3 years ago

What is the greatest perimeter of a rectangle with an area of 39 ft.²

Mathematics

1 answer:

Grace [21]3 years ago

5 0

The greatest perimeter of a rectangle with an area of 39 ft.² is 78

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Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39. For any minutes over 200, Ben is cha

faltersainse [42]

Answer:

$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

Step-by-step explanation:

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39.

We are also told that For any minutes over 200, Ben is charged $0.35 per minute.

let x be the minutes used each month

So, if $x\leq 200$

So, coat will be $39

If $x>200$

So, Ben is charged $0.35 per minute

So, when $x>200$

So, charge = $39+(x-200)\times 0.35$

So, the piecewise functions accurately represents charges based on Ben's cell phone :

$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

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3 years ago

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Use the Distributive Property to find the Product 4 and 2/5 × 10

arlik [135]

Distributive Property ( A number, n, is multiplied to the expression in parentheses)

$4( \frac{2}{5} \times 10) = \\ 4( \frac{20}{5} ) = \\ 4(4) = 16$

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3 years ago

Cark earned grades of 62, 78, 59, and 89 on four tests.<br><br><br>what is the mean of his grades

serious [3.7K]

Answer:

Step-by-step explanation:

mean=average. to get average, you add up the numbers and divide by how many numbers. they add upp to 288 and since theres 4 test grades, divide by 4 to get 72.

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2 years ago

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Diana uses 30 grams of coffee beans to make 48 fluid ounces of coffee. When guests come, she makes 96 fluid ounces of coffee. Ho

Ulleksa [173]

Answer:

60 grams

Step-by-step explanation:

48x2=96

30x2=60

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3 years ago