Tuesday
May 21, 2013

# Homework Help: Math

Branches of Math

Math
What percent of runners completed the time trial between 52.0and 53.9 seconds?
Thursday, May 16, 2013 at 7:40am

math vocab?
what is math vocab? The types of units that are used to measure the perimeter of an object thanks
Thursday, May 16, 2013 at 7:20am

Math (Geometry)
ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
Thursday, May 16, 2013 at 1:47am

biz math
what is the portion if the base is 900 and the rate is 12 3/4?
Thursday, May 16, 2013 at 1:24am

math
5. A bus on a regular schedule takes 3 1/4 hours to reach its destination. The express bus takes 2 1/2 hours to make the same trip. How much travel time can be saved by taking the express? A. 1 1/4 hours B. 3/4 hour C. 2 hours D. 5 3/4 hours it C right?
Thursday, May 16, 2013 at 12:02am

MATH
7. Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all? A. 26 pounds B. 24 pounds C. 22 pounds D...
Wednesday, May 15, 2013 at 11:49pm

math
a jar contains two red and five yellow marbles. A marble is drawn at random and then replaced. A second draw is made at random. find the probability that both marbles are red?
Wednesday, May 15, 2013 at 11:14pm

Math
Determine the last three digits of 10,000,000 ‡” (n^7+n^5 ) n=2
Wednesday, May 15, 2013 at 11:09pm

math
Is 0·50 the same as1/2
Wednesday, May 15, 2013 at 10:49pm

math
Kris wants to order a personalized license plate for her car. The plate is to have the 4 letters KRIS followed by any two digits. Part A: How many different ways can the two digits be arranged? Part B: Suppose the plate has KRIS followed by two additional digits. How many ...
Wednesday, May 15, 2013 at 10:39pm

math
Simplify positive exponents 2n.(3n)
Wednesday, May 15, 2013 at 10:16pm

Math
Winnie can use up to 10 coupons when buying a box of DVDs. Each coupon is worth \$3. She bought a box of DVDs for \$56 less the value of her coupons. a)choose a variable to represent the number of coupons. b)Write an Algebraic expression that describes the amount Winnie paid for...
Wednesday, May 15, 2013 at 9:58pm

Math
Danski brother farms planted 370 rows of tulips.each row was 20 meters long. What is the total length of the rows? Write your answer in kilometers.
Wednesday, May 15, 2013 at 9:36pm

math
If a number increases from 47 to 70.5 what is the rate of increase?
Wednesday, May 15, 2013 at 9:12pm

math
What is 7,000 decreased by 62%?
Wednesday, May 15, 2013 at 9:10pm

math
Explain how to factor 5x^2 - 125.
Wednesday, May 15, 2013 at 9:05pm

math
what is the rule of the input output table input 2 output 11 input 3 output 15 input 5 output 18 input 8 output? what is the rule?
Wednesday, May 15, 2013 at 8:06pm

I have a question on math if I start to look for a object hidden by making the center of a field as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. And I find nothing at (-12,8...
Wednesday, May 15, 2013 at 7:15pm

Math
A team has won 50% of the 60 games it played, find the number of games the team must win in succession to increase its winning percentage to 60%?
Wednesday, May 15, 2013 at 6:49pm

Math
When constructing a cumulative histogram do you use the frequency or cumulative frequency
Wednesday, May 15, 2013 at 6:10pm

Math
When the queen counted her jewels, she found that she had five pearls for each diamond, two opals and three rubies for each diamond, and two emeralds for each opal. If she has three diamonds, how many jewels does she have altogether?
Wednesday, May 15, 2013 at 6:03pm

math
What do you notice about lines of symetry in regular polygons?
Wednesday, May 15, 2013 at 5:24pm

Math
It is 3 miles from Sally's home to school. How many feet is that?
Wednesday, May 15, 2013 at 4:52pm

math
Draw and label a rectangle that has an area of 18 square units? . How much is that in width and length.
Wednesday, May 15, 2013 at 4:23pm

math
write each decimal as a mixed number.5.25 and 9.12 WAS never taught this. Thank you
Wednesday, May 15, 2013 at 4:18pm

math
write each mixed number as a decimal.3 and seven tenths. 4 and one half how??
Wednesday, May 15, 2013 at 4:07pm

math
Amanda bought a car for \$8,500. Her loan was for five years at a 4.6% interest rate. How much will Amanda pay for her car total, including interest?
Wednesday, May 15, 2013 at 4:01pm

math
Find the surface area of a cone with diameter 27 m and slant height 19 m. Leave your answer in terms of . Note: You do not need to include in your answer
Wednesday, May 15, 2013 at 3:04pm

math
The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet
Wednesday, May 15, 2013 at 3:03pm

math(galerkin,collocation)
can some one plz help how to make trial function for solving equations in collocation and galerkin methods which satisfy the given boundary conditions. example y"+y=3*square(x) with y(0)=0 and y(2)=3.5. is there some method of making trial func or we have to make it ...
Wednesday, May 15, 2013 at 2:27pm

math
What is the portion if the base is 900 and the rate is 12¾ %
Wednesday, May 15, 2013 at 10:42am

math
Michael Reeves, an ice cream vendor, pays \$17.50 for a five-gallon container of premium ice cream. From this quantity he sells 80 scoops at \$0.90 per scoop. If he sold smaller scoops, he could sell 98 scoops from the same container; however, he could charge only \$0.80 per ...
Wednesday, May 15, 2013 at 10:38am

Math (Geometry)
ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
Wednesday, May 15, 2013 at 5:36am

Math (Geometry)
A point P is given outside of a circle Γ. A tangent from P to Γ touches Γ at T with PT=45. A line from P cuts Γ at the 2 points A,B. If PA=25, what is the length of PB?
Wednesday, May 15, 2013 at 5:31am

Math (Geometry)
ABCD is a parallelogram with side lengths AB=15,BC=10 and ∠ADC=75∘. A point P in the interior of the parallelogram is chosen such that ∠APD+∠CPB=180∘. What is the measure (in degrees) of ∠PAD+∠PCB?
Wednesday, May 15, 2013 at 5:30am

Math (Probability)
When Lino submitted an essay for his English class, it was 9 pages long. Lino's essay had errors on pages 2 and 7. If the teacher chose 3 pages uniformly at random to read, then the probability that she didn't read any of the pages with errors can be expressed as a/b ...
Wednesday, May 15, 2013 at 5:28am

English
Talk about the things you don't have to do on Sunday. I don't have to study hard. I don't have to see teachers at school. I don't have to see my homeroom teacher. I don't have to walk to school. I don't have to clean my classroom. I don't have to ...
Wednesday, May 15, 2013 at 4:45am

math
The probability that a positive divisor of 60 is greater than 9 can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
Wednesday, May 15, 2013 at 4:16am

math
Ariel makes a sandwich using four kinds of Italian lunch meat: A, B, C and D and two kinds of Italian cheese: X and Z. Ariel's sandwich has a single layer of each type of meat and a single layer of each kind of cheese, but he also wants to make sure that the two types of ...
Wednesday, May 15, 2013 at 4:09am

Math
ted sells his homemade peanut butter for 1.60 a jar at the local farmers Market the jar is 8 cm in diameter and 10 cm high he decides he will also sell peanut butter in jats that are 16 cm in diameter and 20 cm high.What should he charge if he uses the same price per cubic ...
Wednesday, May 15, 2013 at 1:30am

Math
a manufacturer makes right triangular prisms like the one shown for refracting light. They will be packed in boxes 12.5 cm long, 2.5 cm wide and 22.5 cm high. How many prisms can fit the box?
Wednesday, May 15, 2013 at 1:23am

Math
a manufacturer makes right triangular prisms like the one shown for refracting light. They will be packed in boxes 12.5 cm long, 2.5 cm wide and 22.5 cm high. How many prisms can fit the box?
Wednesday, May 15, 2013 at 1:22am

Math
a rectaguler tub with dimesions 2m x 1m x 0.5 is filled with water using a pail of radius 0.1m and height 0.35. How many pails of water will be required? give yor answer to the nearest pail.
Wednesday, May 15, 2013 at 1:14am

Math
A=hb/2 solve for b
Wednesday, May 15, 2013 at 1:11am

Math Growth & Decay
a) A growth factor of 1.22 corresponds to a rate of? b)a growth rate of 6.7% corresponds to a growth factor of? c)a decay factor pf 0.972 corresponds to a decay rate of? d)A decay rate of 12.3% corresponds to a decay factor of?
Wednesday, May 15, 2013 at 1:05am

math analysis/ precalc
Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year. A. 1.0655 B. 1.3259 C. 1.0633
Wednesday, May 15, 2013 at 12:24am

math analysis/ precalc
Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year.
Wednesday, May 15, 2013 at 12:22am

Math
How do I identify the initial value and the growth or decay for these problems? a) Q=25000 x (1/2)^t b) y=350 x 5* c) N=5000 x (9/10)^t
Wednesday, May 15, 2013 at 12:11am

Math
Let S be the set of {(1,1),(1,−1),(−1,1)}-lattic​e path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most ...
Tuesday, May 14, 2013 at 11:51pm

math
How many positive integers n are there such that 10^n≤n^10?
Tuesday, May 14, 2013 at 11:34pm

Math
The sum of two numbers is twice their difference. The larger number is 6 more than twice the smaller. Find the two numbers.
Tuesday, May 14, 2013 at 11:22pm

Math
A wheel on Greg's bicycle is 0.3 m in diameter. Greg races the bicycle for 31 m. How many times does the wheel turn as the bicycle travels this distance?
Tuesday, May 14, 2013 at 10:26pm

math help
How do I write this in inequality? The value of r is at most 10 and would it be an open or closed on the number line? I think open?
Tuesday, May 14, 2013 at 10:03pm

math
how to describe a model that represents 3/3x4/4?
Tuesday, May 14, 2013 at 9:53pm

Math
What is 4963rounded to the nearest hundred?
Tuesday, May 14, 2013 at 9:52pm

math
0.2(x+30)-0.03(x-40)=17.4
Tuesday, May 14, 2013 at 9:46pm

math
what is the percent in the form specified of 48%ratio,1%decimal,99%fraction
Tuesday, May 14, 2013 at 9:43pm

Math
A bullet reaches a speed of 900 ft per sec in .2 sec. What is its acceleration.
Tuesday, May 14, 2013 at 9:39pm

math
You and a friend are biking in opposite directions starting from the same point. You travel 108 feet every 8 seconds. Your friend travels 63 feet every 6 seconds. How far apart are you and your friend after 15 minutes?
Tuesday, May 14, 2013 at 8:58pm

1. (2x)(10x) (1point) 20x 12x 20x^2** 5x 2. -3m(m+8) (1point) -3m^2+24 -3m^2-24m** -24m^2 -4m+5 3. 4d(2d-9) (1point) 8d-36d -d -28d^2** 8d^2-36d 4. 5b(6b-10) 11b-10 5b^2+6b-10 -b-10 30b^2-50b** Are these right
Tuesday, May 14, 2013 at 8:56pm

Hi! This question says Joe is thinking of o function machine.He says that the output is 12 if the input is 4.what are 2 rules that he could be thinking of for his function machine?( I would really be grateful if you helped me) ;)thanks
Tuesday, May 14, 2013 at 8:37pm

Horses, pigs and cows is really easy I can do it in my head but, my teacher told me I would have to start showing my work. I really have no clue how to do that I have always done it in my head. Can you pretty please help me I would gladly appreciate it. Thank you. :)
Tuesday, May 14, 2013 at 8:13pm

math
-10i(5+8i)
Tuesday, May 14, 2013 at 8:12pm

math
Assume you want to accumulate \$125,000 for a long-range goal in 40 years. You have two choices. Plan A is an account with annual compounding and an APR of 5%. Plan B is an account with continuous compounding and an APR of 4.5%. How much of an investment does each plan require ...
Tuesday, May 14, 2013 at 7:22pm

math
You deposit \$1200 in an account that pays an APR of 7% compounded monthly. How long will it take for your balance to reach \$150,000?
Tuesday, May 14, 2013 at 7:22pm

math
A rectangular flower garden is surrounded by a grass border. the grass border is 5 meters wide on all sides of the flower garden and the outer dimensions are 50 meters by 40 meters. Determine the area of the grass border and show how you got this answer
Tuesday, May 14, 2013 at 7:16pm

math
Five friends went to a baseball game. Three of the friends each bought tickets for x dollars and a soda for \$6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.
Tuesday, May 14, 2013 at 7:04pm

math
What is the portion if the base is 900 and the rate is 12 3/4?
Tuesday, May 14, 2013 at 6:35pm

Math~Reiny Could you help with this question?
List three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11. Plz help it's urgent.
Tuesday, May 14, 2013 at 6:29pm

How does functions in math relate to what you put into it is what you get out of it? Can you explain for me? i'm thinking it doesn't really? one example if you can like in sports or goverment? Don't know.
Tuesday, May 14, 2013 at 6:26pm

math
the surface area of a prism with base 25mm by 35 mm and the height at 50 mm
Tuesday, May 14, 2013 at 6:02pm

math
tom bought 3 pieces of bubble gum for 12 cents total, if tom paid with a quarter how much change was left after the purchase
Tuesday, May 14, 2013 at 5:58pm

math
What is 4 x (8 + m)?
Tuesday, May 14, 2013 at 5:53pm

math
one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
Tuesday, May 14, 2013 at 5:50pm

MATH
Tuesday, May 14, 2013 at 5:45pm

math
Rewrite this expression using the distributive property. 4 x (8 + m)
Tuesday, May 14, 2013 at 5:43pm

Math
25. Edith earns an annual gross salary of \$17,500. She has 28% of her gross salary withheld for taxes and other deductions. What is the net pay of each paycheck if she is paid weekly? \$274.04 \$43.87 \$242.31 26. Franklin deposited \$1,400 in a savings account that accrues simple...
Tuesday, May 14, 2013 at 5:41pm

2 math
write algebraic equation for -36 equals q increased by 9.
Tuesday, May 14, 2013 at 5:40pm

math
write the algebraic equation for "after 7 is added to a number, the sum is divided by 4 and the result is 12"
Tuesday, May 14, 2013 at 5:39pm

math
What is The ratio of w's to consonants in this sentence? Wes and Willow went walking.
Tuesday, May 14, 2013 at 5:33pm

math
a 10-foot ladder is placed against the side of a building as shown i figure i below.the bottom of the ladder is 8 feet from the base of the building .in the order to increase the reach of the ladder against the building ,it is moved 4 feet closer to the base the bulding shown ...
Tuesday, May 14, 2013 at 5:29pm

Math
what is the area of a circle with a circumference of 43.98226in.?
Tuesday, May 14, 2013 at 5:22pm

math
how to get the 5^2=13^2
Tuesday, May 14, 2013 at 5:22pm

math
Rewrite this expression using the distributive property. 4 x (8 + m)
Tuesday, May 14, 2013 at 5:20pm

math
A cable 20 feet long connects the top of a flagpole to apoint on the ground that is 16 feet from the base of the pole.how tall is the flagpole? (A) 26ft (B) 10ft (C)12ft (D)8ft..
Tuesday, May 14, 2013 at 4:49pm

math
A graph includes the ordered pair (2,4). Write two different rules that would be possible for this graph. Explain how you found your answer.
Tuesday, May 14, 2013 at 4:48pm

Math
Tuesday, May 14, 2013 at 4:18pm

math
Ralph, Mario, Jack, Laura, and Maria are in the math club. The club advisor will assign students to 3-person teams at the next math team competition. How many different 3-person teams can be formed from these five students? would this be 10, because of 5 * 4 * 3 / 3 * 2 * 1?
Tuesday, May 14, 2013 at 4:06pm

math
A juice company decides to test six different brands of juice by comparing each brand with each of the other brands. How many different pairs of the six juices will be tested? 10 12 15 7 is it 15?
Tuesday, May 14, 2013 at 3:45pm

math
Judy frog brings 6 socks on a trip. one third of the socks are red. the rest are green. how maby socks are red? how many are green?
Tuesday, May 14, 2013 at 3:30pm

Reiny or Steve could you check my Math?
1. (9m+6)+(-5m-6) my answer: 4m 2. (3r^2+7r+1)+(4r^2-8r-2) my answer: 7r^2-r-1 3. (6h-1)-(9h+4) my answer: -3h-3 4. (m^2-m-4)+(m-5) my answer: m^2-9 5. (4x+4)+(3x+2+1) my answer: 7x+7 Now this was book work for me so it doesn't have multiple choice, so are my answers correct?
Tuesday, May 14, 2013 at 3:16pm

math
If a mail man could deliver to 112 homes on foot and to 168 homes by driving what percent productivity increase by driving
Tuesday, May 14, 2013 at 2:59pm

8need a function rh grade math
a 154 lb person burns 420 calories per hr riding an exercise bike at 15 mph. Need a function rule to represent the total calories burned over time.
Tuesday, May 14, 2013 at 2:36pm

math helllllllllllpppp plzzzzzzzzzzzzzzzzzzzzzzz
What are the last 2 digits of 43^2082?
Tuesday, May 14, 2013 at 2:16pm

1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that you select a vowel. From a fraction to simplest form. 12/5 5/12 1/3 7/12 2. You roll a standard cube once. Fine P(0) 7/6 1 1/2 0 3. This question is ...
Tuesday, May 14, 2013 at 2:08pm

math
The probability that a positive divisor of 60 is greater than 9 can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
Tuesday, May 14, 2013 at 1:59pm

math alggggggggebra
Find the largest number of real numbers x1,...,xn such that for all i≠j, |xi−xj|>1/100(1+xixj).
Tuesday, May 14, 2013 at 12:49pm

math alggggggggggggebra
Find the largest possible integer n such that there exists a non-constant quadratic polynomial f(x) with integer coefficients satisfying f(1)∣f(2),f(2)∣f(3),…f(​n−1)∣f(n).
Tuesday, May 14, 2013 at 12:27pm

Functions - Math - 8
x: 2 | 4 | 6 y: 1 | 0 | -1 Please show me how to find the rule, thanks. such as... y= *equation*
Tuesday, May 14, 2013 at 12:21pm

math
Billy kicks a soccer ball with an initial velocity of 24 ft/sec into the goal. How long was the ball in the air? If the goalie caught the ball at a height of 4 feet from the ground, how long was the ball in the air before it was caught?
Tuesday, May 14, 2013 at 11:51am

math
How do I set up the quadratic equation for this problem? 4.0= (2x)^2 / (1.0-x)(1.0-x) I know how to use the formula, but I have a hard time setting those equation to zero. Please explain step by step. Thank you
Tuesday, May 14, 2013 at 11:39am

Math~Polynomials
5)Find the degree of -5w-4w^2+7w+16(1point) -5 16 14*** 3 Ok I put stars next to my answer though I'm not sure if I'm correct.. or not so Steve could you tell me if my calculations are way off or if they are correct?....
Tuesday, May 14, 2013 at 11:38am

math
in 2010 i had 36 plums and in 2013 i now have 25 plums, what is the percentage of plums i have cut back on
Tuesday, May 14, 2013 at 10:49am

MATH
For what integer 0<n<1000, does the following system of n linear equations have no complex solution? −10a1a1a1⋮a1+a2−10a2+a​2+a2+a3+a3−10a3+a3+…+…+&​#133;+…+an+an+an−10an=9=99=99​9⋮=10n−1 ...
Tuesday, May 14, 2013 at 9:41am

Math pleaaaase help
A national math contest consisted of 11 multiple choice questions, each having 11 possible answers. Suppose that 111 students actually wrote the exam, and no two students has more than one answer in common. The highest possible average mark for the students can be expressed as...
Tuesday, May 14, 2013 at 5:25am

For a set of numbers T, we say that T has distinct subset sums if all distinct subsets of T have distinct sums. How many subsets of {1,2,3,4,5,6,7,8} have distinct subset sums? Details and assumptions The empty set (the set of no elements) has sum 0 by convention
Tuesday, May 14, 2013 at 5:24am

MATH
JOhn had prepared the problem sets for Levels 1 to 5 of Geometry and Combinatorics for next month but forgot to label which set was for which level. Since Calvin didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once...
Tuesday, May 14, 2013 at 4:09am

Math
An apprentice Carpenter has designed a wooden coffee table. he expects to sell 25 such tables for 95\$ each at an upcoming artisan market. by conducting a survey, he determines that for each \$2 reduction in the price of the table, he will likely gain three sales. a) an ...
Tuesday, May 14, 2013 at 4:08am

math
A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per second in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing 22 feet per second in ...
Tuesday, May 14, 2013 at 1:27am

math
A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per second in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing 22 feet per second in ...
Tuesday, May 14, 2013 at 1:27am

math
A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per secon in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing 22 feet per second in ...
Tuesday, May 14, 2013 at 1:27am

math
1. change to improper fraction: 9 5/9 2. change to improper fraction: 6 23/39 3. change the improper fraction to a whole number:115/20 4. multiply 4 3/4 x 1 1/7 5,subtract- 20 11/15- 17 1/3 6 2(-6)(-8)(0)(-5): multiply 7. solve for the variable: 0.1p=7
Tuesday, May 14, 2013 at 12:45am

Math
on Monday the temperature was -2 degrees. By 4:30 Tuesday the temperature dropped by 4 degrees. By 8am Tuesday, the temperature was 1 degree. therefore find: What was the temperature at 4:30am? What the temperature change between 4:30am and 8am?
Tuesday, May 14, 2013 at 12:25am

math
julia studied math for 3 1/3 hours during the 4 days before her last math test what was the average amount of time she studied each day
Tuesday, May 14, 2013 at 12:01am

math
I am a number with 2 more tens than one. I have 5 mores ones than hundreds. the sum of my digits is 18. What number I am?
Monday, May 13, 2013 at 11:31pm

Math(combinations) Help
Let Pn be the set of all subsets of the set [n]={1,2,…,n}. If two elements of P5 are chosen at random, the expected number of elements (of [n]) that they have in common can be expressed as a/b where a and b are coprime positive integers. What is the value of a+b?
Monday, May 13, 2013 at 11:12pm

Math
FRUIT PRICE: PINEAPPLE \$0.80 APPLE:\$0.10 PEAR:\$0.25 ORANGE:\$0.15 Mango:\$0.30 IF ELLIS HAS 3/10 OF A DOLLAR, WHICH TWO FRUITS CAN HE BUY?
Monday, May 13, 2013 at 10:33pm

Math
We have an important chemsitry test due and I want to make sure that I do not mess up on my algebra. I am dealing with the integrated rate law, but my question is purely algebraically in nature. I hope, somebody can help me. 1) ln(A) = -kt+ln(B) solve for t solve for k solve ...
Monday, May 13, 2013 at 10:33pm

Math~Polynomials
1)6g+8k-9g+2k(1point) 3g+10k -3g+10k*** 17gk 10k-3 2)-4x+6x^2+5x(1point) 7x^3*** 6x^2+9x 6x^2-9x 6x^2+x 3)a^2+5a-3a^2(1point) 5a+2a^2 -2a^2+5a*** -3a^2+6a 5a-3a^2 4)3x^2+8x+7x(1point) 3x^2+15x*** 18x^3 3x^2+1 3x^2-x 5)Find the degree of -5w-4w^2+7w+16(1point) -5 16 14*** 3 Plz...
Monday, May 13, 2013 at 9:53pm

Math
Bess is making pillows to decorate her bed. she is going to make three square pillows that are each 2 feet by 2 feet. she wants to use the same trim around each pillow.how many feet of trim will she need for all three pillow?
Monday, May 13, 2013 at 9:51pm

Math
By what percent is a 100-watt light bulb brighter than a 60-watt light bulb? Round to the nearest tenth. 40/60 = 2/3 = 2 ÷ 3 = 0.666667 0.666667 x 100 = 66.6667% Answer: 66.7% Is this correct?
Monday, May 13, 2013 at 9:40pm

Math
Find the amount in each case. 8% is 56 kg.
Monday, May 13, 2013 at 9:37pm

Math
Elijah draws shapes on his graph paper.He draws a square with sides 1/2 inch long. He draws an equilateral triangle with sides that are 1/4 inch long. What is another measurement that describes the length of the triangle's sides ? a. 2/1 inch b. 2/2 inch c. 2/8 inch d. 2/4...
Monday, May 13, 2013 at 9:29pm

Math
Explain It How is adding and subtracting with money like adding and subtracting whole numbers?
Monday, May 13, 2013 at 9:12pm

math
A car factory can produce 362 cars every 8 h. How many cars could the factory produce in 44 h?
Monday, May 13, 2013 at 9:04pm

math
anita earned \$475.54 in 2 weeks have earned the same amount of money each hour that she worked if anita worked a total of 62 hours during those 2 weeks about how much did she earn each hour?
Monday, May 13, 2013 at 9:04pm

math
Rohnda is in charge of buying food for the school picnic, she found that hot dogs are in packages of 24, buns in packages of 18, ketchup in boxes of 12, and mustard in boxes of 15. what is the least number of students that can be feed if each student receives 1 of each item ...
Monday, May 13, 2013 at 9:00pm

Math
What is the portion if the base is 900 and the rate is 12¾ %? P=RxB P=12.75x900 P=11,475 Is this correct?
Monday, May 13, 2013 at 8:16pm

math
The greatest common factor of 2 numbers is 14, the least common multiple is 168. If the 2 numbers are not 14 and 168, what is the sum?
Monday, May 13, 2013 at 7:45pm

Math
If you can write 5 pages each hour, at that rate, how many min. would it take you to write 2?
Monday, May 13, 2013 at 7:30pm

Math
5. The pet shop down the street owns 84 fish. The ratio of birds to fish is 3 to 7. How many birds are in the pet shop?
Monday, May 13, 2013 at 7:28pm

Math
Why did Airhead eat the dollar he brought to school
Monday, May 13, 2013 at 7:24pm

math
Monday, May 13, 2013 at 7:21pm

Math
Sunshine Honda sold 112 cars this month. If that is 40% greater than last month, how many cars were sold last month? x=112*100/140 x= 80 Answer: 80 Is this correct?
Monday, May 13, 2013 at 7:09pm

Math
Michael Reeves, an ice cream vendor, pays \$17.50 for a five-gallon container of premium ice cream. From this quantity he sells 80 scoops at \$0.90 per scoop. If he sold smaller scoops, he could sell 98 scoops from the same container; however, he could charge only \$0.80 per ...
Monday, May 13, 2013 at 7:06pm

Math
By what percent is a 100-watt light bulb brighter than a 60-watt light bulb? I'm not sure the equation to use to solve this one.
Monday, May 13, 2013 at 7:04pm

math
what is a pentagon
Monday, May 13, 2013 at 6:56pm

Math
Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.) Answer: 57.1% Is this answer correct?
Monday, May 13, 2013 at 6:52pm

Math
After a 15% pay raise, Scott Walker now earns \$27,600. What was his salary before the raise? Answer: 27600=.15x*27600 x=4140 27600-4140=23,460 Is my answer correct?
Monday, May 13, 2013 at 6:46pm

Math
A letter carrier can deliver mail to 112 homes per hour by walking and 168 homes per hour by driving. By what percent is productivity increased by driving? Answer: 56% Is my answer correct?
Monday, May 13, 2013 at 6:42pm

Math
If 453 runners out of 620 completed a marathon, what percent of the runners finished the race? (Round percent to the nearest tenth.) Answer: 453/620= .731 Changing to percent 73.1% Is this correct?
Monday, May 13, 2013 at 6:40pm

Math
I have to find the apothem of a triangle. It's a 60-60-60 triangle with sides of 6. Help!
Monday, May 13, 2013 at 6:06pm

math
How to tell 4/7 on a ruler
Monday, May 13, 2013 at 5:41pm

math
How to tell 4/7 on a ruler
Monday, May 13, 2013 at 5:28pm

math
what is the input,if the output is 17?
Monday, May 13, 2013 at 5:14pm

math
Koley makes \$4.00 per week for washing dishes. She pays her sister Amy \$0.75 each time Amy does the dishes for her. Is that fair? Please explain how I get the answer because I don't understand it/
Monday, May 13, 2013 at 5:06pm

Math
An airplane is flying at an altitude of 6 miles and passes directly over a radar antenna. When the plane is 10 miles away, the radar detects that the distance is changing at a rate of 240 mph. what is the speed of the plane? This is an implicit differentiation problem
Monday, May 13, 2013 at 4:57pm

Math
Your parents allow you to play video games for no more than 8 hours a week. You have already played for 2.5 hours this week. Write and solve an inequality that represents how much more time you can play video games this week. Graph the solution on a number line.
Monday, May 13, 2013 at 3:12pm

Math
A person who weighs 130 pounds can burn about 300 calories per hour skateboarding. Write a function that relates the calories burned, c, to the number of hours, h, spent skateboarding. Identify the independent and dependent variable. Create a function table for values of h ...
Monday, May 13, 2013 at 3:11pm

Math
Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that are not integers.
Monday, May 13, 2013 at 3:11pm

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