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Mandarinka [93]
3 years ago
8

Answer, please. I need help.

Mathematics
2 answers:
kumpel [21]3 years ago
4 0

Answer:

2i, if you don't understand any of the steps let me know, I'd be happy to explain.

Step-by-step explanation:

\sqrt{-x} =\sqrt{-1*x} ,\sqrt{xy}=\sqrt{x} \sqrt{y},   \sqrt{-1}=i

so in order -4 = -1 * 4 so then \sqrt{-1*4}=\sqrt{-1} \sqrt{4} then just solve each

qaws [65]3 years ago
4 0

Answer:

undefined

Step-by-step explanation:

because you can be negative in square root.

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1. In a parallelogram ABCD, AD=12cm. if the altitudes corresponding
olganol [36]

Answer:

10.5 cm

Step-by-step explanation:

area of parallelogram = Bh

12 x 7 = AB x 8

AB = 12x7 / 8 = 21/2 = 10.5

6 0
2 years ago
Two angles o a triangle each measure 70 degrees what is the measurement of the third angle in degrees
hjlf
The 3 angles of a triangle, when added, = 180 degrees

so if 2 of them are 70.....70 + 70 = 140
then the 3rd will be 180 - 140 = 40 degrees <==
7 0
3 years ago
Hola necesito ayuda con esta pregunta:
Svetradugi [14.3K]
Okay it’s the right answer
4 0
3 years ago
Ratio equivalents to 1:2
nata0808 [166]
2:4  3:6  4:8

Any ratio equals 1:2 as long as you can divide the first number by itself to get 1 and the second number with the 1st number.
Example
2:4
Divide the first number by 2 and you get 1 
Divide the second number by 2 and you get 2
So the ratio equals 1:2


Please make me brainliest
3 0
3 years ago
Read 2 more answers
Two cones have a radius of 2 cm. The height of one cone is 8 cm. The other cone is 1/4 of that height. Which of these statements
marta [7]
The wrong statement: The volume or the smaller cone cannot be determined because its height is unknown.

We already know that the larger cone has a height of 8 cm and that the smaller cone is just 1/4 of 8 cm.

8×1/4 = 2 cm.

You can still find its volume by using the formula 1/3πr^2.
8 0
3 years ago
Read 2 more answers
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