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3 years ago

Help please I don’t understand this question

Mathematics

1 answer:

Sonja [21]3 years ago

6 0

Answer:

What I can't see it properly

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100 points for correct answer

Tems11 [23]

Answer:

$\dfrac{x}{3}+\dfrac{3}{y}$

Step-by-step explanation:

<u>Given fraction</u>:

$\dfrac{xy+9}{3y}$

$\textsf{Apply the fraction rule} \quad \dfrac{a+b}{c}=\dfrac{a}{c}+\dfrac{b}{c}:$

$\implies \dfrac{xy}{3y}+\dfrac{9}{3y}$

Rewrite 9 as 3 · 3:

$\implies \dfrac{xy}{3y}+\dfrac{3 \cdot 3}{3y}$

Cancel the common factor y in the first fraction and the common factor 3 in the second fraction:

$\implies \dfrac{x\diagup\!\!\!\!y}{3\diagup\!\!\!\!y}+\dfrac{\diagup\!\!\!\!3 \cdot 3}{\diagup\!\!\!\!3y}$

$\implies \dfrac{x}{3}+\dfrac{3}{y}$

7 0

10 months ago

PLEASE HELP!! 25 POINTS!! WILL MARK BRAINLIEST!!

iris [78.8K]

Answer:

Step-by-step explanation:

7 0

2 years ago

Melissa has three different positive integers. She adds their reciprocals together and gets a sum of $1$. What is the product of

Whitepunk [10]

If the three integers are $a,b,c$ , then we have

$\dfrac1a+\dfrac1b+\dfrac1c=1$

We can combine the fractions on the left side:

$\dfrac{bc}{abc}+\dfrac{ac}{abc}+\dfrac{ab}{abc}=\dfrac{bc+ac+ab}{abc}=1$

$\implies abc=bc+ac+ab$

4 0

3 years ago

Read 2 more answers

Please help me with this problem. I am not sure if I am correct.

jek_recluse [69]

Answer:

only -7

Step-by-step explanation:

Just plug them in.

so for x=-7 $\sqrt{-2(-7)-5}=(-7)+4\\\sqrt{9}=-3 \\ 3=-3$ So this one is extraneous

Then if you plug -3 in you get 1 = 1 so this one is not extraneous. if you need me to work this one out let me know.

3 0

3 years ago

The Roman Numeral MCM means

GuDViN [60]

Answer:

See explanation below

Step-by-step explanation:

The Roman Numeral MCM means 1900.

The first M is 1000, CM means 900 ==> 1000 + 900 = 1900

8 0

2 years ago