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Citrus2011 [14]
3 years ago
13

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Mathematics
1 answer:
lawyer [7]3 years ago
3 0

Answer:


Step-by-step explanation:

x+y=12

x-y=18

Now eliminate the y by adding the two equations together to get

2x=30

x=15

then solve for y.

15+y=12

15-y=18

y= -3

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Find the volume of a cube that has the following dimensions:length=2x^2 width=x^3 height=x^2-6x+5 A) 4x^7-3x^6+8x^5 B) 2x^12-12x
fomenos

Answer:

Option D. 2x⁷ - 12x⁶ + 10x⁵

Step-by-step explanation:

From the question given:

Length (L) = 2x²

Width (w) = x³

Height (h) = x² - 6x + 5

Volume (V) =?

Volume (V) = length (L) x width (w) x height (h)

V = L x w x h

V = 2x² × x³ × x² - 6x + 5

V = (2x²) (x³) (x² - 6x + 5)

V = (2x⁵) (x² - 6x + 5)

Clear bracket

V = 2x⁷ - 12x⁶ + 10x⁵

Therefore, the volume of the cube is 2x⁷ - 12x⁶ + 10x⁵

4 0
3 years ago
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Sergeu [11.5K]

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5 0
2 years ago
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What best describes the end behavior of the graph of f(x)=-x^4+5x-5
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Answer:

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Step-by-step explanation:

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
yan [13]

Answer:

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Step-by-step explanation:

The surface area SA of the cone is the sum of the base area B and the lateral area LA. The lateral area is half the product of the circumference and the slant height. The radius is half the diameter, so is 4 inches.

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Filling in the numbers, you have ...

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7 0
3 years ago
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