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seraphim [82]
3 years ago
12

Solve the system: (MAFS.912-A-REI.3.6)

Mathematics
1 answer:
faust18 [17]3 years ago
7 0

Step-by-step explanation:

4x + 7y = 41 \\ 4 \times ( - 7) + 7 \times ( - 16) = 41

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Can someone please help me thanks :)
Dmitrij [34]
29 degrees. You can just add 12 and 17 to find this, since the 12 is negative
7 0
3 years ago
I need help asap :):):)
Diano4ka-milaya [45]

Answer: I think the last option is the correct answer.

Step-by-step explanation:

8 0
3 years ago
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What is the solution to the expression –2 – 3 – (–4)?
Contact [7]
-2 - 3 -(-4)= -2 - 3 + 4
-2 - 3 + 4
-5 + 4
= -1
7 0
3 years ago
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Convert the polar representation of this complex number into its standard form z=4(cos150+isin150).
Katen [24]

Answer:

B

Step-by-step explanation:

Using the exact values

cos150° = - cos30° = - \frac{\sqrt{3} }{2}

sin150° = sin30° = \frac{1}{2}

Given

z = 4(cos150° + isin150° ) , substitute values

  = 4(- \frac{\sqrt{3} }{2} +  \frac{1}{2}i )

  = - 2\sqrt{3} + 2i , that is

(- 2\sqrt{3}, 2 ) → B

7 0
3 years ago
Sec(x)-tan(x)=1/sec(x)+tan(x)
Rama09 [41]

Answer:

Step-by-step explanation:

I assume that you mean

sec(x)-tan(x) = 1 / ( sec(x) + tan(x) ) , right ?

then this is equivalent to

[ sec(x) - tan(x) ] x [ sec(x) + tan(x) ] = 1

let s evaluate it, we got

sec2(x) - sec(x)tan(x) + - sec(x)tan(x) - tan2(x) = sec2(x) - tan2(x)

= (1 - sin2(x) ) / cos2(x) = cos2(x) / cos2(x) = 1

as cos2(x) + sin2(x) = 1

3 0
3 years ago
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