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Tju [1.3M]
3 years ago
9

Scores on an AP Exam at a local high school are recorded in the table. What was the average score?

Mathematics
1 answer:
Volgvan3 years ago
3 0
2(3) + 3(4) + 4(16) + 5(22)
Multiply
6+12+64+110
Add
192
Divide by the total amount of testers
192/((3+4+16+22))
192/45
Divide
About 4.22

Because all the scores are whole numbers, the average score is a 4

I hope this Helps!
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Use the figure to complete the statements.
Eddi Din [679]

Answer:

16

10

160

Step-by-step explanation:

The base also known as the right space is 16 because its labeled!

The height is also Labeled as 10.

Now all you have to do is 10 x 16 which equals 160!

Sorry I'm late!

3 0
3 years ago
Is the set \mathbb{Z} a group under the operation a*b = a - b + ab ? Justify your answer.
Daniel [21]

Answer:

Step-by-step explanation:

Given that *is the binary operation in the sets of integers.

a*b = a - b + ab

closure: a-b+ab is again an integer belongs to Z.  Hence closure is true.

Associativity: a*(b*c) = a*(b+c-bc)\\= a-b-c+bc+ab+ac-abc\\= a-b-c +ab+bc+ca-abc

(a*b)*c=(a+b-ab)*c\\=a+b-ab-c+ac+bc-abc\\

The two are not equal.  Hence this cannot be a group as associtiavity does not hold good.

7 0
3 years ago
Which one is it, I need help
Y_Kistochka [10]

Answer:

Their y-intercepts are equal

Step-by-step explanation:

The y-intercept is the y-value where the function crosses the y-axis. In this problem, functions are presented in 2 ways: algebraically and in a table.

1) Fortunately, the algebraic equation is written in slope-intercept form; this means that intercept is easy to find. The slope-intercept form is y=mx+b, where b is the y-intercept. In function 1, the b value is 10.

2) Another way to describe the y-intercept is the y-value when x=0. So, the y-intercept on a table is wherever the x-value is 0. In this case, the first row represents when x=0. The table says that when x=0, y=10. This means that the y-intercept for function 2 is 10.

Since the y-intercept for both of the functions is 10, it can be said that the 2 functions have equivalent y-intercepts.

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2 years ago
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Bad White [126]

Answer:

y = -2x + 9

Step-by-step explanation:

The equation of the new line is the same as that of this given line, EXCEPT that the constant will be different.

Start with y = mx + b; substitute 1 for y, 4 for x and -2 for m:

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Then b = 9, and y = -2x + 9

8 0
3 years ago
Which one I'll give stars or points
kirza4 [7]

Answer:

the answer is B

Step-by-step explanation:

5 0
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