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3 years ago

14

Tim earns $31 after 2 hours, $46.5 after three hours,

1 answer:

sladkih [1.3K]3 years ago

6 0

Answer:

Step-by-step explanation:

The clue here is to determine how much he makes in 1 hour, then see if that amount works for 2 hours and 3 hours. If we know that he makes $31 in 2 hours, then 31/2 is $15.50. And $15.50 times 2 hours is $31, and $15.50 times 3 hours is $46.50. So the equation that represents the amount of money Tim makes is y = 15.5x, where y is the amount of money he makes when he works x number of hours at $15.50 per hour.

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3 years ago

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3 years ago

Simplify this algebraic expression.

Maru [420]

Answer:

D

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$y - \frac{3}{3} + 12$

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3 years ago

sasho [114]

Answer:

$y = \frac{3}{4} x - \frac{3}{2}$

Step-by-step explanation:

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$- 6 \: from \: both \: sides$

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$divede \: by \: 2 \: on \: both \: sides$

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3 years ago

A scientist who studies teenage behavior was interested in determining if teenagers spend more time playing computer games then

Marina86 [1]

Answer:

- The amount of time greater than 10.2 hours for this year.

- The $P_{value}$ is 0.01358.

Step-by-step explanation:

Given information:

mean, X = 10.2 hours

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using t distribution

test statistics = 2.822

$P_{value}$ = 2 x P( $t_{n-1}$ > test statistics)

= 2 x P( $t_{15-1}$ > 2.822)

= 2 x 0.00679

= 0.01358

$P_{value}$ is less than 0.10 which indicates that the amount of time greater than 10.2 hours for this year.

5 0

4 years ago