Where's the question 12 a =
Answer:
6.25 gm left
Step-by-step explanation:
Find the number of half lives in 26.3 years
26.3 / 5.26 = 5 half lives
(1/2) ^5 = 1/32 nd of the original will be left
1/32 * 200g = 6.25 gm left
The probability that Edgar rolls a 2 on the first cube and a number less than 5 on the second cube is 1/9. Thus, the correct option is C.
<h3>What is Probability?</h3>
Probability helps us to know the chances of an event occurring.

There are a total of 36 outputs possible, while the number of desired outputs marked in the blue box is 4, therefore, the probability is,
Probability = 4/36 = 1/9
Hence, the probability that Edgar rolls a 2 on the first cube and a number less than 5 on the second cube is 1/9. Thus, the correct option is C.
Learn more about Probability:
brainly.com/question/795909
#SPJ1
Answer:
Step-by-step explanation:
Given the vectors based on the number line as RS = 7y +3, ST = 5y +8, and RT = 83, the equation RS+ST = RT will be used to get the unknown.
Substituting the given equation into the expression we will have;
7y +3+5y +8 = 83
collect like terms'
7y+5y+3+8 = 83
12y + 11 = 83
12y = 83-11
12y = 72
y = 72/12
y = 6
b) Substitute y = 6 into RS and ST
Given RS = 7y+3
RS = 7(6)+3
RS = 42+3
RS = 45
For ST;
ST = 5y+8
ST = 5(6)+8
ST = 30+8
ST = 38
Answer:
x=2 and y=3
Step-by-step explanation:
3x+2y=12
3(2) + 2(3)
6 + 6 = 12
12x+8y=48
12(2) + 8(3)
24+24=48