Answer:
42+t
q×10 or Q(10)
x+4
1/2y
Step-by-step explanation:
there are 42 members and their combined total would be the answer
Q is the number of members now, 10 is what you need to times it by in order to get the original number of members
the sister is 4 years younger than her brother, therfor he must be 4+ older than her
half of Y would be 1/2Y
Answer:
b
Step-by-step explanation:
Answer:
( -2, -2)
Step-by-step explanation:
plug in 2x+2 for y
4x + 2x + 2 = -10
6x +2 = -10
6x = -12
x=-2
y= 2(-2)+2
y = -4+2
y= -2
Answer: The sample is 13414 years old.
Step-by-step explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant= 100
a - x = amount left after decay process=
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for completion of 20% of reaction
The sample is 13414 years old.
Use a factor tree break the number down i to its greatest common factor and break it down until it cant be divided anymore.