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fomenos
3 years ago
6

Help pls √-4 - √-25 Express complex numbers in terms of i

Mathematics
2 answers:
Bess [88]3 years ago
6 0
That would become 2i minus 5i which gives you negative 3i
kow [346]3 years ago
5 0

i=\sqrt{-1}\\\\\sqrt{-4}=\sqrt{(4)(-1)}=\sqrt4\cdot\sqrt{-1}=2i\\\\\sqrt{-25}=\sqrt{(25)(-1)}=\sqrt{25}\cdot\sqrt{-1}=5i\\\\\sqrt{-4}-\sqrt{-25}=2i-5i=-3i

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HURRY QUICKLY PLEASE William measures the length of three sides of a building. Place the lengths in order from greatest to least
insens350 [35]

Answer:

104m, 0.096km, 2100cm

Step-by-step explanation:

0.096 kilometres = 9600

2100 cm

104m = 10400 cm

10400, 9600, 2100

104m, 0.096km, 2100cm

Answered by Gauthmath

4 0
2 years ago
In ABC, A = 4x, B = 3x + 1, C = 7x + 11. List the sides of ABC in order from shortest to longest.
BlackZzzverrR [31]

Sum of all angles of a triangle is equal to 180°. Therefore,

A + B + C = 180

Given that, A = 4x, B = 3x + 1, C = 7x + 11.

Hence, we can set up an equation as following:

4x + 3x + 1 + 7x + 11 = 180

14x + 12 = 180 Combine the like terms.

14x + 12 -12 = 180 - 12 Subtract 12 from each sides.

14x = 168

\frac{14x}{14} =\frac{168}{14} Divide each sides by 14.

So, x= 12.

Now by plug in x=12 in the given expressions of A, B and C we can get the measure of eah angles of the triangle. Therefore,

A = 4x = 4(12) = 48

B= 3x + 1= 3(12) + 1 = 36 + 1 = 37

C= 7x + 11 = 7(12) + 11 = 84 + 11 =95

From the above result we can see that C is the largest angle and B is the smallest angle.

There is a relationship of a triangle which state that the largest side is opposite side of the largest angle and similarly smallest side is opposite side of the smallest angle.

Here AB is the opposite side of the largest angle C. So, AB is the largest side.

Similarly AC is the smallest side.

So, the order from shortest to longest is B: AC, BC, AB

7 0
3 years ago
Express in scientific notation 235.4​
Mariana [72]

Answer:

2.354 × 10^2 is it

Step-by-step explanation:

3 0
3 years ago
The distance on a numberline from -10 to 3 is equal to 5x-12.
Viefleur [7K]

Answer:

  1. 13
  2. x = 5

Step-by-step explanation:

To find the total distance, we can add.

10 + 3 = 13

Now, we can use 13 to solve for the equation that is the same.

5x - 12 = 13

5x = 25

x = 5

Best of Luck!

6 0
3 years ago
Please help me on this will give you brainliest
elena-14-01-66 [18.8K]
7 1/4, 8.209, 8.22, 83/10
5 0
2 years ago
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