0 is the answer! that is because 62 is also the mean.
Answer:
The amount of sand builders need is 180 kg.
Step-by-step explanation:
It is given that the Bob the builder is making 480 kg on concrete mix. Concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4.
Let the amount of cement, sand and gravel is x, 3x and 4x respectively.
Since Bob the builder is making 480 kg on concrete mix, therefore
Divide both sides by 8.
The value of x is 60.
The amount of sand is 3x.
Therefore the amount of sand builders need is 180 kg.
Step-by-step explanation:
Continuous exponential growth model:
Where α is the growth rate parameter.
So if t is the starting point and t+t1 is the point that population is doubled:
So:
And as a result, t1, the time needed for the population to double at ANY given point is equal to:
Answer:
c
Step-by-step explanation:
c is the only one containing the number three, which is shown on the graph.
Answer:
40% decrease
Step-by-step explanation: