02/05/15
factor x^2 - 1
This is one of my homework questions, I understand factoring but I don't understand this one.
02/05/15
A rectangle has a length of (8-2x) and a width of 5. Find x so that the area of the rectangle is less than 30 by writing and solving a compound inequality.
Compound inequality?
02/05/15
Rudy is 42 years old. Write a inequality to represent at least 70% of his maximum heart rate if his maximum heart rate is 180.
i don't quite understand what this question is asking me to do. i know how to make an inequality, but i don't know how the 70% fits into the whole thing. i am in 7th grade non-honors math …..
02/05/15
Linear equation, y = mx + b
Ann is 2x years old, and Dave is 3y years old. Ann is 3 times older than Dave. H2 years later, if you add Ann's and Dave's age together then you will get 28. What is Ann's and Dave's age?
02/05/15
Find the different velocitys of the plane..
An airplane flying directly eastward at a constant speed travels 311 km in 2.0 h.
(a) What is the average velocity of the plane?
= ? km/h(b) What is its instantaneous velocity?
= ? km/h
02/04/15
Find the dimensions of a rectangle with a perimeter of 54 meters, if it's length is 3 meters less than twice it's width?
Find the dimensions of a rectangle with a perimeter of 54 meters, if it's length is 3 meters less than twice it's width
02/04/15
You have 15 blue socks and 20 green socks in a drawer. How many socks must you take from the drawer (without looking) to be sure of getting:
a.three socks of the same color?b. two socks with different colors?
02/04/15
use systems of linear equations in two variables to solve problems
Solve this problem using systems of linear equations in two variables:
Luis and Julia have the same number of coins. Luis has only dimes and Julia has only quarters. If Julia has $1.80 more...
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02/04/15
Challenging word problem.
Trying to help my daughter with her 4th grade math!!!
Two-thirds of Mr. Hussein's money is equal to 3/5 of Ms. Lee's money Ms. Lee has $20 more than Mr. Hussein. How much money do they have...
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02/04/15
The area of Stanley park in Vancouver is 391 hectares. The forested area is 141 hectares more than the rest of the park. What the area of each part of the park?
Must be solved without using a graph.
02/04/15
Stats word problem
2. A fair die is rolled twice. Find the probability of the following.a. rolling a sum of 10 on the two rollsb. rolling a sum not equal to 5 on the two rollsc. rolling a 2 first, then a 6d. rolling...
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02/04/15
Profits on Nissan Altima and Sentra average $1200 and $850 respectively. The total profits they sold 120 was $130350. Find the number of each type sold.
Profits on Nissan Altima and Sentra average $1200 and $850 respectively at one dealership. The total profits in a month in which they sold 120 of these models was $130350. Find the number of each...
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02/04/15
Several friends each had a 2/5 bag of peanuts at a game. They realized that they could have bought 2 fewer bags. How many friends went to the game?
this is a simple 4th grade word problem I'm trying to check if its correct.
02/04/15
Select the approximate values of x that are solutions to f(x)=0, where f(x) =-6x^2+4x+7
I have no idea how to figure this out. Please help :)
02/03/15
Application problems- More than one unkown
The larger of two numbers is 15 less than four times the smaller number. The sum of the two numbers is 65. Find the two numbers,
What are the numbers?(Use a comma to separate answers as needed)
02/03/15
If two dice are rolled, what is the probability of getting two numbers greater than 4?
1/3, 1/36, 1/6 or 1/9
02/03/15
The height of an object thrown upward with an initial velocity of 64 feet per second
The height of an object thrown upward with an initial velocity of 64 feet per second is given by the formula h = −16t2 + 64t, where t is the time in seconds. How long will it take the object to...
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02/03/15
there are five more dimes than quarters. if the coin purse contains $7.50, determine the number of dimes and the number of quarters in the coin purse.
A moms coin purse contains a mixture of dimes and quarters. There are 5 more dimes than quarters. If the purse contains a total of $7.50, determine the number of dimes and the number of quarters in...
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02/03/15
There are 16 girls in the Junior High Math Club. The girls make up 40% of the club. How many students are in the club?
There are no details to add.
02/03/15
What is the width and length
The width of a rectangle is 5 meters less than its length, and the perimeter is 26 meters. Find the length and width of the rectangle.
the product of two consecutive odd numbers is 323. find the numbers
Word problem leading to quadratic equations
02/03/15
Mr. Wiemann drove his truck 27 days in the past 6 weeks. He has traveled a distance of 9,558 miles. What was his average mileage for each day he drove?
Mr. Wiemann drove his truck 27 days in the past 6 weeks. He has traveled a distance of 9,558 miles. What was his average mileage for each day he drove?
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