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sladkih [1.3K]
3 years ago
7

-6x+9=33 ???? What is the value of x ?

Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0

<span>Well, the answer will definitely be negative because there is a minus sign.</span>

<span>-6x=24 - because I took away the 9 from both sides. (33-9=24)</span>

9 is now gone, so now we do 24 divided by -6. <span />

<span>So this means <span>x = -4.</span></span>

<span><span>:)</span></span>

Goshia [24]3 years ago
3 0
In this case, you have to get -6x on one side, and the digits on the other. To eliminate the +9, you have to subtract it, as you always use the opposite operation. This then gives you -6x=24. You then have to divide 24 by 6, giving you -4. Therefore, x=-4
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DIA [1.3K]

Answer:

PQ = √84 = 2√21 in ≈ 9.165 in

Step-by-step explanation:

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Q ∈ BC and AQ is the altitude of the base.

Let BQ = x in ⇒ CQ = (21 - x) in

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Equating (1) and (2)

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∴  10² - x² = 17² - 21² + 42x - x²

∴ 10² - 17² + 21² = 42x

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∴ AQ² = AB² - BQ² = 10² - x² = 100 - 36 = 64 = 8²

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∵ The lateral edge PA of a triangular pyramid ABCP is perpendicular to the base

∴ PA⊥AQ

∴ ΔPAQ is a right triangle at A,

PA = 2sqrt5 in  and AQ = 8 in

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∴ PQ = √[(2√5)² + 8²] = √(20+64) = √84 = 2√21 in ≈ 9.165 in

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