2 years ago

Determine the center and radius of the following circle equation: x2 + y2 + 4x + 20y + 68 = 0

Mathematics

1 answer:

sammy [17]2 years ago

7 0

Answer:

center( -2,-10)

radius:6

Step-by-step explanation:

I hope this helps.

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Th the mean of the data is set 15 what number is missing<br> 18,16_,9,12,23

Wittaler [7]

Answer:

The missing number on the given data set is 12.

Step-by-step explanation:

Here, the set of data = 18,16_,9,12,23

Let us assume the missing number in the data = m

The mean of the data = 15

Total number of observations = 6

Now, Sum of the data = 18 + 16 + m + 9+ 12+ 23 = 78 + m

Also, $\textrm{ Mean of the given Data} = \frac{\textrm{Sum of all observation in the data}}{\textrm{Total number of observations}}$

$\implies 15 = \frac{78+ m}{6} \\or, 15(6) = 78 + m\\\implies m = 90 -78 = 12$

or, m = 12

Hence, the missing number on the given data set is 12.

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3 years ago

Which statement is not always true?

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Statement #3: The product of two irrational numbers is not always irrational.

If you multiply √3 and 1/√3, both irrational numbers that are inverses of each other, you end up getting 1, which is rational.

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2 years ago

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2 years ago

Y + 7 = 4(x + 2)<br> Write in standard form.

rjkz [21]

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2 years ago

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Harriet has $25 in her savings account. She will add $5 each week and not take any money out of her account. Which expression re

svlad2 [7]

Answer:

$(25+5x) or $5(5+x)

Step-by-step explanation:

multiply x with $5 = $5x

add $25 to $5x = $(25+5x)

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