MATHEMATICS MIDDLE SCHOOL

Jill says that 12.6666666 is less than 12.63 explain Her error

Answers

Answer 1
Answer: Look at the last number in the decimal.

12.66
12.63

Compare 6 and 3. 6 is larger so therefore 12.6666666 is larger. (You also need to compare the tenths place too, but these happen to have the same tenths place, .6.

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Which of the following situations can be modeled by the equation n+0.50n-0.3n =1.2n, where n is the # of nickels originally in the jar?a. Amanda takes out 50% of the nickels in the jar on Friday and adds a number of nickels that is equal to 30% of the remaining number of nickels in the jar on Monday. There are 20% fewer nickels in the jar after Monday than before Friday. b. Amanda takes out 50% of the nickels in the jar on Friday and adds a number of nickels that is equal to 30% of the original number of nickels in the jar on Monday. There are 20% fewer nickels in the jar after Monday than before Friday.c. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the new number of nickels. There are 20% more nickels in the jar after Monday than before Friday.d. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the original number of nickels. There are 20% more nickels in the jar after Monday than before Friday.
Trina spent $30 for general admission at an amusement park. Each ride cost $2.50. She spent a total of $67.50. What arithmetic steps can you use to find how many rides Trina rode? A. Divide 67.5 by 2.5, add 30 to the quotient. B. Add 67.5 and 30, divide the sum by 2.5. C. Subtract 30 from 67.5, divide the difference by 2.5. D. Multiply 30 by 2.5, subtract 67.5.
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Liz wants to buy a shirt for $25. How much will Liz's shirt cost in Springfield rounded up to the nearest cent? (show your work) the tax in Springfield if 4.1%

Answers

This is similar to the markup price question. The tax is 4.1% or .041. We need to add the tax to the original price of the shirt. We know that the shirt cost $25.00 and that's also the original price. To add the tax to it, we add the .041 to 1.00

The reason for this is because multiplying 25 by 1 will get you 25. So, we know that 1.00 is the original price as a percentage. We need to add .041 of 25 to itself. We can do that by adding the original percentage 1.00 to .041 and get 1.041 This means that we're getting the original price plus the tax added with it.

So, 1.041 × 25 = 26.025 which rounds to $26.03 Hope this helped!

Answer:

1.041 × 25 = 26.025 which rounds to $26.03

Step-by-step explanation:

Write an expression that can be used to multiply 6 x 198 mentally? please answer thanks!

Answers

-6 x 2 + 6 x 200. Since you want to find out 6 multiplied by 198 the easiest way (for me) would be to round it and then substract 12 since 200-198 is equal to 2 and 6 x 2 is equal to 12
Assuming you meant 6 x 198... Do a mental sum for 6 x 200 (1200) then subtract 6

A rectangle prism has a length of 8 feet , a width of 3 feet , and a height of 5 feet. What is the surface area of the rectangle prism?

Answers

Answer:

Surface area of the rectangular prism = 158\,feet^2

Step-by-step explanation:

Surface area of a rectangular prism is:

      =2((Length* Width)+(Width* Height)+(Height* Length))

For,

Length=8\,feet\n\nWidth=3\,feet\n\nHeight=5\,feet

Surface area of the rectangular prism for the given dimensions is :

=2((8* 3)+(3* 5)+(5* 8))\n\n=2(24+15+40)\n\n=2(79)\n\n=158\,feet^2

Surface area of the rectangular prism = 158\,feet^2

Answer:

Answer is A = 158

Step-by-step explanation:

You can use the equation A = 2(wl + hl + hw)

What is 0.9 written as a fraction in simplest form

Answers

9/10 would have to be correct answer 
It would be 90/100
Which simplifies to 9/10

Numbers that follow a rule

Answers

you could do even numbers. 2,4,6,8,10,12,14,16,18,20 ect.
you could also do odd numbers 1,3,5,7,9,11ect.
You could do 10's 20's 100's go by 5's. 

A school is building a rectangular soccer field that has an area of 6000 yards. The soccer field must be 40 yards longer than it's worth. Determine algebraically the dimensions of the soccer field, in yards. Show/ explain work

Answers

Given, soccer field length is 40 m longer than width
lets consider width=w
 so, length = w+40
area = length*width=6000
(w+40)*w=6000
w^2 +40*w-6000=0;
w^2+(100*w-60*w) -6000=0
(w^2 + 100*w) - (60*w+6000)=0
w(w+100)-60(w+100)=0
(w+100)(w-60)=0
w=60, because width will not be '-100'
w=60 and L=60+40=100
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