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Softa [21]
3 years ago
12

In 2016, the mean score on the AP Statistics exam was 2.80, with a standard deviation of 1.35. The mean score on the AP Calculus

exam was a 2.86, with a standard deviation of 1.55. What is the combined mean and standard deviation for these exams?
Mean, 2.83; standard deviation, 0.2

Mean, 5.66; standard deviation, 2.9

Mean, 5.66; standard deviation, 2.055

Mean, 2.83; standard deviation, 2.9

Mean, 5.66; standard deviation, 4.225
Mathematics
1 answer:
Artemon [7]3 years ago
8 0

Answer:

benjamin is good 2-3x

Step-by-step explanation:

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devlian [24]
For the answer, see the picture attached.

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3 years ago
Use the graph to determine the function's domain and range. Explain your answer.
mixas84 [53]
The domain is defined as  all the possible x values. The graph extends to the left and to the right without bounds  so the domain is All Real Values of x.
It can also be written as   (-∞, ∞)  This is called interval notation.

Note that  the minimum value of f(x)  is -4  so the range is [-4, ∞).   (All real values of y equal to or greater than -4)

3 0
3 years ago
An obtuse triangle with area 12 has two sides of lengths 4 and 10. Find the length of the third side. (There are two answers.) (
mart [117]
This question can be solved using the Herons equation where 
A = SQRT [s*(s-a)*(s-b)*(s-c)]

A = area of the triangle
a, b and c are the sides of the triangle

s = (a+b+c)/2

Since we are given the area, we can express "s" as a function of the third side c. This can be substituted in the original equation so as to obtain an expression to solve for the third side c

s = (4+10+c)/2 = (14+c)/2

using the solver function of the calculator or MS Excel, the third side is 7.21 units
3 0
3 years ago
21. 6m – 2n+ 7<br> Terms:<br> Coefficients:<br> Constants:
harkovskaia [24]

Answer:

Terms: 6m , -2n, 7

Coefficients: 6, -2

Constants: 7

Step-by-step explanation:

terms are the parts of the expression so 6m, -2n and 7

coefficients are the numbers in fron tof variables so 6 and -2

constants are terms without variables so 7

7 0
3 years ago
sand falls from an overhead bin and accumulates in a conical pile with a radius that is always four times its height. suppose th
blagie [28]

Answer:

\frac{dv}{dt} =7239.168 cm/sec

Step-by-step explanation:

From the question we are told that:

Rate \frac{dh}{dt}=1cm

Height h=12cm

Radius r=4h

Generally the equation for Volume of Cone is mathematically given by

V=\frac{1}{3}\pi r^2h

V=\frac{1}{3}\pi (4h)^2h

Differentiating

\frac{dv}{dt} =\frac{16}{3}\pi3h^2\frac{dh}{dt}

\frac{dv}{dt} =\frac{16}{3}*3.142*3*12^2*1

\frac{dv}{dt} =7239.168 cm/sec

7 0
3 years ago
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