Sometimes you have to simplify fractions after doing arithmetic with them. Cross-cancellation is a simplification that can be done before. simplifying before means when you do multiply, you'll have smaller numbers, and smaller numbers are easier to work with.
Answer:
1) Proportinal
2)Non Proportinal
3)Proportinal
Step-by-step explanation:
Answer:
$100
Step-by-step explanation:
First add up how much she spent
$115+75= $190
Then Subtract from how much she had to spend
$290-190= $100
hope this helps:)
Answer:
1/12
Step-by-step explanation:
subtract the four soloists who can't be chosen from the total musicians
16-4=12
Itzhak is one person out of 12 who could be chosen to speak
Also the question is annoying because nobody calls an orchestra with 16 people a "16 piece orchestra"
Answer:
1/5
Step-by-step explanation:
the prob that you will pick a blue marble would be 12/16, easy.
then the prob of picking a yellow marble after that would be 4/15 since one marble is already missing. multiply the numerator and denominator of each fraction. so 12 x 4 and 16 x 15 to get 48/240. then divide each by 48 to get 1/5.
