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mr Goodwill [35]

2 years ago

7

Oceanside Bike Rental Shop charges a 16 dollar fixed fee plus 7 dollars an hour for renting a bike. Nancy paid 51 dollars to ren

t a bike. How many hours did she pay to have the bike checked out ?

1 answer:

maks197457 [2]2 years ago

7 0

The correct answer is 5 hours

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Find the area of a circle with a diameter of 14 meters. Round your answer to the nearest hundredth of a square meter.

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<u>To find the area of the circle</u>:

⇒ need to know the formula: $\pi r^{2}$

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3 years ago

Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.Josiah has punch c

love history [14]

Let x be the number of weeks; therefore, the two linear equations are

$\begin{gathered} T=2+7x \\ \text{and} \\ C=11+4x \end{gathered}$

Where T stands for the punches on the tea punch card and C for the punches on the coffee punch card.

Solving by substitution. Set T=C, then

$\begin{gathered} T=C \\ \Rightarrow2+7x=11+4x \\ \Rightarrow3x=9 \\ \Rightarrow x=\frac{9}{3}=3 \\ \Rightarrow x=3 \end{gathered}$

Thus, substitute the value of x=3 into the first equation,

$\begin{gathered} x=3 \\ \Rightarrow T=2+7\cdot3=23 \\ \Rightarrow T=23 \end{gathered}$

Thus, after 3 weeks, Josiah will have the same number of punches on each card, and he will have 23 punches on each card.

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1 year ago