Ms. Stephanie bought a package of pens. Out of every 10 pens, 1 are black. If there are 30 pens in the pack, what fraction of the pens in the pack are black? What percent of the pens in the pack are
black?
What fraction of the pens in the pack is black?

The fraction of the black pens in the pack is

The percent of the black pens in the pack is 10%

Step-by-step explanation:

If 1/10 pens are black, we can use this same proportion to find how many black pens will be in the pack of 30.

Using this, there will be 3/30 pens that will be black, since 3/30 is equivalent to 1/10 when reduced.

So, the fraction of the black pens in the pack is

To find the percent, divide 3 by 30:

3/30

= 0.1 (10 percent)

So, the percent of the black pens in the pack is 10%

probability for j is 1/4

while

a is 1/6

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.