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IRINA_888 [86]
3 years ago
7

How to multiply decimals when not using models​

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0

Answer:

You multiply it like normal numbers. But when you do, count how many numbers are behind the decimal, say there are 2 numbers behind the decimal, once you finished multiplying the numbers you would add up all the products you got and then put the first 4 numbers you wrote behind the decimal to get the final product.

Step-by-step explanation:

Say you were multiplying 14.63 and 7.74

                 

                   14.63

<u>                    x 7.74                 </u><em>Always starting from the right side of the equation</em>

                   .5852                <em>go to the left </em> <em>four digits and put a decimal then                   </em>

<em>                   ↑←←←←                just carry the decimal down and you'll  end up with  </em>

                 10.2410              <em>the final product</em>

<u>             + 102.4100                </u>

               113.2362

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Jacks mother gave him 50 chocolates to give to his friends for his birthday party. He gave 3 chocolates to each of his friends a
labwork [276]

Answer:

3x+2=50

There are 16 friends at Jack's party.

Step-by-step explanation:

Please consider the complete question.

Jack's mother gave him 50 chocolates to give to his friends at his birthday party. He gave 3 chocolates to each of his friends and still had 2 chocolates left. Write an equation to determine the number of friends (x) at Jack's party. Find the number of friends at Jack's party.  

Since there are x friends at party, so chocolate given to x friends would be 3 times x (3x) because Jack gave 3 chocolates to each friend.

As Jack has 2 chocolates left after giving to his friends, so total numbers of chocolates would be 3x+2.

Now we will equate total number of chocolates by 50 as:

3x+2=50

Therefore, the equation 3x+2=50 can be used to find number of Jack's friends.

Let us solve for x.

3x+2-2=50-2

3x=48

\frac{3x}{3}=\frac{48}{3}

x=16

Therefore, there are 16 friends at Jack's party.

5 0
3 years ago
Please please help <br><br> Given the function f(x)=1/3x*2-3x+5 determine the inverse relation
yuradex [85]

The inverse relation of the function f(x)=1/3x*2-3x+5 is f-1(x) = 9/2 + √(3x + 21/4)

<h3>How to determine the inverse relation?</h3>

The function is given as

f(x)=1/3x^2-3x+5

Start by rewriting the function in vertex form

f(x) = 1/3(x - 9/2)^2 -7/4

Rewrite the function as

y = 1/3(x - 9/2)^2 -7/4

Swap x and y

x = 1/3(y - 9/2)^2 -7/4

Add 7/4 to both sides

x + 7/4= 1/3(y - 9/2)^2

Multiply by 3

3x + 21/4= (y - 9/2)^2

Take the square roots

y - 9/2 = √(3x + 21/4)

This gives

y = 9/2 + √(3x + 21/4)

Hence, the inverse relation of the function f(x)=1/3x*2-3x+5 is f-1(x) = 9/2 + √(3x + 21/4)

Read more about inverse functions at:

brainly.com/question/14391067

#SPJ1

5 0
2 years ago
What are the steps on how do you divide fractions using area models?
topjm [15]
Use keep, change, flip!
Ex: 1 / 3
— —
2 4

Keep the 1/2
Change the division sign to a multiplication sign
Flip the 3/4 to be 4/3

1 X 4
— —
2 3

Then, multiple and simplify as usual!

1 X 4= 4
2 X 3= 6

4 = 2
— —
6 3

The answer would be 2
—
3

Hope this helps, brainliest please! :)

6 0
3 years ago
Laura and Brent paddled a canoe 6 miles upstream in four hours. The return trip took three hours. Find the rate at which Laura a
Lisa [10]
That would be the average of total time paddled upstream & downstream . . . 12 miles / 7 hours = approx 1.71 miles per hr
3 0
3 years ago
Solve please help me ASAP
Ilya [14]

Answer:

31,360

Step-by-step explanation:

35 x 896 = 31,360 seats

8 0
4 years ago
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