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Natalka [10]
3 years ago
7

Which of the following is(are) the solution(s) to |5x+2|=8 ?

Mathematics
2 answers:
konstantin123 [22]3 years ago
8 0

Answer:

-2, 1⅕ = x

Step-by-step explanation:

5x + 2 =  -8 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 5x + 2 = 8

- 2 - 2 - 2 - 2

________________ ____________

5x = -10 5x = 6

___ ___ ___ ___

5 5 5 5

x = -2 x = 1⅕

I am joyous to assist you anytime.

slega [8]3 years ago
7 0

Answer:

x = 6/5 or x = -2

Step-by-step explanation:

We need to solve:

|5x+2|=8

We know that |u|=a the u = a and u = -a

Now solving:

|5x+2|=8

5x +2 = 8 or 5x +2 = -8

5x = 8-2 or 5x = -8-2

5x = 6 or 5x = -10

x = 6/5 or x = -10/5

x = 6/5 or x = -2

So, x = 6/5 or x = -2

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Bill bought a new cellular phone. His monthly bill will be $32.99 each month which includes 100 minutes of use. Additional minut
Sunny_sXe [5.5K]

Answer: option D is the correct answer.

Step-by-step explanation:

Let m represent the total number of minutes that the phone is used in a month.

Let C represent the amount of the bill for using m minutes.

His monthly bill will be $32.99 each month which includes 100 minutes of use. Additional minutes will cost $0.19 per minute. It means that the cost of additional minutes is

0.19(m - 100). Therefore, the linear model representing the amount of the bill would be

C = 0.19(m - 100) + 32.99

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3 years ago
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The dress store is having a sale where all merchandise is 1/4 off. A women buys $36 of merchandise at the sale price.
Alina [70]

the answer is simple you simply multiply 36 times 4 which will give you 144. So 144 is your answer


7 0
4 years ago
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A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superhero's height in feet as a func
Gemiola [76]

Answer:

Since \bigtriangleup \geq 0, the superhero makes it over the building.

Step-by-step explanation:

The height is given by the following function:

f(x) = -16x^{2} + 200x

Will the superhero make it over the building?

We have to find if there is values of x for which f(x) = 612.

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

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In this question:

f(x) = -16x^{2} + 200x

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16x^{2} - 200x + 612 = 0

We have to find \bigtriangleup

We have that a = 16, b = -200, c = 612. So

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7 0
3 years ago
What was Miguel's mistake if any?
iogann1982 [59]

Answer:

Step-by-step explanation:

According to my answer, he shound have computed 2^3 which is 8 and suibstract that from four getting four, then multiplying it by tow to get eight so it should be 4 so Miguel made no mistakes.Since he was doing the order of operations for each step of the equation.

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Reptile [31]
F(-x)=-x+(12/-x)=-x-12/x
odd function
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