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Murljashka [212]

4 years ago

15

Which expression models this phrase? 27 decreased by the difference of a number and 3 A. (n – 3) – 27 B. 27 – n + 3 C. 27 – (n –

3) D. 27 – n – 3

2 answers:

inysia [295]4 years ago

7 0

The answer is c because you have to say 27 minus the number minus 3

Shtirlitz [24]4 years ago

7 0

The answer is six becuase well its simple

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8 pens cost £4.72<br> How much would 13 pens cost?

vesna_86 [32]

Answer:

$7.67

Step-by-step explanation:

So if 8 pens cost $4.72, one pen would cost $0.59. 0.59 x 13 will be equal to 7.67.

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3 years ago

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1 3/4 divided by 2 3/8<br><br> will give brainiest pls help

Ivanshal [37]

Answer:

$\frac{14}{19}$

First:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

$\frac{7}{4} \div \frac{19}{8}$

Applying the fractions formula for division:

$= \frac{7 \times 8}{4 \times 19}$

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Simplifying 56/76, the answer is:

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3 years ago

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Find the value of the variable y, where the sum of the fractions 6/(y+1) and y/(y-2) is equal to their product.

Blizzard [7]

Answer:

The answer is

$y = 3$

$y = - 4$

Step-by-step explanation:

We must find a solution where

$\frac{6}{y + 1} + \frac{y}{y - 2} = \frac{6}{y + 1} \times \frac{y}{y - 2}$

Consider the Left Side:

First, to add fraction multiply each fraction on the left by it corresponding denomiator and we should get

$\frac{6}{y + 1} \times \frac{y - 2}{y - 2} + \frac{y}{y - 2} \times \frac{y + 1}{y + 1}$

Which equals

$\frac{6y - 12}{(y -2) (y + 1)} + \frac{ {y}^{2} + y }{(y - 2)(y + 1)}$

Add the fractions

$\frac{y {}^{2} + 7y - 12 }{(y - 2)(y + 1)} = \frac{6}{y + 1} \times \frac{y}{y - 2}$

Simplify the right side by multiplying the fraction

$\frac{6y}{(y + 1)(y + 2)}$

Set both fractions equal to each other

$\frac{6y}{(y + 1)(y - 2)} = \frac{ {y}^{2} + 7y - 12}{(y + 1)(y - 2)}$

Since the denomiator are equal, we must set the numerator equal to each other

$6y = {y}^{2} + 7y - 12$

$= {y}^{2} + y - 12$

$(y + 4)(y - 3)$

$y = - 4$

$y = 3$

6 0

3 years ago

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I need help please help me !!!!

natita [175]

Answer:

C

Step-by-step explanation:

hope this helps :)))))

8 0

3 years ago

How to write 9/18 into a equivalent fraction

scoundrel [369]

There are many ways. $\frac{9}{18}$ is actually the same as $\frac{1}{2}$ so anything you do just has to have a numerator exactly half as the denominator. So one that would work is $\frac{18}{36}$ I just doubled both numbers. Other ones would be $\frac{5}{10} and \frac{6}{12}$ all of which the numerator is exactly half the denominator.

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4 years ago