tara deposit in the account one year ago?
Tuesday, December 7, 2010 at 9:15pm

What are some of the similarities between the Israelites and Mesopotomians?
Tuesday, December 7, 2010 at 9:13pm

explain how you would decide whether the product of three numbers is positive or negative
Tuesday, December 7, 2010 at 9:08pm

9.8c + 8d - 4.6c + 2.9d simpilfy the expression
Tuesday, December 7, 2010 at 8:49pm

It is greater than 7 tens and less than 8 tens. The number. Has 4 ones. Write the number word
Tuesday, December 7, 2010 at 8:48pm

What is the thesis of how would Bryan evaluate the ambitions of Albert Beveridge?
Tuesday, December 7, 2010 at 7:42pm

Matt has twice as many quarters as dimes in his coin collection. If the dimes and quarters together total \$9.00 how many of each kind of coin does he have?
Tuesday, December 7, 2010 at 7:39pm

compkete the pattern 25____61____97
Tuesday, December 7, 2010 at 7:34pm

i need help in Math with Fractions can i have some pointer to remember it. P.s. Thank you guys if u can help
Tuesday, December 7, 2010 at 7:23pm

a yo-yo has a mass of 0.20kg and i attached to a string 0.8m long. what isthe velocity of the yo-yo?
Tuesday, December 7, 2010 at 7:02pm

4 reasons europeans came to the coloines
Tuesday, December 7, 2010 at 7:00pm

Math
If a wall is 6th tall and a ladder is leaning against it. The ladder is 8th tall, how far apart is is the base of the ladder away from the wall?
Tuesday, December 7, 2010 at 6:50pm

How many moles are in 8.8*10 to the 34
Tuesday, December 7, 2010 at 6:25pm

A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, and the radius of the orbit is 5.30 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.60 106 ...
Tuesday, December 7, 2010 at 5:32pm

math
franklin school has 3 boys for every 4 4 girls in fifth grade . there were 140 students in the fifth grade. A.how many are boys B.how many are gorls
Tuesday, December 7, 2010 at 5:22pm

how much would a trapizoid worth if the triangle eqauls 1/3
Tuesday, December 7, 2010 at 4:30pm

at 20 degrees celsius, how much sodium chloride could be dissolved in 2 L of water?
Tuesday, December 7, 2010 at 3:55pm

2x-y=-5 -2x-5y=11
Tuesday, December 7, 2010 at 1:47pm

for a frequency table what is the best interval for the data 1,14,6, 8, 10, 12, 15, 22, ans 25
Tuesday, December 7, 2010 at 12:48pm

Please suggest a few topics to present in micro-soft power point
Tuesday, December 7, 2010 at 7:22am

-20 / (-10)=
Tuesday, December 7, 2010 at 1:24am

After each snowstorm in Big City, USA plows remove snow from 762 lane miles of road, which is equivalent to about 48,000,000 square feet. The snowfall total was 34.2 inches in Big City, USA last winter. Suppose every snowfall evenly blanketed all road surfaces. How many cubic ...
Tuesday, December 7, 2010 at 12:37am

-17-(-5)
Tuesday, December 7, 2010 at 12:22am

Where on a glacier are oraines found?
Monday, December 6, 2010 at 11:31pm

Firm A offer 40,000 salary with \$2,000 increase evey year. FIRM B offer 38,500 salary with 5% increse every year. After how many year he will make same money?
Monday, December 6, 2010 at 11:20pm

Jen and Heather went to lunch. When the bill came, Jen discovered that she only had \$8. Heather had enough money to pay the other part, or 3/5 of the bill. How much was the total bill?
Monday, December 6, 2010 at 10:49pm

Ginny has a pumpkin with a mass of 4.8kilograms. If .9 of its mass is water, how much of its mass is water? How much is not water?
Monday, December 6, 2010 at 10:44pm

What influences did the colonies have on the imperialist nation
Monday, December 6, 2010 at 10:17pm

5 th grade math
what is the mean for the following number? 40,60,55,45,100 ?______ what is the lest Common Multiple (LCM)for 6 and 12 ?_______ please! help me i got stuck with this today!! thank you.
Monday, December 6, 2010 at 10:05pm

I need help in using the distributive property to rewrite this expression: (7 x 600) + (7 x 400) and then multiply.
Monday, December 6, 2010 at 7:37pm

math
franklin school has 3 boys for every four girls in the fifth grade. there are 140 students in the fifth grade. a.how many are boys? b.how many are girls?
Monday, December 6, 2010 at 7:24pm

the wright brothers had two flights on that fanmous day at kitty hawk. orville flew 120 ft.and 585 ft. wilbar flew 340 ft. and 852 ft. what was the average distance flown that day? at that rate , how many flights would it taken them to fly a mile? [rounded to the nearest whole...
Monday, December 6, 2010 at 7:19pm

is y=x/7 a direct variation????
Monday, December 6, 2010 at 7:06pm

how do you convert 35ibs per minutes to ibs per hour?
Monday, December 6, 2010 at 6:45pm

I am having a hard time starting my paper on Life of Pi by Yann Martel. My thesis is: If Richard Parker is Pi Patel then Pi is God. I dont know how to begin.
Monday, December 6, 2010 at 5:59pm

my teacher gave me this question I don't get it. If a normal person blinks 25 times per minute how old would you be your next birthday?
Monday, December 6, 2010 at 5:38pm

How much electricity is needed to produce 120g of Calcium metal from molten CaCl2.
Monday, December 6, 2010 at 5:01pm

what is 30 1/4-29 1/3
Monday, December 6, 2010 at 4:26pm

how many different ways can you get to the sum of 4
Monday, December 6, 2010 at 4:16pm

if less than half of a garden is planted with corn is it reasonable to estimat that 2 thirds of the garden is planted with corn?
Monday, December 6, 2010 at 3:47pm

At a school fair, you can toss coins into cups to earn points. If you earn 100 points or more you win a prize. The cups are worth 15, 20, 25, and 30 points. If you get 4 tosses and can stop whenever you reach 100 points, what are all the possible combinations of cups that you ...
Monday, December 6, 2010 at 3:37pm

a 5.0 kg bowling ball is rolling down the lane at 4.0 m/s. what is the kinetic energy of the bowling ball?
Monday, December 6, 2010 at 9:53am

jordan has 2 quarters, 1 nickel, and 3 dimes. if he took 1 out and then a second one without replacing the first coin, what is the probability that both coins were dimes?
Sunday, December 5, 2010 at 11:26pm

How are landform, like dells, formed?
Sunday, December 5, 2010 at 11:19pm

A box of books weighing 229 N is shoved across the floor by a force of 420 N exerted downward at an angle of 35° below the horizontal.If µk between the box and the floor is 0.75, how long does it take to move the box 7 m, starting from rest? (If the box will not move...
Sunday, December 5, 2010 at 8:26pm

I need help in Psychology do you guys do that? Or just ore subjects?
Sunday, December 5, 2010 at 5:45pm

a bicycle wheel must make 13 revolutions to roll 25 meters. How many revolutions must the wheel make to travel 1 km? Hint: 1000 m = 1 km
Sunday, December 5, 2010 at 5:21pm

if AB=3x-2 and BC=x+6, what is x?
Sunday, December 5, 2010 at 5:20pm

Consider two vectors where F1 = 38 N, F2 = 58 N, and = 240o and = 25o, measured from the positive x-axis with counter-clockwise being positive. What is the magnitude of the equilibriant?
Sunday, December 5, 2010 at 4:15pm

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.17 x 10^6 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 5.42 x 10^-11m.
Sunday, December 5, 2010 at 3:33pm

who ordered the great sphinx to be built
Sunday, December 5, 2010 at 11:12am

Math
If a grade was drawn at random from the data shown below, what is the probability that the grade is not a B? Grade Frequency A 2 B 8 C 11 D 2 F 1 I think it is 1 out of 5 or 4 but I am not sure? Please help :) Thank you much!
Sunday, December 5, 2010 at 10:02am

what is the velocity of a boat traveling 60 km in 2 hours?
Saturday, December 4, 2010 at 8:56pm

what is the metalloids of shininess
Saturday, December 4, 2010 at 6:23pm

log (x-9) - 109x=log 19
Friday, December 3, 2010 at 8:49pm

what makes a piano laugh? itsa math riddle
Friday, December 3, 2010 at 7:22pm

the mass of a dog that weighs 100 N how many kilograms does it weigh?
Friday, December 3, 2010 at 12:00pm

Consider the following chemical equation: NaOH (aq) + HCl (aq) ® NaCl (s) + H2O (l), the reactant NaOH?
Friday, December 3, 2010 at 10:45am

how do you calculate the volume of the aluminum block from the apparent change in the volume of water in the cylinder?
Friday, December 3, 2010 at 8:02am

I am really stuck on how to figure this answer out, could you please help me? A stoplight flashes red for 50seconds, yellow for five seconds, and green for 65 seconds. In a 24 hour period, how long is the light red?
Friday, December 3, 2010 at 12:25am

is Br2(L)+Cl2(g)--->BrCl(g) a balanced equation?
Friday, December 3, 2010 at 12:07am

what is the adjectives in this sentence: The runway was visible at night because it was lit very well.
Thursday, December 2, 2010 at 11:38pm

If you have 78.1% nitrogen,20.9% oxygen,.9% Argon and small amounts of other gases Which graph type would best display the data? Line graph bar graph pie graph stem and leaf plot
Thursday, December 2, 2010 at 10:59pm

If two angles are alternate exteriors and one of them has the measure of 3x squared, and the other had a measure of 21x what are degree numbers
Thursday, December 2, 2010 at 10:27pm

Find altitude of isosceles triangle if angle=53 degrees and base is 8 inches.
Thursday, December 2, 2010 at 9:35pm

the lengths of two sides of a triangle are 15in.each.the third side measures 10 in.what type of triangle is this
Thursday, December 2, 2010 at 9:20pm

If tickets are \$.50 for children \$2.00 men \$3.00 women Explain how 100 people can purchase tickets for \$100. No money left over and at least 1 man, 1 woman, and 1 child included
Thursday, December 2, 2010 at 8:44pm

2.4 X 10 to the 4th in standard form
Thursday, December 2, 2010 at 8:24pm

if james spends 5/6 of his weekly allowance seeing a movie he has how much of his allowance left
Thursday, December 2, 2010 at 7:57pm

Angle elevation of sun is 25 degrees. Find the length the shadow cast by a tree 41 feet tall.
Thursday, December 2, 2010 at 5:56pm

Scientists have calculated that the Moon's revolution around Earth is increasing by about .015 s per century. At this rate, how long would it take the length of a month to increase by one full day?
Thursday, December 2, 2010 at 5:53pm