Answer:
c. 
Step-by-step explanation:
Given,
Number of bacterias who alive for at least 30 days = 5,
Bacterias who alive for 2 days = 10,
Died bacterias = 10,
Total bacterias = 5 + 10 + 10 = 25,
Ways of choosing a bacteria = 
= 
= 25,
While, ways of choosing of a bacteria who will live after 1 week = 
= 
= 5,
Hence, the probability it will still be alive after one week = 
=
OPTION C is correct.
Answer:
A number line goes from negative 10 to positive 10. An open circle appears at negative 9. The number line is shaded from negative 9 through positive 10.
Step-by-step explanation:
we have
Solve for x
Adds 7 both sides
Divide by -3 both sides
Remember that
When you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol
so
The solution is the interval (-9,∞)
therefore
A number line goes from negative 10 to positive 10. An open circle appears at negative 9. The number line is shaded from negative 9 through positive 10.
Answer:
c.33.08
Step-by-step explanation:
add all of them together and you get 140.7 divded by 5 and get 33.08
A graphing calculator shows the rocks are at the same height 1.5 seconds after they are released.
That height is 3.975 meters.
_____
f(x) = g(x)
-4.9x^2 +15 = -4.9x^2 +10x
15 = 10x . . . . . . . . . . . . . . . . . . add 4.9x^2
1.5 = x . . . . . . . . . . . . . . . . . . . divide by 10
f(1.5) = -4.9*2.25 +15 = 3.975
Answer: The correct answer is option B: 19%
Step-by-step explanation: The bar graph according to the question has the following set of data;
Cereal ----------34
Eggs and Bacon ----------21
Pastries ----------39
Bagels ----------48
Waffles ----------38
The total from this set of data is 180 (that is the summation of all the observed data). The portion taken up by cereals can be derived as follows;
Cereal = (34/180) x 360
Cereal = 68 degrees
Note that we have used degrees as the unit since the data would be transferred to a pie chart. Hence on the pie chart it occupies 68 degrees of the entire 360 degrees.
In order to find out what percentage this represents we can now express 68 degrees as a percentage as follows;
Cereal = (68/360) x 100
Cereal = 18.8888888
Cereal ≈ 19
Therefore cereal occupies 19 percent of the pie chart.
