Answer: 25.8
may or may not be wrong
Step-by-step explanation:
The answer is 28 years
At = A0 * e^(-k * t)
At = 12 g
A0 = 15 g
k = 7.9 × 10^-3 = 0.0079
t = ?
12 = 15 * e^(-0.0079 * t)
12/15 = e^(-0.0079 * t)
0.8 = e^(-0.0079 * t)
Logarithm both sides (because ln(e) = 1:
ln(0.8) = ln(e^(-0.0079 * t))
ln(0.8) = (-0.0079 * t) * ln(e)
-0.223 = -0.0079 * t
t = -0.223 / -0.0079
t = 28.23
t ≈ 28 years
If i toss a die, first there are six sides on the die,
so the probability of it facing up to 1 is 1/6
facing up to 2 is 2/6 = 1/3
facing up to 3 is 3/6 = 1/2
am even number = the even numbers are 2,4,6 so the probability of getting an even number is 3/6 = 1/2
Answer:
q = -4
q = -5/9
Step-by-step explanation:
Hi!
To solve this question, we can use the zero product property.
<h2>What is the Zero-Product property?</h2>
The zero product property states that if one factor is equal to 0, then the whol equation is equal to 0.
We have (q+4)(9q +5) = 0
That means either q + 4 = 0, or 9q + 5 = 0.
Solve:
- 9q + 5 = 0
- 9q = -5
- q = -5/9
We can check both cases:
(-4 + 4)(-36 + 5) = 0
0(-31) = 0
0 = 0
(-9/5 + 4)(9(-5/9) + 5) = 0
(2.2)(-5 + 5) = 0
(2.2)0 = 0
0 = 0
The answer is subtract 0.75
Solution: 6-0.75=5.25
5.25-0.75=4.5 and so on
