2 years ago

Find the average (mean) of the following test scores.

Mathematics

1 answer:

hichkok12 [17]2 years ago

4 0

Answer:

The average (mean) of the test scores is

A. 76

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PLEASE HELP!! How many solutions can be found for the equation −4x − 11 = 2(x − 3x) + 13?

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Answer: $No~Solution$ $s$

Step-by-step explanation:

Let's factor then solve to find the complex solutions.

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3 years ago

Use the arithmetic progression formula to find the sum of integers from 75 to 100.75,76,77....99,100.

Sophie [7]

Answer:

The sum is 2275

Step-by-step explanation:

Given

$75,76,77....99,100$

Required

The sum

Using arithmetic progression, we have:

$S_n = \frac{n}{2}(T_1 + T_n)$

Where:

$T_1 = 75$ --- first term

$T_n = 100$ --- last term

$n = T_n - T_1 + 1$

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So, we have:

$S_n = \frac{n}{2}(T_1 + T_n)$

$S_n = \frac{26}{2}*(75 + 100)$

$S_n = 13*175$

$S_n = 2275$

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2 years ago