3 years ago

How old George Washington?? Pls lmk I need ASAP

Mathematics

1 answer:

arsen [322]3 years ago

7 0

Answer: 67 Years old

He lived from 1732-1799

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Two numbers add to 140. If you double the smaller number and halve the larger number, then the two resulting numbers are equal.

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3 years ago

The slope of a line is -1/2. what is the slope of a line that is perpendicular to it.

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I thought of a number, added 3 2/7 to it, then I multiplied the result by 1 1/2 , and got

horsena [70]

Answer:

$\frac{25}{21}$

Step-by-step explanation:

First let's convert the mixed numbers into improper fractions.

$3\frac{2}{7}=\frac{23}{7}$

$1\frac{1}{2}=\frac{3}{2}$

$6\frac{5}{7}=\frac{47}{7}$

Let the number be n, so we can write an equation from the word problem as:

$(n+\frac{23}{7})*\frac{3}{2}=\frac{47}{7}$

Now, we do algebra and solve for n:

$(n+\frac{23}{7})*\frac{3}{2}=\frac{47}{7}\\\frac{3}{2}n+\frac{69}{14}=\frac{47}{7}\\\frac{3}{2}n=\frac{47}{7}-\frac{69}{14}\\\frac{3}{2}n=\frac{25}{14}\\n=\frac{\frac{25}{14}}{\frac{3}{2}}\\n=\frac{25}{14}*\frac{2}{3}\\n=\frac{50}{42}\\n=\frac{25}{21}$

hence the number is 25/21

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4 years ago