3 years ago

Find the rate of a discount sweater with a regular price of $39 that is on sale for $27

Mathematics

1 answer:

sammy [17]3 years ago

6 0

Just do 27/39 to find how much 27 is of 39, and then subtract that from 100 to get the percentage of discount.

27/39 is about 0.69

So the rate of discount is about 0.31

Hope this helps!

You might be interested in

I really need your help . And don’t worry this is just a practice :)

MariettaO [177]

Answer:

65/80 score

Step-by-step explanation:

3 0

3 years ago

Solve using quadratic formula<br> 6x^2-x=2

Nadya [2.5K]

$6x^2-x=2\implies 6x^2-1x-2=0 \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{6}x^2\stackrel{\stackrel{b}{\downarrow }}{-1}x\stackrel{\stackrel{c}{\downarrow }}{-2}=0 \qquad \qquad x= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a}$

$x = \cfrac{ -(-1) \pm \sqrt { (-1)^2 -4(6)(-2)}}{2(6)}\implies x = \cfrac{1\pm\sqrt{1+48}}{12} \\\\\\ x = \cfrac{1\pm\sqrt{49}}{12}\implies x = \cfrac{1\pm 7}{12}\implies x = \begin{cases} \frac{8}{12}\to &\frac{2}{3}\\[1em] -\frac{6}{12}\to &-\frac{1}{2} \end{cases}$