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Oliga [24]
3 years ago
13

Ms. galendez's backyard is a rectangle whose length is twice the width. if the perimeter is 720 ft, what are the dimensions of h

er yard
Mathematics
1 answer:
Talja [164]3 years ago
3 0

Answer:

120ft and 240ft

Step-by-step explanation:

720 = 2L + 2W

Since L = 2W, we get

720 = 2(2W) + 2W

6W = 720

W = 120

L = 2W = 2(120) = 240

The dimensions of the yard are 120 feet and 240 feet

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Answer:

i) 1350 m

ii) 5400 m

Step-by-step explanation:

<u>Formula for Speed</u>

\boxed{\sf Speed=\dfrac{Distance}{Time}}

Rearrange the formula so that Distance is the subject:

\implies \sf Distance = Speed \times Time

<h3><u>Question (i)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 30 seconds

Substitute the given values into the formula for distance:

\implies \sf Distance = 45 \times 30 = 1350\:m

<h3><u>Question (ii)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 2 minutes

As the time is given in a different unit of time as the speed, we must first convert the time into seconds:

1 minute = 60 seconds

⇒ 2 minutes = 60 × 2 = 120 seconds

Therefore:

  • Speed = 45 m/s (meters per second)
  • Time = 120 seconds

Substitute the values into the formula for distance:

\implies \sf Distance = 45 \times 120 = 5400\:m

3 0
10 months ago
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What is the sum of three consecutive odd integers is 75?
tankabanditka [31]
Odd integers are 2 apart
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the integers are 23,25,27
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kompoz [17]
7(x+1)=63
7 times a number(x) +1 
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Answer:

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Step-by-step explanation:

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Answer: 3x^2-x+3

Step-by-step explanation:

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Distribute the negative sign. This basically changes all the signs inside the parentheses.

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Combine like terms;

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