MATHEMATICS MIDDLE SCHOOL

In a class of 32 students the mean height of the 14 boys is 1.56 m
the mean height of the 32 students is 1.515 m
work out the mean height of the girls

Answers

Answer 1
Answer:

Answer:

The answer is 1.48

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Josh buys cucumbers that cost $0.62 per pound.He pays $2.79 for the cucumbers.Part A Josh estimates he bought 5 pounds of cucumbers.Is Josh's estimate reasonable? Explain.Part BHow many pounds of cucumbers did Josh actually buy? Show your work.
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What is the awnser to this question take 99.03 Subtract 48.8 Multiply by 9.6 add 42.7

Write and solve a system of equations to find the value of each variable

Answers

Answer:

Step-by-step explanation:

2x+5y=12

3x+4y=11

---------------

3(2x+5y)=3(12)

-2(3x+4y)=-2(11)

-----------------------

6x+15y=36

-6x-8y=-22

-----------------

7y=14

y=14/7=2

2x+5(2)=12

2x+10=12

2x=12-10=2

x=2/2=1

x=1, y=2. (1, 2)

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I just provided you an example of a system of equations and I already solved it for you.

There was a plate of cookies on the table. Amanda was hungry because she hadn't had breakfast, so sheate half the cookies. Then Beth came along and noticed the cookies. She thought they looked good, so she
ate a third of what was left on the
plate. Christine came by and decided to take a fourth of the remaining cookies with
her to her next class. Then Daniel came dashing up and took a cookie to munch on.
When Eva looked at the plate, she saw that there were two cookies left. She wondered how many cookies
were on the plate to begin with?

Answers

Answer:

10 2/3

Step-by-step explanation:

So in order to figure this out you have to work backwards. First, Daniel came and took a cookie. So when he took 1 there were 3 cookies available. Next Christine took one fourth of the cookies, meaning that the 3 available cookies are the remaining 3/4's. When she got there she took 1. Then Beth came and took 1/3. For it to be 3/3 there has to be 1 and 1/3 more cookies. Now there are 5 and 1/3 cookies. Amanda came and ate half of the cookies meaning that the amount of cookies we have now is the other half that she didnt eat. 5 and 1/3 plus 5 and 1/3 is 10 and 2/3. I hope this is correct.

Please help i dont undertand it

Answers

1/2 of the rectangle is shaded and they are looking for area so it would be 14 times 8 and to combine that it would be 1/2(14 times 8)=56
B
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In the rectangular prism above, BF = 20 units, EF = 11 units, and BC = 9 units. If the rectangular prism is divided into two parts by a plane parallel to face DCGH, which of the following best describes the resulting cross-section of the prism?A. a rectangle with a length of 20 units and a width of 9 units
B. a rectangle with a length of 11 units and a width of 9 units
C. a square with side lengths of 20 units
D. a rectangle with a length of 20 units and a width of 11 units

Answers

The right answer for the question that is being asked and shown above is that: "D. a rectangle with a length of 20 units and a width of 11 units." This is the statement that best describes the resulting cross-section of the prism

In a bin containing 500 marbles, 180 are red, 240 are blue, and 80 are green. In a bowl of 25 marbles scooped from this bin, how many would be expected to be green? A. 4 B. 8 C. 9 D. 12

Answers

A. 4 i think thats right

I have 4 factors. Three of them 1,2 and 10. What is my fourth factor?

Answers

if you do a "factor rainbow" 1 and 10 are on opposite sides meaning 10 is the greatest # in the rainbow thats what you want to get with 2 times something.... so 2 times 5 equals 10
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