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3 years ago

6

The equation 4x-45=y is used to find your profit y in dollars from buying $45 of supplies and washing cars for $4 what does the

x stand for

1 answer:

Mrrafil [7]3 years ago

5 0

33333333333333336666666666

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On a particular day, the wind added 4 miles per hour to Jaime's rate when she was rowing with the wind and subtracted 4 miles pe

allochka39001 [22]

recall your d = rt, distance = rate * time.

j = Jaime's rate

so with the wind her rate is j + 4, and without the wind her rate is j - 4, we also know that she can do with the wind 34 miles and against it 18 miles all within the same amount of time of t hours.

$\bf \begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ &------&------&------\\ \textit{with the wind}&34&j+4&t\\ \textit{against the wind}&18&j-4&t \end{array} \\\\\\ \begin{cases} 34=(j+4)t\implies \frac{34}{j+4}=\boxed{t}\\\\ 18=(j-4)t\\ -------------\\ 18=(j-4)\left( \boxed{\frac{34}{j+4}} \right) \end{cases} \\\\\\ 18(j+4)=(j-4)34\implies 18j+72=34j-136 \\\\\\ 208=16j\implies \cfrac{208}{16}=j\implies 13=j$

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3 years ago

Solve the compound inequality graph the solution

polet [3.4K]

The correct answer is the second option :)

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3 years ago

What is the result when the number 25 is increased by 20

STALIN [3.7K]

Answer:

Step-by-step explanation:

$25 + 20$

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3 years ago

Whole numbers greater than 15 but less than 16

taurus [48]

Answer:

There are no whole numbers greater than 15 but less than 16... I am pretty sure it cant be 15 1/2 or something like that...

Step-by-step explanation:

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3 years ago

seropon [69]

<span>2x − 3y − z
</span><span> x = −2,
</span><span> y = 3,
</span><span> z = −2
What we must do is replace the values given in the equation. We have then replacing:
</span> 2*(-2) - 3*(3) - (-2) = -11
The answer is -11

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3 years ago