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Maslowich
3 years ago
12

Please help me (please dont send links)

Mathematics
1 answer:
Burka [1]3 years ago
3 0

Answer:

Part A

79.4

Part B

84

Part C

The science class

Step-by-step explanation:

The linear function representing the average test score in the math class, after taking <em>x</em> number of tests, f(x) = 0.2·x + 79

The science class average test score, after taking <em>x</em> number of tests, is given by the linear function g(x)

The values of g(x) are presented as follows;

x; 1, 2, 3

g(x); 86, 84, 82

Part A

By using the given function for the test average for the math class, f(x), when x = 2, we have;

f(2) = 0.2 × 2 + 79 = 79.4

The test average for the math class after completing test 2 = 79.4

Part B

The test average for the science class after completing test 2 from the table is 84

Part C

After completing test 4, the test average for the math class, f(4), is given as follows;

f(4) = 0.2 × 4 + 79 = 79.8

The test average for the science class after the completing test 4 is found by noting that the test average, g(x) decreases by 2 for each increase in the number of test taken, <em>x</em>, by 1

Given that the test average of the science, g(3) class after taking test 3 is 82, the test average after taking test 4, g(4) = g(3) - 2 = 82 - 2 = 80

g(4) = 80

Therefore, after completing test (4), the science class has a higher test average g(4) = 80, than the math class f(x) = 79.8

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Step-by-step explanation:

Given

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3 years ago
A rectangle has a height of 5x and a width of x + 2. Express the area of the entire rectangle.
o-na [289]
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8 0
3 years ago
Can someone help me out here? +brainliest
natali 33 [55]

Answer:

  A) 40

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Step-by-step explanation:

A) Your calculator can tell you the ratio ...

  (national pennies)/(local pennies) = (8×10⁶)/(2×10⁵)

  = (8/2)×10⁶⁻⁵ = 4×10¹ = 40

The national drive collected 40 times as many pennies as the Valley Stream Central goal.

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B) Multiplying the number of pennies by the diameter of each will tell the length of the line of pennies. That length can be compared to the 5 km distance to determine if the reporter's statement is true. (It is <em>not</em> true.)

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3 0
3 years ago
HELP PLEASE ASAP:
VashaNatasha [74]

The average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.

<h3>What is the Average Rate of Change of a Function?</h3>

Average rate of change = \frac{f(b) - f(a)}{b - a}.

Given the function, f(x)= 3^x + 25,

The average rate of change using the intervals of, x = 2 to x = 6 would be solved as shown below:

a = 2

b = 6

f(a) = f(2)= 3^2 + 25 = 34

f(b) = f(6)= 3^6 + 25 = 754

Average rate of change = \frac{754 - 34}{6 - 2} = \frac{720}{4}

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Therefore, the average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.

Learn more about average rate of change on:

brainly.com/question/8728504

5 0
2 years ago
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