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IRINA_888 [86]
4 years ago
7

Simplify (3n – 2m)2 = ? 

Mathematics
2 answers:
Tcecarenko [31]4 years ago
8 0
(3n-2m) (3n-2m)

(you multiply the first number (3n) by the first number in the 2nd bracket (3n) and then by the second number in the 2nd bracket (-2m)), and you do the same for -2m

9n2 - 6mn -6nm +4m2

9n2 -12mn + 4m2

Alex Ar [27]4 years ago
7 0

Hi!

(3n - 2m)^2 = 9n^2 - 12mn + 4n^2

The correct answer is D. 9n^2 - 12mn + 4n^2

Hope this helps!

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Help asap thank you!!!!!
viktelen [127]

Answer:

A = 120

C = 45

Step-by-step explanation:

(12x + 12) + 15 + (3x + 18) = 180

(12x + 3x) + (12 + 15 + 18) = 180

15x + 45 = 180

15x = 180 - 45

15x = 135

x = 135/15

x = 9

A = 12x + 12 = 12(9) + 12 = 108 + 12 = 120

C = 3x + 18 = 3(9) + 18 = 27 + 18 = 45

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3 years ago
Given that the measure of ∠x is 123°, and the measure of ∠y is 51°, find the measure of ∠z. °
Veronika [31]

Answer:

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Step-by-step explanation:

6 0
4 years ago
The function given represents the temperature of a sauna set to 180°F. The temperature goes up and down throughout the day. Find
nasty-shy [4]

Answer:

The answer is below

Step-by-step explanation:

Given the function as:

f(x)=5sin(πx / 15)+180,

a) The angular frequency (ω) = 2π * frequency

but ω = π/15, hence:

π/15 = 2π * frequency

frequency = (π/15)/2π

frequency = 1/30 hertz

Period (T) = 1/frequency = 1/(1/30) = 30 seconds

b) The period is 30 seconds. This means that it reaches the maximum temperature every 30 seconds.

In one hour (3600 s), the number of times the function reaches a maximum temperature = 3600 s / 30 s = 120

3 0
3 years ago
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denpristay [2]

Answer:

D is the polynomial. A is a binomial with only 2 terms, as is B and C. D is a trinomial with three terms, and is considered a polynomial.

Hope this helps!

8 0
3 years ago
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ValentinkaMS [17]

9514 1404 393

Answer:

  no solution

Step-by-step explanation:

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3 0
3 years ago
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