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pishuonlain [190]
3 years ago
8

Consider the distribution of exam scores graded 0 from 100, for 79 students. When 37 students got an A, 24 students got a B and

18 students got a C. How many peaks would you expect for distribution?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

Three

Step-by-step explanation:

Assuming the grade score from 70 to 100 is A; for grade score from 60 to 69 is B and grade score from 50 to 59 is C. Well it is certain there are three peaks in the distribution of scores

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lutik1710 [3]
The answer is B. -32 this is a really easy question
8 0
4 years ago
Three vertices of a rectangle are (–2, 1), (–2, –3), and (4, –3)
Tpy6a [65]
The answer is C
it's easier if you graph it
we know that the x of the unknown vertice is 4, because this is a rectangle and that vertices has to be on the same x line as the point below.
y of the unknown vertice has to be 1 because the vertice to the left needs to be on the same y line as the unknown vertice

6 0
3 years ago
The expression (5 + 3) - (3 + 7) is a <br> sum. <br> product. <br> difference.
4vir4ik [10]
The answer would be Sum
6 0
3 years ago
Read 2 more answers
A solid metal cube of side 1-2 cm has a mass of 15 grams.
sashaice [31]

Answer:

The mass of the second cube is about 1085.07 grams.

Step-by-step explanation:

I assume '1-2 cm' means 1.2cm here. Correct me if I am wrong and I'll edit my answer.

First, find the density of this cube:

d=\frac{m}{v}

where d is density, m is mass, and v is volume.

We have one of those, but we also need volume. The volume of a cube is just:

v=a^3

where a is the length of a side.

\rightarrow v=1.2^3\\\rightarrow v=1.728

The volume of this cube is 1.728cm³. Now, you can find the density;

\rightarrow d=\frac{15}{1.728}\\\rightarrow d\approx8.6806

The density of this material is about 8.68 grams per cubic centimeter.

Finally, you can use that density to find the mass of the other cube. Fin the volume of the second cube:

\rightarrow v=5^3\\\rightarrow v=125

The volume is 125cm³. Given the density and the volume, you can calculate the mass:

\rightarrow d=\frac{m}{v}\\\rightarrow 8.6806=\frac{m}{125}\\\rightarrow 8.6806\times125=m\\\rightarrow m=1085.0694

The mass of the second cube is about 1085.07 grams.

4 0
3 years ago
The area of a square can be found using the equation A = s², where A is the area and s is the measure of one side of the square.
Galina-37 [17]
Hi there!

Let's use the given formula of a square (A = s^2), to figure out what the equation would be. We are looking for one side, or s here. 

WORK:
81 = s^2
squareroot(81) = s

ANSWER:
The second option, root 81.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
3 0
3 years ago
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