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hram777 [196]
4 years ago
7

*URGENT PLEASE HELP*The total number of vertical feet that a climber has traveled varies directly with the number of hours she h

as been climbing. The constant proportionality is 600.

Mathematics
1 answer:
Scrat [10]4 years ago
4 0

The answer is:

a) 300

b) 600

c) 1.66*10^{-3}

d) 3.33*10^{-3}

e) 2400

The explanation is shown below:

1. You have that the total number of vertical feet that a climber has traveled (which you can call y), varies directly with the number of hours she has been climbing (which you can call x), and the constant of proportionality is 600 (k=600).

2. Keeping this on mind you can express it as following:

y=kx\\y=600x

3. Now, substitute the values given in the table and solve for y to calculate the number of feet or solve for x to calculate the time in hours:

a) y=(600)(\frac{1}{2})=300

b) y=(600)(1)=600

c) x=\frac{1}{600}=1.66*10^{-3}

d) x=\frac{2}{600}=3.33*10^{-3}

e) y = (600)(4)=2400

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A dime is worth 10 cents and a quarter is worth 25 cents.

Let D be the number of dimes and Q be the number of quarters.

Since the total amount of coins in the pocket is 32, then:

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Solve the system using the substitution method. To do so, isolate D from the first equation and replace the expression for D into the second equation to obtain a single equation in terms of Q:

\begin{gathered} D+Q=32 \\ \Rightarrow D=32-Q \\  \\ 10D+25Q=545 \\ \Rightarrow10(32-Q)+25Q=545 \\ \Rightarrow320-10Q+25Q=545 \\ \Rightarrow25Q-10Q=545-320 \\ \Rightarrow15Q=225 \\ \Rightarrow Q=\frac{225}{15} \\  \\ \therefore Q=15 \end{gathered}

Replace back Q=15 into the expression for D to find the amount of dimes:

\begin{gathered} D=32-Q \\ =32-15 \\ =17 \end{gathered}

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1 year ago
50 POINTS FOR THIS IFBYOU GIVE ME A DECENT ANSWER
defon

9514 1404 393

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  see attached

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  x/(x-intercept) +y/(y-intercept) = 1

This means the x- and y-intercepts are (4, 0) and (0, -3), respectively. Plot these points and draw the line through them.

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