You would take 20 × .2 and then take that awnser and add it to 20 dollars, then ÷that awnser by 2 and you will get your final amount. ( awnser: $12.00 )
Answer:
<em>of Carl's rocks are quartz or granite</em>
Step-by-step explanation:
<u>Proportions and Fractions
</u>
A proportion is expressed as a fraction a/b, where a and b are compared by division. If a=b, the proportion (or ratio) equals 1, if a<b, the ratio is less than 1, and if a>b, the ratio is greater than 1. The proportion of elements of a set to the total number of elements of the set is less than one, and the sum of all them equals 1.
We know 3/8 of Carl's rock collection are quartz and 1/3 are granite. If both subsets of rocks are mutually exclusive or disjoint (cannot happen simultaneously), then the proportion of both is the sum of the fractions.

Answer:
The GCF of 9 and 23 is 1.
Step-by-step explanation:
You can write the proportion as 2 equal fractions or as two equal ratios.
or 12 pens:$10 = x pens:$15You can buy x pens for 15 dollars. One way to find x is by cross multiplying the fractions.
10x=12×15
10x=180
----- -----
10 10
x=18
You can buy 18 pens for $15.
Answer:
35190
Step-by-step explanation:
90452-55235
35190