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Dafna1 [17]
3 years ago
11

What is the square root of -1?

Mathematics
2 answers:
pickupchik [31]3 years ago
6 0

Answer:

Unit Imaginary Number or i

mojhsa [17]3 years ago
4 0

Answer:

Step-by-step explanatidk

ion:

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PLSS HELPPPP<br> Find the value of the expression a + b, when a= -2 and b= 5
Ulleksa [173]

Answer:

When a=-2, and b=5, a+b = -2+5, which is equal to 3.

Let me know if this helps!

7 0
3 years ago
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The perimeter of a rectangular room is 24 meters.The width of the room is 4 meters. Find the length of the room.
Basile [38]

Answer:

20 metes

Step-by-step explanation:

:)

7 0
3 years ago
What is the slop and y-intercept of this line y = x - 5
raketka [301]

Answer:

The slope is  

1

y -intercept is  

− 5

.

Step-by-step explanation:

7 0
3 years ago
A,B and C are the vertices of one triangle.
dsp73

Answer:


Step-by-step explanation:

Given: The triangle with coordinate A(4,6), B(2,-2) and C(-2,-4). D is the mid point of AB and E is the mid point of AC.

To prove: DE is parallel to BC.

Construction: Join DE.

Proof: If we prove the basic proportionality theorem that is \frac{AD}{DB}=\frac{AE}{EC}, then it proves that DE is parallel to BC.

Now, Mid Point D has coordinates=(\frac{4+2}{2},\frac{6-2}{2})=(3,2) and Mid Point E has coordinates=(\frac{4-2}{2},\frac{6-4}{2})=(1,1)

Now, AD= \sqrt{(4-3)^{2}+(6-2)^{2}}=\sqrt{17}

DB=\sqrt{(3-2)^{2}+(2+2)^{2}}=\sqrt{17}

AE=\sqrt{(4-1)^{2}+(6-1)^{2}}=\sqrt{34}

EC=\sqrt{(1+2)^{2}+(1+4)^{2}}=\sqrt{34}

Now, \frac{AD}{DB}=\frac{AE}{EC}

=\frac{\sqrt{17}}{\sqrt{17}}=\frac{\sqrt{34}}{\sqrt{34}}=\frac{1}{1}

Hence, \frac{AD}{DB}=\frac{AE}{EC}

Thus, By basic proportionality theorem, DE is parallel to BC.

4 0
3 years ago
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Five times the sum of a number and 3 is the same as 3 multiplied by 1 less than twice the number
olga nikolaevna [1]
5(3+n)=3(2n-1)
15+5n=6n-3
18=n
7 0
3 years ago
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