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Elena-2011 [213]
2 years ago
8

Why do some numerical expressions contain parentheses

Mathematics
1 answer:
Elden [556K]2 years ago
6 0

The most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

<h3>What are parentheses?</h3>

In mathematics, parenthesis is used to arrange numbers in the sequence of operations, clarify numbers, and denote multiplication.

Suppose you have an expression as:-

E = { ( 5-2 )8} 6

In this case, you would calculate 5 minus 2 first (parentheses), then multiply by 8 (brackets), then complete the part inside the curly braces, and finally multiply by 6.

Therefore the most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

To know more about parentheses follow

brainly.com/question/1778745

#SPJ1

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Answer:

Parent's share would be : 28%

Step-by-step explanation:

Cost of the computer = $2000

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Brother's share = $240

Parents paid rest. That will be : 2000 - 1200 - 240 = $560

Percentage of parents share :

                                             \frac{560}{2000} \times 100 = 28 \%

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2 years ago
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3 years ago
Compare the line passing through the points (–2, –9) and (4, 6) to the line given by the equation y = 25x – 4.
elena-s [515]

Answer:

D. They have the same y-intercep

Step-by-step explanation:

Before the comparison will be efficient, let's determine the equation of the two points and the x intercept .

(–2, –9) and (4, 6)

Gradient= (6--9)/(4--2)

Gradient= (6+9)/(4+2)

Gradient= 15/6

Gradient= 5/2

Choosing (–2, –9)

The equation of the line

(Y+9)= 5/2(x+2)

2(y+9)= 5(x+2)

2y +18 = 5x +10

2y =5x -8

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Choosing (4, 6)

The equation of line

(Y-6)= 5/2(x-4)

2(y-6) = 5(x-4)

2y -12 = 5x -20

2y = 5x-8

Y= 5/2x -4

From the above solution it's clear that the only thing the both equation have in common to the given equation is -4 which is the y intercept

4 0
3 years ago
The price of a sweater reduced from $20 to $12. By what percentage was the price of the sweater reduce ?
Lemur [1.5K]

Answer:the price of the sweater was reduced by 40%

Step-by-step explanation:

hope this helps

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Need to know answer please
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Answer:

IDK

Step-by-step explanation:

Sorry

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3 years ago
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