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Citrus2011 [14]
3 years ago
7

How are grouping symbols helpful In simplifying expression correctly

Mathematics
2 answers:
anyanavicka [17]3 years ago
6 0
Grouping symbols such as parentheses, brackets, and braces help you to simplify the equation in the correct order.<span>
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zimovet [89]3 years ago
5 0
When you combine like terms, you are able to solve the equation in less steps
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Please solve this question faaaast​
Kazeer [188]

Answer:

300-400

Step-by-step explanation:

The first step is finding the total of the data we have. So, we take 5 + 10 + 15 + 20 + 25 + 15 + 10 which equals 80.

The median is the middle point of all the data. If it's an odd number, you can calculate the median with the equation (n+1) / 2, plugging in the total amount of data for n.

When it's an even number though, there is no one middle point since the data splits evenly in 2, so we have to use 2 equations: n/2 & (n/2) + 1. Then, we find the average of those two data points. (Although, you don't have to do that for this particular question).

When we plug 80 in for n in both of these equations, we get 40 and 41.

To where this is in the question, we have to count up from the bottom of the chart. 1-5 is below 100, 6-15 is 100-200, 16-30 is 200-300, and 31-50 is 300-400.

Since 40 and 41 are between 31 and 50, the answer is 300-400.

Hope this helps! :)

6 0
2 years ago
What number must you add to complete the square? x^2+14x=-7
viktelen [127]
To complete the square of a polynomial, use the term "(b / 2) ^ 2".

In this polynomial, the "b" term is 14.
Plug that in.

(14 / 2) ^ 2
7 ^ 2

49.

The answer is C.
6 0
4 years ago
Read 2 more answers
What is 708 divided by 67
Anton [14]
10.5671641791 is the answer.
4 0
4 years ago
Read 2 more answers
How to simplify the square root of 3 over the square root of 21
Alika [10]

3 * 7 = 21, so

\sqrt{21}=\sqrt{3\cdot7}=\sqrt3\sqrt7

Then

\dfrac{\sqrt3}{\sqrt{21}}=\dfrac1{\sqrt7}

and you can rationalize the denominator to write this as

\dfrac1{\sqrt7}\cdot\dfrac{\sqrt7}{\sqrt7}=\dfrac{\sqrt7}7

7 0
4 years ago
Read 2 more answers
At a local tech school, there are 6 math classes and each class has 27 students. The school pays for the book and calculators fo
umka21 [38]

The first step to solve this problem, you have to compute first for the total number of students:

6 math classes x 27 students per class = 162 students

Now, you know that there are 162 students all in all in the school. The next step is to compute for the total cost of both the book and the calculator per student.

$45.10 (Book) + $57.80 (Calculator) = $102.90 (total cost per student)

To compute for the total cost that the school will pay, you have to multiply the total cost per student to the number of students in school.

$102.90 per student x 162 students = $16,669.80

Therefore, the total cost the school will pay is $16,669.80.

6 0
3 years ago
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