3 years ago

Use Euler's Formula to find the missing number. vertices:14 Edges:36 Faces:?

Mathematics

2 answers:

TEA [102]3 years ago

7 0

Answers to the quiz; Surface areas of pyramids and cones quiz

1. A
2. B
3. A
4. B
5. A
6. A
7. C
8. C
9. D
10. A

alina1380 [7]3 years ago

3 0

The answer to number one is A.24

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{ y = - 4x-23-4x-3y=13

sleet_krkn [62]

For this case we have the following system of equations:

$y = -4x-23\\-4x-3y = 13$

We solve by the substitution method:

We substitute the first equation in the second equation:

$-4x-3 (-4x-23) = 13$

We apply distributive property considering that $- * - = +:$

$-4x + 12x + 69 = 13\\8x + 69 = 13$

We subtract 69 from both sides of the equation:

$8x = 13-69\\8x = -56$

We divide by 8 on both sides of the equation:

$x = \frac {-56} {8}\\x = -7$

We look for the value of the variable y:

$y = -4 (-7) -23\\y = 28-23\\y = 5$

Thus, the solution of the system is $(x, y): (-7,5)$

Answer:

$(x, y): (-7,5)$

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3 years ago

One angle of an octagon is 65º. The others are equal to each other. Find them.

r-ruslan [8.4K]

Answer:

42 1/7 degrees

Step-by-step explanation:

65+7x=360

7x=295

x=42 1/7

8 0

3 years ago

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Identify the y-intercept for the line 4x – 2y = 4

stellarik [79]

Answer: (0,-2)

Step-by-step explanation: uhdehdwhehehhH

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3 years ago

Lus Find the measure of 46. 46 = [?] 24 46 Enter

defon

Answer:

Step-by-step explanation:

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2 years ago

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I need helppppppp plzzzzzz

Zanzabum

14 x 10^3 = 14,000 (the elephants weight)

So the cat weighs 14 pounds

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3 years ago

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