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2 years ago

7

Betty has several of the standard six-sided dice that are common in many board games. If Betty rolls one of these dice, what is

the probability that: she rolls a three

1 answer:

diamong [38]2 years ago

7 0

Since she is rolling 1 six sided dice the chances of her rolling a 3 are 1:6 because, she is trying to land on 3 not 3 numbers.

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2 years ago

A rectangle has a perimeter of 165.4 kilometers and a height of 20 kilometers. What is the length of the base?

KATRIN_1 [288]

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How many terms are in the expression 2m²n + 2mn² - m + 3n + 9

IgorC [24]

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2 years ago

Lucy earns money babysitting. Her earnings and hours worked represent a direct variation. She worked for 4 hours and earned $25.

SashulF [63]

For this case we have that by definition, a direct variation is given in the form:

$y = kx$

Where:

k: It is the constant of proportionality

According to the statement we have to:

$y = 25\\x = 4$

Substituting:

$25 = k4\\k = \frac {25} {4}$ $k = 6.25\ for\ \frac {dollars} {hour}$

On the other hand we have:

$y = 4\\x = 25\\4 = k25\\k = \frac {4} {25}$

$k = 0.16\ for\ \frac {hours} {dollar}$

Answer:

$k = 6.25 for \frac {dollars} {hour}\\k = 0.16 for \frac {hours} {dollar}$

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2 years ago