Step 1; First, we must convert the mixed fractions into improper fractions. To do that we multiply the whole number with the denominator and add with it the numerator while the denominator remains the same. To convert this fraction 1 $\frac{5}{8}$ , we multiply 1 with 8 and then add 4 and keep the 8 as the denominator so we get

1 $\frac{5}{8}$ = (1 × 8) + 5 / 8 = $\frac{13}{8}$ .

Step 2; After conversion, it's just a matter of subtraction. To calculate the clay she used for her project, we subtract the clay she had after from the clay she had before doing the project. While subtracting two fractions, if denominators are equal we subtract the numerators and keep the denominator the same.

$\frac{13}{8}$ - $\frac{6}{8}$ = $\frac{13-6}{8}$ = $\frac{7}{8}$ .

So Breanna used $\frac{7}{8}$ pounds of clay for her project.

3 0

4 years ago

Suppose you have a jar with 14 red marbles and 26 black marbles. You randomly select a marble from the jar without replacement.

ladessa [460]

Alright well if you pulled out a blue marble on the second go then you can make the connection that you had originally pulled out a black marble on the first go.

so the probability of pulling out a blue marble on the second go is 13/52

"13" is the original number of blue marbles added after selecting the black marble
"52" is me simply add up all the marble in the bag..the 14 red marbles, 26 black marbles minus the 1 pulled out and not replaced so now its 25 and the 13 blue marbles added last.<span />

4 0

3 years ago