Hadeel
This page lists questions and answers that were posted by visitors named Hadeel.
Questions
The following questions were asked by visitors named Hadeel.
A 65kg boy and his 40kg sister, both wearing roller blades, face each other at rest. The girl pushes the boy hard, sending him backwards with a velocity of 2.9m/s towards the west. Ignore friction. What is the minimum amount of chemical energy is converte...
14 years ago
A red car with a 70kW engine and a mass of 1335kg accelerates at full power for 2s from rest along a level stretch of road heading east before going down a 3m high hill. The driver puts the car in neutral to accelerate as they coast down the hill. Some di...
14 years ago
Andre wants to buy a backpack. The normal price of the backpack is $40. He notices that a store that sells the backpack is having a 30% off sale. What is the sale price of the backpack?
5 years ago
Lin and Noah are solving the equation 7(x+2)=91. Lin starts by using the distributive property. Noah starts by dividing each side by 7. Show what Lin's and Noah's full solution methods might look like. What is the same and what is different about their me...
5 years ago
A musical instrument company reduced the time it takes for a worker to build a guitar. Before the reduction it took 5 hours. Now in 7 hours they can build 3 guitars. By how much did they reduce the time it takes to build each guitar?
5 years ago
A club puts its members into 5 groups for an activity. After 7 students have to leave early, there are only 3 students left to finish the activity. How many students were in each group?
5 years ago
Here are two stories: The initial freshman class at a college is 10% smaller than last year’s class. But then during the first week of classes, 20 more students enroll. There are then 830 students in the freshman class. A store reduces the price of a comp...
5 years ago
Is it illegal for guys to hit women? whyy????
5 years ago
Janie has $3. She earns $1.20 for each chore she does and can do fractions of chores. She wants to earn enough money to buy a CD for $13.50. Write an inequality to determine the number of chores, c Janie could do to have enough money to buy the CD.
5 years ago
Mustafa, Heloise, and Gia have written more than a combined total of 22 articles for the school newspaper. Heloise has written 1/4 as many articles as Mustafa has. Gia has written 3/2 as many articles as Mustafa has. Write an inequality to determine the n...
5 years ago
Answers
The following answers were posted by visitors named Hadeel.
its 30!!
14 years ago
@drwls: The "elastic" part was a typo because it says "in elastically" above; an unnecessary space was put in. With regards to the KE loss not necessarily ending up on the brake drums, I'd say that you are correct, but this looks to be an idealised proble...
14 years ago
is it $28
5 years ago
do i than have to divide 10/5.
5 years ago
What does the solution mean
5 years ago
In the equation
5 years ago