![addisonrausch](/avatars/6422.jpg)
addisonrausch
21.08.2019 •
Mathematics
Mrs.kennedy is buying pencils for each 315 students at hamilton elementary.the pencils are sold in boxes of ten.how can she use rounding to decide how many pencils to buy?
Solved
Show answers
More tips
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Solve for x. Explain each step you took to solve this question. 30 (9x-3)...
- M Mathematics Use a histogram or box plot to determine the shape of the data. 61, 135, 217, 388, 354, 459, 512, 243, 440, 307The shape of the distribution is...
- M Mathematics If y varies directly as the square root of x and y=3, x=3. calculate y when x=64...
- M Mathematics Hello can some kind soul help me with this problem please...
- M Mathematics 0.064 jutaA 6400B 64 000C 640 000D 6 400 000...
- M Mathematics Check whether the solution exists or not, if it exists give the reason of existence and solve the system of equations. x + y + z = d x + (1 + d)y + z = 2d x + y + (1 +...
- M Mathematics Help me find the volume of the composite figure...
- M Mathematics porfavor los necesito resuelto lo más pronto posible porfavor...
- M Mathematics A sample of 100 clients of an exercise facility was selected. Let X = the number of days per week that a randomly selected client uses the exercise facility. X Frequency...
- M Mathematics Pleaseeeeeee helppppppppppppp...
Ответ:
But pencils are sold in boxes of 10
How can she use rounding in this given situation
315 = number of pencil she wants to buy
10 = number of pencils per box
=> 315 / 10
=> 31.5, Since she needs 315 pencils, she need to buy 31 boxes and half.
However, they are not selling half box. So Mrs. Kennedy needs to round off the number of pencils to buy to its nearest value.
Since the value next to the decimal points is 5, Mrs. Kennedy will round up.
Therefore, Mrs. Kennedy will now buy 32 boxes of pencils or equals to 320 pencils.
Ответ:
However, she has to buy the pencils in packs of 10. So, 315/10 = 31.5
But the problem is that she cannot buy half a box. And if she needs 315 pencils, she can not buy 31 packs because then she will need 5 more pencils. So it is better for her to buy 32 packs and get 5 extra pencils.
In questions like this, you need to always round up. Even if she needed 311 pencils, she would still have to buy 32 boxes.
Hope that helped :)
Ответ:
1) Kinetic energy of the truck 1 is 600,000 joules.
Kinetic energy of the truck 2 is 1,837,500 joules.
2 a)Potential energy of truck 1 is 646,800 Joules.
b) Energy lose by the truck 1 just got converted into heat and sound energy during the collision.
Step-by-step explanation:
Mass of the truck 1 and truck 2,m = 3000 kg
Velocity of the truck 1, = = 20 m./s
Velocity of the truck 2, = 35 m./s
1. Kinetic energy of the truck 1:
Kinetic energy of the truck 2:
2.a) Energy loose by the truck 1:
Initial height of the truck on the hill = 22 m
At that height potential energy will be maximum:
Potential energy of truck 1 at that height =
b) Energy lose by the truck 1 just got converted into heat and sound energy during the collision.