3 years ago

Express √-225 in its simplest terms

Mathematics

2 answers:

Yuri [45]3 years ago

6 0

Answer:

15i

Step-by-step explanation:

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Montano1993 [528]3 years ago

4 0

Answer:

Step-by-step explanation:

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simplify the following expression by combining like terms. select the most simplified expression; 2 W + 5 W - 6 + 4w

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7 W + 4w - 6

Step-by-step explanation:

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Single adults: According to a Pew Research Center analysis of census data, in 2012, 20% of American adults ages 25 and older had

dmitriy555 [2]

Answer:

Option B

Step-by-step explanation:

The number that had never been married will vary in each sample due to the random selection of adults.

This number will vary in each sample to the random selection process but they might or might not be as close as possible to one another after sampling.

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A certain circle can be represented by the following equation. x^2+y^2+18x+14y+105=0 What is the center of the circle? What is t

Gre4nikov [31]

Answer:

See below.

Step-by-step explanation:

Recall the equation for a circle:

$(x-h)^2+(y-k)^2=r^2$ , where (h,k) is the center and r is the radius.

We need to turn the given equation into the above format. We do this by completing the square.

First, group them:

$(x^2+18x)+(y^2+14y)=-105$

For the first section, complete the square for $x^2+18x$ :

$x^2+18x+81-81$

$(x+9)^2-81$

Do the same for the second:

$y^2+14y$

$y^2+14y+49-49$

$(y+7)^2-49$

All together:

$((x+9)^2-81)+((y+7)^2-49)=-105$

$(x+9)^2+(y+7)^2-130=-105$

$(x+9)^2+(y+7)^2=25$

The center is (-9,-7).

The radius is $\sqrt{25}=5$

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Question 16

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Step-by-step explanation:

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A shop sells stuffed animals. The sales team calculated that today's bear sales were 5 more than 5/4ths the number of all

slega [8]

Answer:

Step-by-step explanation:

25-5=20, 5/4*20=25

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