Answer:
A factor of 30 is chosen at random. What is the probability, as a decimal, that it is a 2-digit number?
The positive whole-number factors of 30 are:
1, 2, 3, 5, 6, 10, 15 and 30.
So, there are 8 of them. Of these, 3 have two digits. Writing each factor on a slip of paper, then putting the slips into a hat, and finally choosing one without looking, get that
P(factor of 30 chosen is a 2-digit number) = number of two-digit factors ÷ number of factors
=38=3×.125=.375 as a decimal number.
Answer:
x = 1
y = -1
Step-by-step explanation:
A*B= (4y-8 3x-3)
1-) (4×2)+(3×y)= 3y+8
2-) (4×x)+(3×(-1))= 4x-3
AB=C
(3y+8 4x-3)=(5 1)
So
3y+8=5 ; y= -3/3 = -1
4x-3=1 ; x=4/4 =1
Answer:
300%.
Step-by-step explanation:
Suppose the population is 100, then it rises to 300 after one hour.
So the requires percent is (300/100) * 100
= 300%.
Answer:
7
Step-by-step explanation:
get the x on the same side.
subtract 2x from both sides
30=3x+9
then get the variables on one side by themselves. subtract 9 from both sides.
21=3x
now divide by 3 on both sides.
there's your answer.
Answer:
x=9/2
Step-by-step explanation:
