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3 years ago

Evaluate -3 a parentheses 2b minus 4C parentheses a equals negative 3 B equals two and C equals -7

Mathematics

1 answer:

Natasha2012 [34]3 years ago

7 0

Answer:

288

Step-by-step explanation:

We want to evaluate the expression:

$- 3a(2b - 4c)$

For

$a = - 3 \\ b = 2 \\ c = - 7$

We substitute the given values into the expression to get:

$- 3( - 3)(2 \times 2 - 4 \times - 7)$

This gives us:

$9(4 + 28)$

Evaluate the parenthesis:

$9(32)$

$= 288$

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4 years ago

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makkiz [27]

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Step-by-step explanation:

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3 years ago

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3 years ago

This expression represents the average cost per game, in dollars, at a bowling alley, where n represents the number of games:

Dmitry_Shevchenko [17]

Answer:

Average Cost per game for 4 games is:

A) $4.75

Step-by-step explanation:

As the question is not complete, lets complete it first.

At the bowling Alley, shoe rentals cost $3 while a games costs $3. The expression that represents the average costs per game 'c' , in dollars, where n is the number of games, is:

$c=\frac{4n+3}{n}$

To find average cost per game, for 4 games, simpli substitute n=4 into the given equation:

$c=\frac{4n+3}{n}\\c=\frac{4(4)+3}{4}\\c=\frac{16+3}{4}\\c = \frac{19}{4}\\c= 4.75$

So Average Cost per game for 4 games is:

c = 4.75$

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3 years ago