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dalvyx [7]
2 years ago
7

Help 3/4× 2 1/4 plsss​

Mathematics
2 answers:
hammer [34]2 years ago
5 0

Answer:

Step-by-step explanation:

3/4 x 9/4 = 1.6875 or 27/16

lidiya [134]2 years ago
3 0

Answer:

1\frac{11}{16}

Step-by-step explanation:

When multiplying mixed numbers, you would want to turn them into improper fractions first before evaluating.

\frac{3}{4} × 2\frac{1}{4} = \frac{3}{4} × \frac{9}{4}

Now you can just directly multiply the fractions (denominators with denominators and numerators with numerators)

\frac{3}{4} × \frac{9}{4} = \frac{27}{16}

You know that is still an improper fraction, so you need to turn it back to a mixed number.

\frac{27}{16} = 1\frac{11}{16}

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What is the algebraic expression for the quotient of z and 3
Zielflug [23.3K]
The quotient of z and 3.

quotient = ÷

z/3

The answer is A.
4 0
3 years ago
Mr. Baker wants to divide his class into smaller, equal-sized groups of students.However, he finds that his class cannot be divi
Elis [28]

Answer:

Prime. Prime numbers can only be divided by the whole number, or one.

6 0
2 years ago
What is the quotient of 2 3/4 and 5 1/2?
Juli2301 [7.4K]

Answer:

  1/2

Step-by-step explanation:

This can be done several ways. Perhaps the easiest is to use the decimal equivalents:

  (2 3/4)/(5 1/2) = 2.75/5.5 = 0.5

__

If you want to use the numbers given, the usual procedure is to convert them to improper fractions and do the division that way:

  2 3/4 = (4·2 +3)/4 = 11/4

  5 1/2 = (2·5 +1)/2 = 11/2

Now, the problem can be written as ...

  (2 3/4) / (5 1/2) = (11/4) / (11/2)

This sort of division problem can be solved two ways:

  <u>invert and multiply</u> (the denominator is inverted)

  = (11/4) × (2/11) = (11·2)/(11·4) = 2/4 = 1/2

  <u>use a common denominator</u> (for the two fractions)

  = (11/4) / (11/2) = (11/4) / (22/4) = 11/22 = 1/2

The quotient is 1/2.

_____

<em>Additional comments</em>

It is helpful in many cases to just use decimal equivalents for the calculation. To do that, you need to be familiar with the equivalents of commonly used fractions. I find it is usually sufficient to know the unit fractions in each case. Then you can multiply or add to find the others.

1/9 = 0.1...(1-digit repeat), 1/8 = 0.125, 1/7 = 0.142857...(6-digit repeat), 1/6 = 0.16...(1-digit repeat), 1/5 = 0.2, 1/4 = 0.25, 1/3 = 0.3...(1-digit repeat), 1/2 = 0.5

__

I learned the "invert and multiply" method for dividing fractions when I was in school. The Common Core math apparently also teaches the method of matching the denominators of a compound fraction. Then the result is the ratio of numerators. (A variation not taught is that you can match the numerators and use the inverse of the ratio of denominators. Both of these methods can be validated using the "invert and multiply" method. (11/4)/(11/2) = 2/4)

"Invert and multiply" is another way of saying that division is the same as multiplication by the reciprocal. This applies everywhere, not just in fraction problems.

8 0
3 years ago
Is my answer right? the other options are <br><br> A.0.33<br> B.0.42<br> C.0.58<br> D.0.67
Fittoniya [83]
Yes 0.42 is correct!!
4 0
3 years ago
Help help help help math math math
olasank [31]

Answer:

27 in²

Step-by-step explanation:

The area (A) is calculated as

A = πr² ( r is the radius ) , then

A = π × 3² = 3 × 9 = 27 in²

5 0
2 years ago
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