When you divide a number by 1/2, the result is A) half the original number.
B) twice the original number.
C) 50% of the original number.
D) 100% of the original number.

Answers

Answer 1
Answer: Let us analyze the following situation: The number we want to divide by 1/2 is X. We can write:
X/(1/2)=(X/1)/(1/2)=(X*2)/(1*1)= X*2,
which means that the number that is divided with 1/2 is multiplied by 2 (twice the original number).
When you divide a number by 1/2, the result is twice the original number . Answer:B
Answer 2
Answer: When you divide a number by 1/2, the result is twice the original number . Answer:B

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Solve the equation 5m+4m=72

Answers

First of all we group our m's together. 
So first add
 5m + 4m = 9m 

Now lets set up our equation again 
9m = 72 .... divide both sides by 9 to get m alone
÷9  = ÷9 
************   now m is alone on the left side and we solve on the right side.
m = 8 

So your answer is 
m = 8 


Hello my friend

9m=72

Divide both sides by 9 so you can find the value for m

9m/9=72/9

m=8


I hope that's help:)

Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5 A. (5 + 6) + 4   B. (4 + 6) + 5   C. 4 + (6 + 5)   D. (5 + 4) + 6

Answers

im guessing that by making 10 it will speed up the addition process so it should be 
B since (6+4) = 10 then +5 =15
the answer is B becuase 6+4=10 10+5=15

The sum of two numbers is twenty. Three times the smaller is equal to twotimes the larger. Find the two numbers.

Answers

the smaller number is 8, and the larger number is 12, and they indeed add up to 20, and three times the smaller number (3 * 8) is equal to two times the larger number (2 * 12).

Let's call the two numbers x and y, with x being the smaller number and y being the larger number.

We have two pieces of information from the problem:

1. The sum of the two numbers is twenty:

  x + y = 20

2. Three times the smaller number is equal to two times the larger number:

  3x = 2y

Now, we can solve this system of linear equations.

First, we can solve equation (1) for x:

x = 20 - y

Now, substitute this expression for x into equation (2):

3(20 - y) = 2y

Now, distribute the 3 on the left side:

60 - 3y = 2y

Now, isolate the variables on one side of the equation and constants on the other side:

60 = 2y + 3y

Combine like terms:

60 = 5y

Now, divide by 5 to solve for y:

y = 60 / 5

y = 12

Now that we have found the value of y, we can substitute it back into equation (1) to find x:

x + 12 = 20

Subtract 12 from both sides:

x = 20 - 12

x = 8

So, the two numbers are:

x = 8 (smaller number)

y = 12 (larger number)

Therefore, the smaller number is 8, and the larger number is 12, and they indeed add up to 20, and three times the smaller number (3 * 8) is equal to two times the larger number (2 * 12).

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Answer:

The smaller number is 8

The larger number is 12

Step-by-step explanation:

Let the smaller number be x

Let the larger number be y

Translate the question and solve ;

x +y = 20\n3(x) =2(y) \n\n\begin{bmatrix}x+y=20\n 3x=2y\end{bmatrix}\n\n\mathrm{Isolate}\:x\:\mathrm{for}\:x+y=20:\quad x=20-y\n\n\mathrm{Subsititute\:}x=20-y\n\n\begin{bmatrix}3\left(20-y\right)=2y\end{bmatrix}\n\n\mathrm{Isolate}\:y\:\mathrm{for}\:3\left(20-y\right)=2y:\quad y=12\n\n\mathrm{For\:}x=20-y\n\n\mathrm{Subsititute\:}y=12\n\nx=20-12\n\nSimplify\n\nx =8\n\nx=8,\:y=12

Can someone please help me with all and can you tell me if my answer are right or not

Answers

1)Surface Area of rectangular box=166
2)Surface area= (9*6)+(9*8)+(10*9)+(6*8)=264 square meters
3)45 square ft
4)288.05 square cm
5)S.A of cylinder = 345.6 sq. cm
6)S.A of cylinder = 603.2 sq. ft
7)
S.A of cylinder = 276.5 sq.in
8)
S.A of cylinder = 353.4 sq. m
9) slant height = 15 inches

a school built a new gym the gym is rectangular and has an area of 6,000 square feet. if the gym is 100 feet long how wide is it

Answers

Using the formula of the area of the rectangle, the required width of the rectangular gym is 60 ft.

What is a rectangle?

A rectangle is a quadrilateral with four right angles in the Euclidean plane. It can also be defined as an equiangular quadrilateral since equiangular indicates that all of its angles are equal; or a parallelogram containing a right angle.

An enclosed 2-D shape called a rectangle has four sides, four corners, and four right angles (90°).

A rectangle has equal and parallel opposite sides.

A rectangle has two dimensions—length and width—because it is a two-dimensional form.

So, we know that the area is:

6000 ft²

And the length is 100 ft.

Then the width will be:

Area = l * w

6000 = 100 * x

x = 6000/100

x = 60 ft

Therefore, using the formula of the area of the rectangle, the required width of the rectangular gym is 60 ft.

Know more about a rectangle here:

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How would I solve 8^(3/2) * 2^(3/2) ?

Answers

the asnwer is 36 i think

the first mixed fraction would turn into 12 and the second would be 3, and 12 x 3 is 36