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Aleks [24]
2 years ago
12

This graph represents 2x+y=−4.

Mathematics
1 answer:
Tema [17]2 years ago
5 0

Answer:

(-2, -2)

Step-by-step explanation:

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A number of friends decided to go on a picnic and planned to spend rs. 96 on eatables. four of them, however, did not turn up. a
mr Goodwill [35]

The number of those who attended the picnic was 8.

Quadratic equations are the polynomial equations of degree 2 in one variable of type f(x) = ax^{2} + bx + c = 0 where a, b, c, ∈ R and a ≠ 0.

Such questions are best examples of quadratic equations where  the unknown is simply assumed to be a variable which when substituted according to the conditions yield a quadratic equation which can easily be solved.

Let x represent the whole population.

Total Spending = Rs. 96

Thus, each individual's contribution is equal to 96/x.

Four people did not show up causing

others to contribute Rs. 4 extra.

So the given condition can be written as

96/(x-4) – 96/x = 4

=>96x – 96(x-4) = 4x(x-4)

=> 96x -96x + 384 = 4x2 – 16x

=> 4x2 – 16x – 384 = 0

=> x2 – 4x – 96 = 0

=> (x – 12)(x + 8) = 0

=> x = 12 or x = -8 (neglect)

So x = 12

x-4 = 8  ( because  four of them did not turn up)

∴ The number of those who attended the picnic was 8.

Learn more about quadratic equations here :

brainly.com/question/15241362

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4 0
2 years ago
In the diagram below of parallelogram ROCK, m angle is 70 degrees and m angle ROS is 65 what is the value of x
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Step-by-step explanation:

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3 years ago
Silvio earns 10% for each car sale he makes while working at a used car dealership. If he sells a used car for $2,000, what is h
Fynjy0 [20]

Commission = 10%

If the car was sold for $2000

commission = 10% of $2000

commission = 0.1 x $2000

commission = $200

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PLEASE HELP ME!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!
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b

Step-by-step explanation:

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Step-by-step explanation:

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