What is the slope of the line that passes through the points (–2, 5) and (1, 11)? A.
-2
B.
1/2
C.
-6
D.
2
Answers
m=(11-5)/(1+2)=6/3=2
answer D
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Write 6,730,000 in scientific notation
Based on the graph above, what is the solution to this system.
every day for a week and collects data on their responses. Identify the population
and the sample. Give a reason why the sample could be biased.
Oa)
Population: All parents who respond to the survey
Sample: All parents with students at the school
Possible Bias: The parents who answered the phone may not be
representative of the whole population because younger parents are more
likely to answer the phone than older ones.
b)
Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Parents who are at home between 4:00 and 5:00 P.M. may not
be representative of the whole population.
Oc) Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Some parents do not like a particular teacher.
d)
Population: All parents who respond to the survey
Sample: All parents with students at the school
Possible Bias: Some of the people contacted did not answer every question
Answers
Answer: B
Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Parents who are at home between 4:00 and 5:00 P.M. may not be representative of the whole population.
A 2
B 82
C 1/2
D –82
Answers
each next element is divided on 2
Answer:
2
Step-by-step explanation:
-164/-84=2
-41//-20.5=2
so the answer is 2
B. Center
C. Circumference
D. Epicenter
Answers
The point in the middle of a circle called, B. Center
What are the circumference and diameter of a circle?
The circumference of a circle is the distance around the circle which is 2πr.
The diameter of a circle is the largest chord that passes through the center of a circle it is 2r.
We know, The largest chord that passes through the center of a circle is called a diameter.
All the other line segments that can be drawn with endpoints touching the circumference of a circle are called chords.
The radius is half the length of the largest chord(diameter).
A circle is defined as if we fix a point and mark points in a plane such that each point is equidistant from that fixed point a circle will be formed.
That fixed point is called the center of a circle.
learn more about circles here :
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Answer:
center
Step-by-step explanation:
A.
10
B.
11
C.
21
D.
31
Answers
the answer is D.31 because 21+10=31
hope i helped
Answer:
d just know it bc i did this
Step-by-step explanation:
B. the points scored by a basketball player compared to his minutes played
C. the height of a woman compared to her age
D. the hours of daylight in a city throughout the year
Answers
The hours of daylight in a city throughout the year represent the negative linear correlation coefficient. Then the correct option is D.
What is a negative linear correlation coefficient?
Independent quantities with an inverse relationship tend to move in different directions.
In essence, any figure between 0 and -1 denotes an opposing movement of the equity stocks.
When the correlation coefficient becomes less than 0, there is a negative (opposite) correlation. This suggests that both parameters are moving in the obverse direction.
The hours of daylight in a city throughout the year represent the negative linear correlation coefficient
Then the correct option is D.
More about the negative linear correlation coefficient link is given below.
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Answer:
D. the hours of daylight in a city throughout the year
Step-by-step explanation:
Answers
Rate of gaining altitude is ratio of height gained to time spent. The rate at which the plane is gaining altitude is 130.9 miles per hour.
How to measure the rate of change of something as some other value changes?
Suppose that we have to measure the rate of change of y as x changes, then we have:
where we have
Remember that, we divide by the change in independent variable so that we get some idea of how much the dependent quantity changes as we change the independent quantity by 1 unit.
(5 change per 3 unit can be rewritten as 5/3 change per 1 unit)
For the given case, the rate at which the plane is gaining altitude is the ratio of the height it gains per unit time(here per hour).
Referring to the diagram attached below, as he will walk 475 miles per hour(which is constant, this can be taken as hypotenuse's length.
The length BC is the height the plane gain each hour as he covers 475 miles in slantdirection.
Using the sin ratio, and measuring from the angle A, we get:
Thus, the height gained by plane per hour is 130.9 miles.
Rate of height gaining = (new height - old height)/(1 hour)
Rate of height gaining = (old height + 130.9 miles - old height)/1 hour
Rate of height gaining = 130.9 miles per hour.
This is the rate at which the plane is gaining altitude(since it is ratio of how much height it gains to how much time is spent gaining that height)
Hence, The rate at which the plane is gaining altitude is 131.1 miles per hour.
Learn more about trigonometric ratios here:
Answer:
130.9 miles per hour.
Step-by-step explanation:
sine 16 = x / 475 where x = rate of gaining altitude.
x = 475 sin 16
= 130.9 miles per hour.