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valkas [14]
3 years ago
7

Simplify the square root of -72

Mathematics
1 answer:
kupik [55]3 years ago
5 0

Answer:

6i\sqrt{2}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} = \sqrt{ab} and \sqrt{-1} = i

Given

\sqrt{-72}

= \sqrt{36(2)(-1)}

= \sqrt{36} × \sqrt{2} × \sqrt{-1}

= 6\sqrt{2} × i

= 6i\sqrt{2}

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15
aleksandr82 [10.1K]

NO THOS IS NOT TRUESNBDJDN

8 0
3 years ago
Find slope of both lines and determine if parallel, perpendicular or neither
Oxana [17]

Answer:

Parallel

Step-by-step explanation:

y=5x+10

y=5x-15

3 0
2 years ago
Given the points (3, 0) and (-1, -3), which of the statements below is true?
nalin [4]
Answer:
We know the x-intercept only

Explanation:
To answer this equation, we need to go through the options individually and use both points to determine if they are true or false.

• Option 1 - False
According to the the first point given, we know the x-intercept is (3, 0).

• Option 2 - True
We only know the x-intercept. It is (3, 0) which is the first point given. We do not know the y-intercept.

• Option 3 - False
We do not know the y-intercept. We only know the x-intercept. In order to know the y-intercept the second point given must include a zero as the x point. The second point give does not include a zero. It is (-1, -3).

• Option 4 - False
We do not know the y-intercept
8 0
3 years ago
Use 3.14 for r. Round your answers to
galben [10]

Answer:

I think its A........ I don't really know.

Step-by-step explanation:

5 x 2 = 10

3.14 x 10 = 31.4

3 0
3 years ago
What is the area of the trapezoid shown below?​
Olin [163]

Answer:

78 sqr units

Step-by-step explanation:

Use the Pythagorean Theorem to help find the base opposite the two.

The base of the second parallel line is sqrt(  (15^2) - (12^2)  ) = sqrt(81) = 9

The second base = 9 + 2 = 11

Area = (b1 + b2)*h/2

h = 12

b1 = 2

b2 = 11

h = 12

Area = (11 + 2)*12/2

Area = 13 * 12/2

Area = 78 square units

7 0
3 years ago
Read 2 more answers
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