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IgorC [24]
3 years ago
9

will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!

! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!!

Mathematics
2 answers:
Marrrta [24]3 years ago
6 0

Answer:

849.24 cm²

Step-by-step explanation:

we know it is a cube so to find the surface area of each square you do

12x12=144 and there are 5 sides so 144x5=720

We know sides of the squares are 12 cm so half of that (6) would be the bottom of the triangle

Now using pythagorus you would do a²+b²=c²

15²+6²=c²

225+36=c²

√261=√c²

16.15=c       this only half of one of the sides of the pyramid so you would times 16.15 by 8 to equal 129.24

now add 720+129.24=849.24 cm²

Molodets [167]3 years ago
5 0

Answer:

386.38

Step-by-step explanation:

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lukranit [14]

Using the perimeter of the rectangle, it is found that she should buy at most 16 plants.

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The perimeter of a rectangle of length l and width w is given by:

P = 2(l + w)

In this question, the perimeter is of 1 ft by 4.5, thus, l = 1, w = 4.5, and the perimeter is:

P = 2(1 + 4.5) = 2(5.5) = 11

  • Perimeter of 11 ft.
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1 plant - 2/3 ft

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Applying cross multiplication:

\frac{2x}{3} = 11

2x = 33

x = \frac{33}{2}

x = 16.5

At least 8 inches apart(can be more), thus she should buy at most 16 plants.

A similar problem is given at brainly.com/question/10489198

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2 years ago
Please answer this question. I will give 100 points and brainliest. I need this done fast.
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Answer is D) I and II only.

Step-by-step explanation:

If C=5/9(F-32) that means that the temperature is increased by 5/9 of a degree every one F degree. Also II is right because of the laws of thermodynamics.

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2 years ago
Which expression best represents the difference between triple a number and double a number?
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C. x³ - x²

In word problems, there terms which indicate the mathematical operation that needs to be performed.

difference = refers to the answer in subtraction
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in triple a number = a number is multiplied by itself three times.
in double a number = a number is multiplied by itself two times.

It would initially look like this: (x * x * x) - (x * x); to simplify the expression, a number to be multiplied is written down and the number of times it will multiply by itself is noted on the upper right side of the number when we look at it.

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stellarik [79]

Answer:

9.11x10^-28

Step-by-step explanation:

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