2 years ago

What is the solution to this equation? −5n+5=−15

Mathematics

1 answer:

RoseWind [281]2 years ago

7 0

Use multi step equation method
add five by both sides
then divide negative 5 and you get 2
the answer is two

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314 stones for a cost of 2,512.00, how many stones are needed is the cost is 1,584.00

kondor19780726 [428]

Answer:

x≈231.123

Step-by-step explanation:

1) Make a ratio 314/2512= x/1584

2) Use the concept of cross multiplication and get 314*1584=2512x

3) Use Algebra:

314*1584=497,376

497,376/2152=2512x/2152

x≈231.123

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Using SET NOTATION, what is the solution set for the following equation? a² - 3 = 22

UNO [17]

The solution set is $\{-5,5\}$

Explanation:

The given equation is $a^{2}-3=22$

To determine the solution set of the equation, let us solve the equation.

Adding both sides of the equation by 3, we have,

$a^2=25$

Taking square root on both sides of the equation, we get,

$a=\sqrt{25}, a=-\sqrt{25}$

$a=5, a=-5$

Thus, the solution of the equation is $a=5, a=-5$

The solution set of the equation is the set which contains all the solutions of the equations.

Thus, writing the solutions of the equation using set notation, we have,

$\{-5,5\}$

Thus, the solution set is $\{-5,5\}$

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3 years ago