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Nataliya [291]
3 years ago
13

A stack of boards is 21 inches high. Each board is 1 3/4 inches thick. How many boards are there

Mathematics
1 answer:
Hunter-Best [27]3 years ago
7 0
21 divided by 1 3/4 equals twelve

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Write x(x+1)^2(x-5)/x(x+2)(x-5)^3 in simplest terms. Show your work
Simora [160]

Answer: (x+1)^2(x-5)^4(x+2)

Step-by-step explanation: 1. Cancel x  (x+1)^2(x-5)(x+2)(x-5)^3

Use The product Rule: x^a x^b= x ^a+^b and your answer should be (x+1)^2(x-5)^4(x+2)

4 0
3 years ago
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20 POINTS TO WHO EVER GETS IT RIGHT
yuradex [85]
The answer is A i think.
5 0
3 years ago
The floor of a canyon has an elevation of −14.5−14.5 feet. Erosion causes the elevation to change by −1.5−1.5 feet per year. How
Alona [7]
<span>The canyon starts at an elevation of (-14.5). After each year, the elevation drops by (-1.5). The equation that could be written for this, then, would be (-14.5 - 1.5x = -31). First, we could add 14.5 to both sides of the equation to isolate the unknown. This would leave -1.5x = -16.5. Next, we can remove the negative signs so both sides of the equation are positive and easier to work with. This leaves 1.5x = 16.5. Finally, dividing both sides by 1.5 gives us "x = 11", which means that after 11 years, the canyon floor will be at -31 feet.</span>
4 0
4 years ago
144<br><br> A. Is not a perfect square <br> B. Is a perfect square
Nata [24]
Yes 144 is a perfect square because 12*12=144
6 0
3 years ago
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Help I will be marking brainliest!!
Korolek [52]

Answer:

<u>Given</u>: base = 10.4ft, height = 12.5

Area of octagon = 8(1/2 × b × h)

  • 8(1/2 × 10.4 × 12.5)
  • 520ft²

Volume of pool = 520ft² × 3ft

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Now, 1 cubic ft takes 7.5 gallons to fill.

Therefore, 1560 cubic ft takes,

  • 1560 × 7.5
  • 11700

So, <u>Correct choice</u> - [D] 11,700.

3 0
3 years ago
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