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2 years ago

9

The speed of a bus from University A to University B was decreased by 20% to 48 miles per hour. What was the speed of the bus be

fore the decrease?

1 answer:

Lunna [17]2 years ago

5 0

Answer:

initial speed: 240 m/h

Step-by-step explanation:

48 m/h is the current speed which is the 20% of X

x (20 / 100) = 48

20x = 4800

x = 4800/20

x = 240 m/h

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Answer:

1) The value of $x$ is 12.

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Step-by-step explanation:

1) If the glass is a rectangle, then both diagonal must have the same length, that is, the following equation must be solved:

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We need some algebraic handling to determine the value of $x$ :

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$5\cdot x - 2\cdot x = 25 +11$

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The value of $x$ is 12.

2) If we know that $x = 12$ , then the length of the diagonal ( $d$ ) is:

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$d = 49$

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