3 years ago

A rectangular room is 3 times as long as it is wide, and its perimeter is 48 meters. Find the dimension of the room.

Mathematics

1 answer:

marin [14]3 years ago

6 0

Length is 18 and width is 6

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Santiago is eight years younger than Juan is today. If, in four years, Santiago will be half Juan’s age, how old is Santiago tod

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d) 4.

Step-by-step explanation:

Let Santiago be x years old today.

Then Juan is x + 8 years old.

In 4 years Santiago will be x + 4 years.

In 4 years Juan will be x + 12 years.

From the given information:

x + 4 = 0.5(x + 12)

x = 0.5x + 6 - 4

0.5x = 2

x = 2 / 0.5

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4 years ago

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Which operations? like adding/subtracting & multiplying/dividing?

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Any negative and positive number can be your coordinates.

Step-by-step explanation:

As long as you don't have any restrictions as to what the coordinates can be, you're good to go!

Hope this helps!

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Flavia plotted the distance-time graph of a car traveling 40 miles per hour. Jenya plotted the distance-time graph of a car trav

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A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is

Dennis_Churaev [7]

Answer:

The test contains 10 three-point questions and 14 five-point questions

Step-by-step explanation:

Given equations are:

$x+y = 24\\and\\3x+5y=100$

From 2nd equation we can deduce that x represents number of 3-point questions and y represents number of 5-point questions.

Using the substitution method:

From x+y = 24

y= 24-x

Putting this valu of y in 3x+5y=100

$3x+5(24-x) = 100\\3x + 120 - 5x = 100\\-2x+120=100\\-2x = 100-120\\-2x = -20\\\frac{-2x}{-2} = \frac{-20}{-2}\\ x = 10\\Putting\ the\ value\ of\ x\ in\ x+y=24\\10+y=24\\y = 24-10\\y = 14$

Hence, the correct answer is:

The test contains 10 three-point questions and 14 five-point questions..

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4 years ago