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Alexeev081 [22]
3 years ago
14

Pls help! Pls do this step by step . factorise: m^3-27​

Mathematics
1 answer:
Verdich [7]3 years ago
7 0

Answer:

m-3

Step-by-step explanation:

cube root the two to get m-3

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How many four element subsets of \{1, 2, 3, 4, 5, 6, 7\}{1,2,3,4,5,6,7} have 11 as an element but do not have 77 as an element
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\dbinom53 = \dfrac{5!}{3!(5-3)!} = \boxed{10}

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4 0
2 years ago
What is the absolute value of 5
statuscvo [17]

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Step-by-step explanation:

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7 0
3 years ago
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What’s the correct answer for this?
harkovskaia [24]

Answer:

(x + 5)² + (y - 7)² = 13

Step-by-step explanation:

The equation of a circle in standard form is

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Here (h, k) = (- 5, 7) and r = \sqrt{13} , thus

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4 0
3 years ago
Albert lives in the southern US. At noon on a summer day, the angle of elevation of the sun is 83.5 degrees. The window in Alber
bekas [8.4K]
Calculate the volume, that is easy: 

<span>4 x 5 x 2.5 = 50m3 </span>

<span>now, as you did not provided if you use nitrogen in </span>

<span>ntp (normal temperature and pressure - 20c, 1atm) weight is 1.165kg/m3 </span>

<span>or: </span>

<span>stp (standard temperature and pressure - 0c, 1atm) weight is 1.2506 </span>

<span>these are in case of pure nitrogen, as in presented case nitrogen is only 79% we need to change weights to represent that: </span>

<span>ntp - 1.165kg/m3 / 100% x 79% = 0.92035kg/m3 </span>

<span>stp - 1.2506kg/m3 / 100% x 79% = 0.987974kg/m3 </span>

<span>therefore in case of: </span>

<span>ntp, total weight of n2 will be 50m3 x 0.92035kg/m3 = 46.0175kg </span>

<span>stp, total weight of n2 will be 50m3 x 0.987974kg/m3 = 49.3987kg</span>
3 0
3 years ago
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