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AlekseyPX
3 years ago
8

Riley says that he has completed 65% of the work on his science project. Wanda says she has completed 3/5 of the work on her pro

ject. Which student has completed more of the work on the project?
Mathematics
2 answers:
GarryVolchara [31]3 years ago
5 0

Answer:

Step-by-step explanation:

dsp733 years ago
5 0
Riley completed more of the project because 3/5 times 20 is only 60% which is what Wanda has but Riley has 65% which is more
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we have the inequality

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step 1

Find out the first solution (positive case)

\begin{gathered} +(5x+4)\leq10 \\ 5x\leq10-4 \\ 5x\leq6 \\ x\leq\frac{6}{5} \\ x\leq1.20 \end{gathered}

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Interval (-infinite,1.20]

step 2

Find out the second solution (negative case)

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Multiply by -1 both sides

\begin{gathered} (5x+4)\ge-10 \\ 5x\ge-10-4 \\ 5x\ge-14 \\ x\ge-\frac{14}{5} \\ x\ge-2.8 \end{gathered}

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step 3

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The solution is

[-2.8, infinite) ∩ (-infinite,1.20]=[-2.8,1.20]

the solution is the interval [-2.8,1.20]

see the attached figure to better understand the problem

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Answer:

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