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Hitman42 [59]
3 years ago
6

Plsss help will give a good amount of points, need done asap

Mathematics
2 answers:
Alex3 years ago
7 0
4+2i because you can’t have a negative square root
maksim [4K]3 years ago
7 0

Answer:

4 + 2i

Step-by-step explanation:

Since

\sqrt{ - 1}  = i

4 +  \sqrt{ - 4}  = 4 +   \sqrt{ - 1 \times  {2}^{2} }  \\  = 4 +  2i

You might be interested in
What are the x intercepts for (x-10) (x+1)=0
olchik [2.2K]

Answer:

( 10 , 0 ) , ( − 1 , 0 )

Step-by-step explanation:

becasue

7 0
3 years ago
What is the volume of the sphere given below? if necessary, round your answer to two decimal places.
Marrrta [24]
The formula for volume of a sphere is V=(4pi*r^3)/3.
Plugging in 12 for r we get
V=(4pi*(12)^3)/3
V=(4pi*1728)/3
V=(6912pi)/3
V=2304pi
Round to 2 decimal places: 7238.23
Final Answer:
7238.23 cubic units.
Hope I helped :)
6 0
2 years ago
Find the geometric mean of 2 and 3
Sav [38]
The first step in solving this problem is taking 2 and 3 and multiplying them (2 * 3 = 6) .
Now, for the second step, we will cube it. Since there are 2 numbers, we are going to use the 2nd root (2sqrt(6)) This will give us: 4.89897948557 or 5 if you would round it. This would be the Geometric Mean.
7 0
3 years ago
Solve by using Pythagorean Theorem, a= 5, b= x-1, and c=x
charle [14.2K]

The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

Step-by-step explanation:

The given is,

             a = 5

             b = x - 1

             c = x

Step:1

      Pythagorean theorem is,

              a^{2} + b^{2} = c^{2}................................(1)

      (  It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides )

      From the given values the equation (1) becomes,

                       5^{2} + (x-1) ^{2} = x^{2}

                             ( (a-b)^{2} = a^{2}  + b^{2} -2ab )

               25 + ( x^{2} + 1 - 2x ) = x^{2}

                           25 + 1 -2x = 0               ( ∵ Eliminate x^{2} in both sides)

                                     26 = 2x

                                       x = 13

Step:2

        From the values of x,

                   a = 5

                    b = ( 13 - 1 ) = 12

                   c = 13

Result:

            The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

3 0
3 years ago
A line passes through the points (-4,n) and (2,4n) and has the slope of 6. What’s the value of n?
Wittaler [7]

Not sure about this one sorry bud

4 0
2 years ago
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