3 years ago

1. Write an algebraic phrase for this verbal expression.

Mathematics

1 answer:

Sphinxa [80]3 years ago

7 0

1. 4 - 5 * #

2. (-2.4).

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3 years ago

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If y varies directly as x and y = 21 when x = 5, find x when y = 42.

Lorico [155]

Answer: 10

<u>Step-by-step explanation:</u>

varies directly means: $\frac{y}{x} = k$

Step 1: solve for k ⇒ $\frac{21}{5} = k$

Step 2: plug in the given value and k to solve for the missing value: $\frac{42}{x} = \frac{21}{5}$

42(5) = 21(x)

$\frac{42(5)}{21} = \frac{21(x)}{21}$

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2 years ago

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bonufazy [111]

Answer:

y-k

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Step-by-step explanation:

Given E &D, F would be at (x, k).

That means E to F would be y-k.

And F to D would be x-h.

I assume you don’t need to find E to D, since that’s just r. (You could use the Distance Formula or Pythagoreans theorem to come up with and equation, but it wouldn‘t be one of those listed.)

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Flura [38]

Answer:

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Step-by-step explanation:

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What is this answer?

valentina_108 [34]

The answer is d

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