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3 years ago

Help!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Sladkaya [172]3 years ago

8 0

Step-by-step explanation:

<h3>In Solving This You Need to Change It Into Improper Fractions First;</h3>

1 2/5×3 1/2

•You then multiply the 5 by the 1 and then add it to the 2 which is then going to be;

7/5× 3 1/2

•Then you multiply the 2 by the 3 and then add it to the 1;

7/5×7/2

•Then you proceed to multiply the first numerator by the second numerator and then also multiply the first denominator by the second denominator which will be;

14/10

After this you go on to simplify which is going to be;

7/5(NB: It was divided by two)

So mixed number in it's simplest form is going to be;

1 2/5

In Decimal form would have been; 1.4

Since the question is asking for mixed number in it's simplest form it's going to be;

1 2/5

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3 years ago

Is 24/40 equivalent to 3/5

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Answer:

Consider the expressions 32+1 and 5×2 . Both are equal to 10 . That is, they are equivalent expressions.

Now let us consider some expressions that include variables, say 5x+2 .

The expression can be rewritten as 5x+2=x+x+x+x+x+1+1 .

We can re-group the right side of the equation to 2x+3x+1+1 or x+4x+2 or some other combination. All these expressions have the same value, whenever the same value is substituted for x . That is, they are equivalent expressions.

Two expressions are said to be equivalent if they have the same value irrespective of the value of the variable(s) in them.

Example 1:

Are the two expressions 2y+5y−5+8 and 7y+3 equivalent? Explain your answer.

Combine the like terms of the first expression.

Here, the terms 2y and 5y are like terms. So, add their coefficients. 2y+5y=7y .

Also, −5 and 8 can be combined to get 3 .

Thus, 2y+5y−5+8=7y+3 .

Therefore, the two expressions are equivalent.

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Are the two expressions 6(2a+b) and 12a+6b equivalent? Explain your answer.

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