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Softa [21]
2 years ago
10

Does the following mapping diagram represent a function?

Mathematics
1 answer:
RUDIKE [14]2 years ago
3 0

Answer:

a

Step-by-step explanation:

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3 years ago
Solve 2x + 5y = 20; 3x - 10y = 37 by elimination. How do you do this? Thank-you!
mr Goodwill [35]

\left\{\begin{array}{ccc}2x+5y=20&\text{multiply both sides by 2}\\3x-10y=37\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+10y=40\\3x-10y=37\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad7x=77\qquad\text{divide both sides by 7}\\.\qquad\boxed{x=11}\\\\\text{Put the value of x to the first equation:}\\\\2(11)+5y=20\\\\22+5y=20\qquad\text{subtract 22 from both sides}\\\\5y=-2\qquad\text{divide both sides by 5}\\\\\boxed{y=-\dfrac{2}{5}}\\\\Answer:\ \boxed{x=11\ and\ y=-\dfrac{2}{5}}

6 0
2 years ago
Plzzz!!!!!!!! Help me !!!!!!!!!
Sergio039 [100]

Answer:

The answer after division is: 2\frac{2}{5}

Step-by-step explanation:

The given question involves two mixed fractions that are being divided.

7\frac{1}{2}\div 3\frac{1}{8}

First of all, we will convert the fractions into proper fractions

\frac{15}{2}\div \frac{25}{8}

When the division is performed, the second fraction is reversed

So dividing gives us:

\frac{15}{2} * \frac{8}{25}\\= \frac{3*4}{5}\\=\frac{12}{5} = 2\frac{2}{5}

Hence,

The answer after division is: 2\frac{2}{5}

3 0
2 years ago
Copy the proof on paper, mark the givens in the diagram, and fill in the blanks to complete the proof.
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Don’t use Brainly to get other people to do your work for you.
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3 years ago
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