3 years ago

What percent of 65 is 13?

Mathematics

2 answers:

Mariana [72]3 years ago

4 0

The answer to the question is is 20%

Karo-lina-s [1.5K]3 years ago

4 0

So you set up your equation, $\frac{x}{100}$ · $\frac{13}{65}$
Cross multiply and get 1300=65x.
Divde both sides by 65, get x= 20
So, 13 is 20% of 65.
Hope this helps

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$\text{Let the coordinates of AB are }A(-5,-1), \text{ and }B(-2, -6)\\
\\
\text{let the coordinate of th point C be (x, y), such that}\\
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AC:CB=3:7\\
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\text{By the section formula, we know that if P(x,y) lies on a line segment AB}\\
\text{where, }A(x_1,y_1), \ B(x_2,y_2)\text{ and satisfy the ratio, }AP:PB=m:n, \text{ then}$

$P=\left ( \frac{mx_2+nx_1}{m+n}, \ \frac{my_2+ny_1}{m+n} \right ).\\
\\
\text{So using this formula, we get for the given problem}\\
\\
C=\left ( \frac{3(-2)+7(-5)}{3+7}, \ \frac{3(-6)+7(-1)}{3+7} \right )\\
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