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3 years ago

Is the square root of negative 4 rational or irrational?

1 answer:

3 0

The square root of -4 is the same thing as the square root of -1 times the square root of 4. The square root of 4 is 2, but the square root is an imaginary number, i. Since it is an imaginary number, it is indeterminate whether it is a rational or irrational (given current number theory) so the square root of negative 4 is neither rational nor irrational. It is imaginary.

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Help PLEASE im stucckkkk!!!

noname [10]

Answer:

Surface area of the cube = $150\ cm^2$

Step-by-step explanation:

Given shape in figure 1:

Cube with edge length = 5 cm

To find the surface area of the cube.

Solution:

The surface area of a cube is given by the formula:

$Surface\ Area = 6a^2$

where $a$ represents the length of the edges of the cube.

For the given cube $a=5\ cm$

Plugging $a=5\ cm$ in the formula to find the surface area of the cube.

$Surface\ Area = 6(5)^2$

∴ $Surface\ Area = 6\times 25 = 150\ cm^2$

8 0

3 years ago

Please help and thank you

Pani-rosa [81]

Answer:

I think its 368.28 cubic inches

Step-by-step explanation:

3 0

3 years ago

0.23x + 1.47 = 0.37x – 1.05

Artyom0805 [142]

0.23x+1.47=0.37x-1.05

-1.47 -1.47

0.23x=0.37x-2.52

-0.37 -0.37

-0.14x=-2.52

/-0.14 /-0.14

x=18

Hope it helps!

4 0

3 years ago

Please help is this answer are right, number 1 and question #2

VladimirAG [237]

Yes. They are both right.

7 0

3 years ago

Solve for y y-(-5)=-7

romanna [79]

Y - (-5) = -7
---------------------------
Simplify
y + 5 = -7
-------------------------------------
Subtract 5 from each side
y + 5 - 5 = -7 - 5
y = -12
--------------------------------------------
y = -12 is your answer

7 0

3 years ago

Read 2 more answers