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Leokris [45]
3 years ago
15

Please help me out please please y'all help please please ASAP please

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0

Answer:

x=20

Step-by-step explanation:

(4x-12)+(x+2)=90

5x-10=90

5x=100

x=20

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Kirk's average driving speed is 7 kilometers per hour faster than Thor's. In the same length of time it takes Kirk to drive 450
alexandr402 [8]

Answer:

x = 816 kilometers per hour.

Step-by-step explanation:

Given the following data;

Distance traveled by Kirk = 450km

Distance traveled by Thor = 408 km

Let the average driving speed of Thor be x.

Translating the word problem into an algebraic equation;

k = x + 6

We know that the time taken to cover a distance by an object with speed is given by the formula;

Time = distance/speed

Substituting into the equation, we have;

408/x = 405/x + 6

Cross-multiplying, we have;

408*(x + 6) = 405*x

408x + 2448 = 405x

408x - 405x = 2448

3x = 2448

x = 2448/3

x = 816 kilometers per hour.

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3 years ago
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3 years ago
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lina2011 [118]
The answer is 6 btw it’s wrong!
5 0
3 years ago
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What are the additive and multiplicative inverses of h(x) = x - 24?
Marrrta [24]

Answer:

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Step-by-step explanation:

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4 0
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Every month, Jim makes $49 less than his best friend Keenan.
ad-work [718]

Answer:

m+49=d ; d-49 = m

Step-by-step explanation:

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2 years ago
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