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noname [10]
4 years ago
7

Help please ASAP!!! Quick

Mathematics
1 answer:
hoa [83]4 years ago
8 0

Answer:

6. 15x-125\ge 205,\ \ \ 22\ hours

7. 0\le x

Step-by-step explanation:

6. Let x be the number of hours Manuela works in a week. She makes $15 per hour, so $15x is the amount of money she earns in a week.

$125 should be deducted, so she is left with

\$(15x-125)

This amount must be at least $205, so

15x-125\ge 205

Solve this inequality:

15x-125+125\ge 205+125\\ \\15x\ge 330\\ \\x\ge 22

Hence, the fewest number of hours she works in a week is 22 hours.

7. Solve the inequality

|2x-1|

Rewrite it as a double equivalent inequality:

-3

Add 1:

-3+1

Divide it by 2:

-1

Non-negative integer solutions are 0\le x

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ryzh [129]

Answer:

one

Step-by-step explanation:

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Answer:

The solution is:

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Please check the attached line graph below.

Step-by-step explanation:

Given the expression

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-7r-4+4\ge \:4r+2+4

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Therefore, the solution is:

-7r-4\ge \:\:4r+2\quad \::\quad \:\begin{bmatrix}\mathrm{Solution:}\:&\:r\le \:\:-\frac{6}{11}\:\\ \:\:\mathrm{Decimal:}&\:r\le \:\:-0.54545\dots \:\\ \:\:\mathrm{Interval\:Notation:}&\:(-\infty \:\:,\:-\frac{6}{11}]\end{bmatrix}

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