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3 years ago

Help pleaseeee pleaseeee pleaseeee

Mathematics

1 answer:

Murljashka [212]3 years ago

4 0

We have the same workbook lol
The answer is
Drums: 2/4
milks 4/9
(unless your teacher wants it improper.)

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Clay has 5 pounds of beef. How many 8 ounce servings does he have? *

saul85 [17]

Answer:

10 servings

Step-by-step explanation:

5 pound= 80 ounce

80/8=10

4 0

3 years ago

Read 2 more answers

If the Math Olympiad Club consists of 11 students, how many different teams of 3 students can be formed for competitions?

vivado [14]

Answer:

165 different teams of 3 students can be formed for competitions

Step-by-step explanation:

Combinations of m elements taken from n in n (m≥n) are called all possible groupings that can be made with the m elements so that:

Not all items fit
No matter the order
Elements are not repeated

That is, a combination is an arrangement of elements where the place or position they occupy within the arrangement does not matter. In a combination it is interesting to form groups and their content.

To calculate the number of combinations, the following expression is applied:

$C=\frac{m!}{n!*(m-n)!}$

It indicates the combinations of m objects taken from among n objects, where the term "n!" is called "factorial of n" and is the multiplication of all the numbers that go from "n" to 1.

In this case:

n: 3
m: 11

Replacing:

$C=\frac{11!}{3!*(11-3)!}$

Solving:

$C=\frac{11!}{3!*8!}$

being:

3!=3*2*1=6
8!=8*7*6*5*4*3*2*1=40,320
11!=39,916,800

So:

$C=\frac{39,916,800}{6*40,320}$

C= 165

<u><em>165 different teams of 3 students can be formed for competitions</em></u>

3 0

3 years ago

What is the common difference between the terms in this arithmetic sequence? 8,15,22,29,36..

trapecia [35]

Answer:

Step-by-step explanation:

just subtract 7 from largest number down to smaller numbers to notice the pattern. :)

5 0

3 years ago

What is the magic square of 1,7,9

Vilka [71]

719

1 7 9

Now, other answerers have pointed out that the middle number is 5, so the 9 should go on the bottom rather than the bottom-right, in which case the completed magic square looks like this:

672159834

6 1 8 7 5 3 2 9 4

But that's only for a magic square with the numbers 1 to 9. If you thought a little outside the box, you might wonder whether you could do it with other numbers.

We can use some algebra to show that this is still impossible. Let's suppose the number 1 isn't filled in, and the middle number is

, like so:

7 x 9

One of the properties that all 3-by-3 magic squares have is that the rows, columns, and diagonals add up to 3

(3 times the middle number). So we can fill in some of the other numbers with respect to

, by subtracting 3

from them:

2−972−79

2x−9 7 x 2x−7 9

And then solve for the other two corner squares:

2−97+2−22−79

2x−9 x−2 7 x 2x−7 x+2 9

And finally solve for the last two edge squares.

2−97+2112−11−22−79

2x−9 11 x−2 7 x 2x−7 x+2 2x−11 9

Huh? It turns out that no matter what the middle number

is, if the 7 and 9 are placed where they are, the top square has to be 11. The fact that it was filled out as 1 means that the magic square contradicts itself.

But then again... if you think a little further outside the box, who said that the filled-in squares had to remain unmodified? If you draw another 1 next to the existing 1 in the top square, you get 11 as required.

So... do that. Then, fill in any single number on any square and the rest of the numbers will work themselves out like magic. You can ask your teacher for that can of soda now ;-)

...except not really. Your teacher probably still expects a solution with distinct positive integers (whole numbers that are all different). There exists one, but I'll leave it to you to figure it out on your own since you seem to want to do as much of this as you can by yourself.

Hope this helps!!!

4 0

3 years ago

The ratio of boys to girls in a club is 4:5 what fraction of the club are boys

Mazyrski [523]

Answer:

4/9 are boys

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers