Answer:
x=-5-2yi/3+4i
y=3xi/2+6+15i/2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
We are given with the rate of change of the base, db/dt equal to 1 ft/ sec and the rate of change of the height of the triangle, dh/dt equal to 2 ft/sec. b is 10 ft and h is 70 ft. Area of triangle is equal to A= 0.5 bh The rate of change of the area is equal to dA/dt = 0.5 b dh/dt + 0.5 h db/dt. Substituting, dA= 0.5*10*2 + 0.5*70 * 1 equal to 45 ft2 / sec.
Answer:
20 % decay
Step-by-step explanation:
Exponential equations are in the form
y = a * b^x
a is the initial value
b is the growth or decay
b>1 is growth b-1 rate of growth
b <1 decay 1-b rate of decay
1-.8 = .2
Change to decimal form
20 % decay
Answer:
240
Step-by-step explanation:
Because you have to do length times with times height
12 times 10 times 2= 240
The correct answer is B. random
Further explanation:
Let us define sampling first.
When the population is very large, a small portion of population is chosen to perform the experiments and examine the results.
There are multiple sampling techniques are used to draw samples out of the population.
<u>Random Sampling:</u>
In random sampling, the observations are chosen randomly which means that each observation has an equal chance of being selected.
In the given example, the teacher puts the names of students on papers and puts them in a bad. If she has to draw a name, each name has an equal chance of being drawn so the technique used by the teacher is simple random sampling.
The correct answer is B. random
Keywords: Population, Sampling
Learn more about sampling at:
#LearnwithBrainly
