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Lady bird [3.3K]
3 years ago
8

Choose as many answers as apply.

Mathematics
1 answer:
alexandr1967 [171]3 years ago
3 0

Answer:

  • multiplying a multi-digit number by itself several times (finding the power of a number)
  • finding a square root
  • statistical calculations

Step-by-step explanation:

We don't know what your introduction tells you, but the above-listed operations are ones I choose to use a calculator for. I also use a calculator for ordinary arithmetic, such as division by numbers with 2 digits or more. (It is simply faster and requires no scratch paper.)

If statistical calculations are not done with a calculator, they at least require the availability of suitable tables.

___

All of these operations can be done by hand without a calculator, and were in times passed. Lifetimes of effort were involved in generating some of the original math tables for statistics, trig, logarithms, and other functions readily evaluated using a modern calculator.

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A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and
Vlad1618 [11]

Using the weighed mean formula, it is found that Mara's average for the course was of 68.6.

<h3>What is the weighed mean?</h3>

The weighed mean is given by the <u>sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights</u>.

In this problem, the weights are as follows:

  • A quiz has a weight of 1.
  • A test has a weight of 2.
  • The final examination has a weight of 4.

Hence, her weighed mean is given as follows:

M = \frac{2(65 + 62 + 60) + (61 + 96 + 80 + 89) + 4(65)}{6 + 4 + 4} = 68.6

Mara's average for the course was of 68.6.

More can be learned about the weighed mean formula at brainly.com/question/24398353

5 0
2 years ago
Help please !!!! This is really hard
ankoles [38]

Answer:

Option -c  :5^ -12  .  2^ 40

Step-by-step explanation:

(  5^6 . 2^8    )( 5^-2  . 2^5 )

(  5^6 . 5^-2  )   ( 2^8  . 2^5 )

5^ -12  .  2^ 40

Option -c :  5^ -12  .  2^ 40

I hope im right!!  

4 0
2 years ago
Please help!!! The last one. Word answer
liberstina [14]

Often, variability is most usefully expressed in the same units as the original data. That's what <em>standard deviation</em> (square root of variance) does. In situations where that is the case, the variance is useful only for getting to the value of standard deviation.

4 0
3 years ago
HELP ASAP!!!! EXPLAIN
Amanda [17]

Answer:

i think the answer is 50

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Someone please help!
disa [49]

Answer:

10=1x+25

slope=1

y-int-25

Thats all i know so far i will keep working on it

Step-by-step explanation:

7 0
2 years ago
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