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2 years ago

7

A box of coins contains nickels, dimes and quarters. The value of the coins is $4.00. If there were 3 times as many nickels, hal

f as many dimes, and 6 more quarters, the value of the coins would be $5.50. How many quarters are in the box?

2 answers:

frez [133]2 years ago

8 0

Step-by-step explanation:

s ks ok w merto s mak osmwokwmsos

Whitepunk [10]2 years ago

5 0

I think the answer is 23 because Blalabalaka

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3 years ago

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3 years ago

48/4+[6+{12/2 of 3}-4]+20

ivanzaharov [21]

Step-by-step explanation:

48/4+[6+{12/2 of 3}-4]+20

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2 years ago

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victus00 [196]

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3 years ago

Find the constant of variation k for the direct variation

Alla [95]

Answer:

The constant of variation is k = -2 ⇒ (B)

Step-by-step explanation:

The equation of the direct variation is y = k x, where

k is the constant of variation

The constant of variation k = $\frac{y}{x}$

The given table has 4 points (-1, 2), (0, 0), (2, -4), (5, -10)

We can use one of the points <em>[except point (0, 0)]</em> to find the value of k

∵ (-1, 2) is a given point

∴ x = -1 and y = 2

∵ k = $\frac{y}{x}$

→ Substitute the values of x and y in the relation above

∴ k = $\frac{2}{-1}$

∴ k = -2

The constant of variation is k = -2

7 0

3 years ago