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2 years ago

A jar has 9 pennies.

Mathematics

1 answer:

sp2606 [1]2 years ago

6 0

Answer:

3/40

Step-by-step explanation:

Probability (Quarter 1st) :

⇒ Number of quarters / Number of coins

⇒ 5 / 9 + 3 + 8 + 5

⇒ 5/25

⇒ 1/5

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The coin is not replaced.

Probability (Penny 2nd) :

⇒ No. of pennies / Total - 1

⇒ 9 / 25 - 1

⇒ 9/24

⇒ 3/8

==========================================================

Probability (both) :

⇒ 1/5 × 3/8

⇒ 3/40

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Which function has a greater rate of change? Function A: x 1.5 2.5 3.5 4.5 5.5 y 5 0 –5 –10 –15 Function B: y = –4.5x + 15 Funct

expeople1 [14]

Answer:

Function A has a rate of change of -5 and Function B has a rate of change of -4.5, so Function B has a greater rate of

Step-by-step explanation:

Function A:

$\begin{array}{cccccc}x & {1.5} & {2.5} & {3.5} & {4.5} & {5.5} \ \\ y & {5} & {0} & {-5} & {-10} & {-15} \ \end{array}$

Function B:

$y = -4.5x + 15$

Required

Which has a greater rate of change

The rate of change of function A is calculated as thus:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

Where:

$(x_1,y_1) = (1.5,5)$

$(x_2,y_2) = (2.5,0)$

So, we have:

$m = \frac{0-5}{2.5 - 1.5}$

$m = \frac{-5}{1}$

$m = -5$

For function B

The general function is:

$y = mx + b$

Where

m is the rate of change

By comparing $y = mx + b$ to $y = -4.5x + 15$

$m = -4.5$

So, we have that:

Function A has a rate of -5; function B has a rate of -4.5.

By comparison: -4.5 is greater than 5

Hence, function B has a greater rate.

4 0

3 years ago

S - 90.45 = 190.32 what does s equal s =

iren2701 [21]

Answer:

280.77

Step-by-step explanation:

190.32+90.45 is 280.77. To recheck this answer you can do 280.77 - 90.45 and you get 190.32.

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3 years ago

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ipn [44]

Answer:

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Step-by-step explanation:

When x=4, substitute 4 into the function to give f(4).

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Rom4ik [11]

Answer:

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Step-by-step explanation:

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coldgirl [10]

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