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3 years ago

a room to be carpeted is 20 ft length and 20 ft width and cost $2.25 a square foot. how much do it cost to carpet the room?

1 answer:

7 0

$900

Explanation

First, you would need to find the area of the carpet which would be length x width, equaling to 400 ft., then you’d multiply the area of the carpet (400ft) by the cost for each square foot (2.25) leaving you with the total, $900

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How would you integrate (2x-1)(6x+5)? is there a product rule for integration?

NikAS [45]

No, there is not a product rule for integration.

To integrate (2x - 1)(6x + 5), start expanding the product:

(2x - 1)(6x + 5) = 12x^2 + 10x - 6x - 5 = 12x^2 + 4x - 5.

Now, I guess you know how to integrate that:

∫ (12x^2 + 4x - 5) dx = ∫12x^2 dx + ∫4x dx + ∫ (-5) dx = 4x^3 + 2x^2 - 5x + C

4 0

4 years ago

A clock that loses 5 seconds each hour has not been reset for 48 hours. What time does the clock show if the correct time is 8:4

nikklg [1K]

Answer:

8:45

Step-by-step explanation:

5x48=240 sec

240 sec = 4 min

8:49-4min= 8:45

7 0

2 years ago

Read 2 more answers

The perimeter of a rectangle is 44. The length is 5 less than double the width. What is the length?

OleMash [197]

$44 = 2x - 5 \\ \frac{39}{2} = \frac{2x}{2} \\ 19.5 = x \\$

4 0

3 years ago

Shawna took a test that had a total of 20 items. She got 4/5 of the items correct. How many items did she get correct?

ehidna [41]

Shawna got 16 items correct

Step-by-step explanation:

To find the percentage of answers or part of total answers we multiply the fraction with the total number of items.

Given

Total items on test = 20

Correct items fraction = 4/5

Then,

$Correct\ items=\total\ items * \fraction\ of\ correct\ answers\\= 20 * \frac{4}{5}\\=\frac{80}{5}\\=16$

Shawna got 16 items correct

Keywords: Percentage, fractions

Learn more about fractions at:

#LearnwithBrainly

4 0

4 years ago

$149 guitar; 29% discount

Vikki [24]

Divide number of guitars by 100% and multiply into discount given

149/100 x 29

1.49 x 29

43.21

$43.21 had been removed

Therefore $105.79 is the guitar cost after discount

Hope it was useful ☻

5 0

3 years ago

a room to be carpeted is 20 ft length and 20 ft width and cost $2.25 a square foot. how much do it cost to carpet the room? ​

a room to be carpeted is 20 ft length and 20 ft width and cost $2.25 a square foot. how much do it cost to carpet the room?