Given that out of 30 planted seeds only 9 of the m sprouted, then:
Experimental probability =(number of occurrence of event)/(total number of trials made)
=9/30
=3/10
thus the number of seeds that will sprout given that 20 seeds we planted will be:
3/10×20
=6 seeds
Hello!
ANSWER:
36 students have a dog as a pet, and 30 students have a cat as a pet.
EXPLANATION:
Let's quickly convert these fractions to decimals by dividing their numerators by their denominators.
4 ÷ 5 = 0.8
2 ÷ 3 = 0.6666666667
Now, multiply the decimal forms by the number of students in Mrs. Hu's class.
0.8 × 45 = 36
0.(6)7 × 45 = 30
71/2 can also be written as 15/2, so divide 15/2 by 3/4. When you divide fractions you flip the second fraction and multiply it, so now it would be 15/2 X 4/3, so you would get 60/6 which is 10!
I will use a slot set up, and fill it in with the info given:
__ __ __ __ __ __ __
the first number can't be zero, this means there are 9 options for the first letter
for the 3 letters, there are 26 options for each letter
the last three numbers include 0, this means there are 10 options for each number
__ __ __ __ __ __ __
9 26 26 26 10 10 10
to account for all the options, the options for each slot should be multiplied
9 x 26 x 26 x 26 x 10 x 10 x 10 = 158,184,000 different licence plates possible