MATHEMATICS MIDDLE SCHOOL

I don't understand how to do this can someone pls help me
I don't understand how to do this can someone pls - 1

Answers

Answer 1
Answer: Take 2^30(gigabyte) and plug into a calculator
then take 2^20(megabyte) and plug into calculator
divide
1024

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Ann buys a pencil for 45 cents. Draw and label coins Ann could use to make 45 cents.

Answers

Ann could have many ways of buying this pencil:

45 pennies
9 nickels
1 quarter and 2 dimes
1 quarter, 1 dime, and 2 nickels
1 quarter, 1 dime, and 10 pennies
3 nickels and 30 pennies
1 dime, 1 nickel, 1 quarter, and 5 pennies

If you need any more, comment below! :)

Disjoint subsets A and B of a universal set U, except assume that n(U)=120, n(A)=45, and n(B)=50.Then n(A′∪B)=

Answers

Answer:

 n (A'  U  B )  = 75

Step-by-step explanation:

Here, given :  n(U)=120, n(A)=45, and n(B)=50

As we know:

n (A ' U B)  =  n(A) − n (A∩B)   ... (1)

Here, n(A) = 45

So, n( A')  = n(U) - n(A)  = 120 - 45  = 75

⇒ n(A')  = 75

Now, as given A and B are disjoint sets.

⇒   n (A ∩ B)   = Ф

So, (A'  U  B )  = A'

So, n (A'  U  B )  =n( A') = 75

⇒  n (A'  U  B )  = 75

Margot wants to use partial products to find 22x17. Write the number in the boxes to show 22x17

Answers


154
( 7×2 + 7×2+1 )

22
( 1×2 is 2 and 1×2 is 2 )

Add all together and get 174. :))

Final answer:

To solve 22x17 using partial products, break down 22 and 17 into the sums of their place values. Find the partial products and add them together for a total of 374.

Explanation:

To solve the math problem 22 x 17 using partial products, you first break down the numbers 22 and 17 into their tens and ones place values. Thus, 22 is 20 + 2, and 17 is 10 + 7.

Then, you find the four partial products: (20 x 10), (20 x 7), (2 x 10), (2 x 7) which are 200, 140, 20, and 14 respectively.

You then add those products together: 200 + 140 + 20 + 14 = 374. So, 22 x 17 equals 374.

Learn more about Partial Products here:

brainly.com/question/896024

#SPJ12

A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards, the carpenter notices that he has enough pieces left over to make up the same length as 4 of the original boards. How many boards did the carpenter start with?

Answers

4 of the original boards have a summed length of 20 units. 5 x 4 = 20.
Since 2/5 is left from each board, you simply add them until the 2's add to 20.

So, 2 x 10 = 20. Hence, there are 10 2/5 boards.

That's just 4 of the boards that the 2/5 make up, but that should also mean that there are 10 3/5 boards as well.

30/5 + 20/5 = 50/5
Reduction = 10

The carpenter started with 10 5/5 boards.
:D

How can i be math teacher when i grow up?

Answers

Well... you would have to start studying really hard in 7th grade and make sure you keep getting straight As. Behavior is important too. Then... you would have to get into a college where you can major in math... so yeah. Good luck if you plan on doing this! 
If you want to be a math teacher, first of all, you should be able to do math problems with no trouble at all, the problems will depend on what level you are going to teach.You must also be able to explain each and every step with patience because being a teacher can be stressful due to the lack of intelligence of some students.

Carmen by the pack of cards for $0.75 from the vending machine she puts a $1 bill and the Machine what combinations of coins including pennies could Carmen get in change

Answers

Ah, textbooks. Always those type of word problems. Sigh...
.
What's $1.00 - $0.75? 
.
It's $0.25.
.
What combinations?
.
Pennies, nickels, dimes, and a quarter.
.
Quarter is 1. Let's rule it out.
.
Pennies, nickels, and dimes.

Twenty Five Pennies.
Five Nickels.
One Dime, three Nickels.
One Nickel, two Dimes.
One Nickel, twenty Pennies.
One Dime, fifteen Pennies.
Two Nickels, fifteen Pennies.
Two Dimes, five Pennies.
One Dime, two Nickels, five Pennies.
Four Nickels, five Pennies.
One Nickel, one Dime, ten Pennies.
Three Nickels, ten pennies.

12 ways.

Including the quarter, we have 13.

OH NO IT'S 13!! RUN!!

Just kidding.

Hope this helped!

Answer:

Step-by-step explanation:
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