Question

Both and tell why pls……..

Answer 1

Answer:

4) A

5) E

Step-by-step explanation:

#4

$\frac{x}{y}=\frac{1}{10} * \frac{z}{y}$

$\frac{x}{y} =\frac{1z}{10y}$

Cross multiply the equation and you get:

$10xy=zy$

Since $\frac{a}{b}=\frac{c}{d}$  is the same thing as $ad=bc$, you can change the equation into $\frac{x}{z} =\frac{y}{10y}$

Cancel out the y on the top and bottom and you get 1/10

#5

$\frac{2}{3} *\frac{x}{2} =5$, simplify and you get $\frac{x}{3} =5$ so x=15

$\frac{1}{5} * 3(x)$ is equal to $\frac{1}{5} *3(15)$ after you plug in x, and that is equal to 9