<u>Answer:</u>
57%
<u>Step-by-step explanation:</u>
We are given the results of survey of one thousand families to determine the distribution of families by their size.
We are to find the probability (to the near percent) that a given family has 3, 4 or 5 people.
Frequency of families with 3, 4 or 5 people = 200 + 245 + 125 = 570
Total frequency = 1000
P (families with 3, 4 or 5 people) = (570 / 1000) × 100 = 57%
Answer:
Bro cheating .
Step-by-step explanation:
imagine cheating
Answer:
Initial amount is 523 grams
Amount after 100 years is 52 grams
Step-by-step explanation:
General exponential function for radioactive substances is given by
A(t) = Ao(1/2)^t/t1/2
Where,
A(t) is the amount remaining after t years
Ao is the initial amount of the radioactive substance
t is the number of years required for the radioactive substance to decay to A
t1/2 is the half-life of the radioactive substance
Comparing A(t) = 523(1/2)^t/30 with the general exponential function
Initial amount (Ao) = 523 grams
A(t) = 523(1/2)^t/30
t = 100
A(100) = 523(1/2)^100/30 = 523×0.5^3.333 = 523×0.0992 = 51.8816 = 52 grams (to the nearest gram)
Answer:
<h2>D) (12 × 8) + (12 × 5)</h2>
Step-by-step explanation:
The distributive property: <em>a(b + c) = ab + ac</em>
<em></em>
We have 12(8 + 5).
Use the distributive property:
12(8 + 5) = (12)(8) + (12)(5) = (12 × 8) + (12 × 5)