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denis-greek [22]
3 years ago
14

A rectangle is 3 times as long as it is wide. the perimeter is 60 cm. find the dimensions of the rectangle.round to the nearest

tenth if necessary.
a. 7.5 cm by 22.5 cm
b. 7.5 cm by 52.5 cm
c. 20 cm by 60 cm
d. 15 cm by 22.5 cm
Mathematics
1 answer:
My name is Ann [436]3 years ago
3 0
60 divided by 8 =7.5 (The four sides of a square and then merely add two additional lengths to two sides) Now 7.5 times 3= 22.5 which gives two sides at
22.5cm and two sides at 7.5cm total is 60cm
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Talja [164]

Answer:

Robyn and Vladimir both are correct.

Step-by-step explanation:

Vladimir says that the equation of the line the passes through points (-5, -3) and (10,9) is y = \frac{4}{5} x + 1

Let's find the equation of line

Slope of the line passing through ( -5, -3 ) and (10, 9 )

m=\frac{y-y'}{x-x'}=\frac{9+3}{10+5}=\frac{12}{15}=\frac{4}{5}

So equation will be y = \frac{4}{5}x + c

Since the line passes through (-5, -3)

so (-3) = \frac{4}{5}x (-5) + c

(-3) = -4 + c

c = -3 +4 = 1

So equation should be y = \frac{4}{5}x +1

Therefore, Vladimir is correct.

Robyn says this line is passing through  (-10,-7) and (-15, -11)

Slope m=\frac{y-y'}{x-x'}=\frac{-11+7}{15+10}=\frac{-4}{-5}=\frac{4}{5}

equation is y = \frac{4}{5}x + c

Since this line passes through (-10 -7)

so (-7) = \frac{4}{5}x (-10) + c

-7 = -8 + c ⇒ c = 8 - 7 = 1

Equation of the line will be y = \frac{4}{5}x + 1

So Robyn and Vladimir both are correct.

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3 years ago
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klemol [59]
The correct answer to your question is  k=5 .
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The state lottery board is examining the machine that randomly picks the lottery numbers. On each trial, the machine outputs a b
eduard

Answer:

0.425

0.5

Step-by-step explanation:

Given :

Outcome 0 1 2 3 4 5 6 7 8 9

Number of Trials 4 2 5 3 2 6 6 3 6 3

The experimental probability of obtaining an odd number :

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Total number of trials = Σ(4 2 5 3 2 6 6 3 6 3) = 40

Total number of odd outcomes = (2+3+6+3+3) = 17

Experimental probability = number of prefferwd outcomes / total number of trials

Experimental P(odd). = 17 / 40 = 0.425

The theoretical probability of getting an odd number :

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Number of odd values / total number of values

5 / 10 = 1/2

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252sq. m

Step-by-step explanation:

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Answer:

the answer is 1

Step-by-step explanation:

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