3 years ago

A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

8 0

Say the width is W and the length is L

L=3W (and of course W=W)

Now you use the perimeter formula P=2L+2W

80=2(3W) + 2W)

80=6W+2W

80=8W Divide both sides by 8

W=10

Now that you know the width, substitute it back into L=3W to find the length

L=3(10)

L=30

The dimensions are length: 30 cm and width: 10 cm

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andrezito [222]

Answer:

$24(f(n))$

Step-by-step explanation:

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4 0

2 years ago

What is the 8th term of this geometric sequence 6,48,384,3072

ELEN [110]

Common ratio can be found by dividing the 2nd term by the first
r = 48/6
r = 8

an = a1 * r^(n-1)
n = term to find = 8
a1 = first number = 6
r = common ratio = 8
now we sub
a(8) = 6 * 8^(8-1)
a(8) = 6 * 8^7
a(8) = 6 * 2097152
a(8) = 12582912 <==

3 0

3 years ago

Which ordered pair would form a proportional relationship with the point graphed below?

Serhud [2]

40,20

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6 0

3 years ago

Which is not a good method of research when buying a car?

Snowcat [4.5K]

Answer:

Buy the first car you see.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all possible sums from the 36 possible c

Georgia [21]

Answer:

18 times

Step-by-step explanation:

Sample space ; roll of 2 number cubes = 6^2 = 36

Sum of 4 in 2 cube rolls = 3

Probability = required outcome / Total possible outcomes

P(sum of 4) = 3 / 36 = 1 / 12

If number cube is rolled 216 times :

Probability on 1 roll * Number of rolls

(1 / 12) * 216

0.0833333 * 216

= 18

3 0

3 years ago