What is 4 1/2 times 3

Mathematics

2 answers:

sammy [17]4 years ago

7 0

Answer: 13 and 1/2

Step-by-step explanation: To multiply a mixed number times a whole number, first write each of them as an improper fraction.

So we can rewrite 4 and 1/2 as the improper fraction 9/2

and we can write 3 as the improper fraction 3/1.

<em>If you've forgotten how to write a mixed number as an improper fraction, send me a message below and I will be happy to help you remember.</em>

So now we have 9/2 × 3/1 and we simply multiply across

the numerators and multiply across the denominators.

So we have 9 × 3 which is 27 and 2 × 1 which is 2.

So we have 27/2 which is an improper fraction so we need to rewrite it

as a mixed number. 27/2 is the same as 13 and 1/2.

<em>If you need a review on how to write an improper fraction as a mixed number, send me a message below and I will be happy to help you remember.</em>

So we have 13 and 1/2 which is in lowest terms so it's our final answer.

So 4 and 1/2 × 11 is 13 and 1/2.

Leya [2.2K]4 years ago

3 0

Answer:

13.5

Step-by-step explanation:

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Two brothers, Gethin and David, share a sum of money in the ratio 2:7.

Vitek1552 [10]

12£ and 42£

Step-by-step explanation:

gethin gets 2/9

David gets 7/9

total money is equal to 54

Gethin gets 54x 2/9=12

David gets 54x7/9=42

4 0

4 years ago

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Delvig [45]

So a area of a polygon is the perimeter * the apothem divided by 2
$\frac{P*a}{2} = A$
So lets find the perimeter first.
P = sn, where s is the length of a side and n is the number of sides
P = (12)(5) = 60

Now on to the apothem.
$a = \frac{s}{2tan(\frac{180}{n}) }$ s and n represent the same things as before
$a = \frac{12}{2tan(\frac{180}{5}) }$
That is approximately 8.258

Now that we have both the perimeter and the apothem, we can solve for the area.

$A=\frac{60*8.258}{2}$
A = 247.74