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alexandr402 [8]
2 years ago
6

Simplify the following completely, show all work. √-45

Mathematics
1 answer:
scoray [572]2 years ago
7 0

Answer:

3\sqrt{5}i

Step-by-step explanation:

\sqrt{-45}

\sqrt{-9*5}

\sqrt{-9}\sqrt{5}

3i\sqrt{5}

3\sqrt{5}i

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Refer to your math writing journal file named "Lines and Angles." What real-world examples did you describe for the three ways i
Sav [38]

Answer:

  1. Railway lines are example of parallel lines
  2. The floor and the walls of a room are example of perpendicular lines
  3. Two roads crossing at a signal can be termed as example of intersecting lines

Step-by-step explanation:

The lines can be related in following three ways

  1. Lines can be parallel
  2. Lines can be perpendicular
  3. Lines can be intersecting at an angle other than 90.

Now three real life examples of above three scenarios are described below:

  1. Railway lines are example of parallel lines
  2. The floor and the walls of a room are example of perpendicular lines
  3. Two roads crossing at a signal can be termed as example of intersecting lines
6 0
3 years ago
Simplify: -3^2+8÷2×4-|-9|
NNADVOKAT [17]
Follow the order of operations. Evaluate absolute value first.
-3^2+8/2*4-9

Then evaluate exponents
9+8/2*4-9

Then evaluate multiplication and division from left to right
9+4*4-9
9+16-9

Then evaluate addition and subtraction from left to right
25-9
16

Final answer: 16
8 0
3 years ago
To find 23 times 8, double and halve
Papessa [141]
The answer is 184. 23 * 8 = 184. 184 * 2 = 368. 368 ÷ 2 = 184
6 0
3 years ago
Read 2 more answers
a law firm charges $100 per hour plus a $300 origination fee for its services find a function notation
Kisachek [45]
F(t)= $100 x h + 300 A reasonable domain is (1,2,3) and the range is ($400,$500,$600)
5 0
3 years ago
What is the solution to the quadratic equation 8m^2+7m-15=-7 ?
Aleks04 [339]
Make equal to zero
add7 both sides
8m^2+7m-8=0
quadratic fomrula

if you have
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}

8m^2+7m-8=0
a=8
b=7
c=-8

x=\frac{-7+/- \sqrt{7^{2}-4(8)(-8)} }{2(8)}
x=\frac{-7+/- \sqrt{49+256} }{16}
x=\frac{-7+/- \sqrt{305} }{16}

x=\frac{-7+ \sqrt{305} }{16} or x=\frac{-7- \sqrt{305} }{16}

aprox
x=-1.52902 or 0.654016


4 0
3 years ago
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