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snow_lady [41]
3 years ago
5

Work out the value of the first negative term of the sequence 25 - 3n

Mathematics
1 answer:
fiasKO [112]3 years ago
3 0

Answer:

-2.

Step-by-step explanation:

3n must be greater than 25 for the first negative term:

3n > 25

n > 25/3

n > 8 1/3.

So n = 9 and the first negative term is 25 - 3*9

= 25 - 27

= -2.

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Angle A is 2x + 3
Angle B is 4x + 2
Angle C is 2x - 1

The three angles add up to 180
So:
2x + 3 + 4x + 2 + 2x - 1 = 180
Combine terms
8x +  4 = 180
Subtract 4
8x = 176
x = 22

Now we solve for the angles:
Angle A is 2(22) + 3 = 44 + 3 = 47
Angle B is 4(22) + 2 = 88 + 2 = 90
Angle C is 2(22) - 1 = 44 - 1 = 43

Quick check: 47 + 90 + 43 = 180
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Read 2 more answers
Given h(x) =3x-4 find x if h(x) =17
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Answer:

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