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exis [7]
4 years ago
5

A large rectangle is made up of 3 smaller identical rectangles, the perimeter of one small rectangle is 21cm. What is the perime

ter of the large rectangle.
Mathematics
1 answer:
Alina [70]4 years ago
3 0

Answer:

63 units

Step-by-step explanation:

If the perimeter of 1/3 of the rectangle is 21, multiply 21 by 3 to find the perimeter of the entire rectangle.

21 x 3 = 63

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Q varies inversely as the square of p, and Q = 36 when p = 7. Find Q when p = 6.
snow_lady [41]

Answer:

49

Step-by-step explanation:

1. Calculate the constant of proportionality

Q = k/p²

k = Qp²     Multiplied each side by p²

  = 36 × 7²

  = 36 × 49

  = 1764

2. Calculate the new value of Q

Q = 1764/p²

  = 1764/36

Q = 49

4 0
3 years ago
A blue whale, the largest mammal in the world, weighs 1.36 * 105 kilograms as an adult. An adult killer whale weighs about 4 * 1
sergejj [24]

Answer:

(1.36 × 10^{5}) - (4 × 10^{3}) = 132000kg

1.32 × 10^{5} kg = 1320000

7 0
3 years ago
The expression 100 + 20m100+20m100, plus, 20, m gives the volume of water in Marcel’s pool (in liters) after Marcel spends mmm m
Nady [450]
All you have to do is you only need to evaluate the given equation which is:100 + 20m where m would be the number of minutes = 5 1/4 minutes
100 + 20 (5 1/4) 
= 100 + 105 
= 205 cubic liters is the volume of water in Marcel’s pool after he fills it.
8 0
3 years ago
I need help on this one please
ozzi

Answer:

i think the answer is c

Step-by-step explanation:im just guessing but if it is wrong then im sorry

7 0
3 years ago
The width of a rectangular swimming pool is 12 meters less than the length, and the perimeter is 72 meters. Find its dimensions
Elis [28]

Answer:

The dimensions are 24 and 12 meters.

Step-by-step explanation:

W + L + W + L = 72   perimeter

(L-12) + L + (L-12) + L = 72

4L - 24 = 72

4L = 72 + 24 = 96  ====>  L = 96%2F4 = 24.

8 0
4 years ago
Read 2 more answers
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