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gogolik [260]
3 years ago
9

Which of the following is equivalent to the expression below?

Mathematics
1 answer:
vladimir1956 [14]3 years ago
5 0

Answer:

2i√5

Step-by-step explanation:

√-20 = √-1 × √20

√-1 = i

√20 = 2√5

i × 2√5 = 2i√5

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This is pretty easy for yall
Naily [24]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
The diameter of the base of the cone measures 8 units. The height measures 6 units. What is the volume of the cone?
Maslowich
V = \pir^2h/3

V = 3.14 x 4^2 x 6/3       (remember r is 1/2 of the diameter)
V = 3.14 x 16 x 2
V = 100.5
3 0
3 years ago
Read 2 more answers
(08.02)
alukav5142 [94]

Answer:

the median is 80.5

Step-by-step explanation:

first we put them in order

75,76,77,79,80,81,85,86,90,91

the median is the middle number...however, in cases where there are an even number of numbers, ur gonna have 2 middle numbers....so u take the average of those 2 numbers...basically, u add them and divide by 2.

So we have 2 numbers in the middle.....we add them and divide by 2 to get the median.

(80 + 81) / 2 = 161/2 = 80.5 <== the median

8 0
3 years ago
The hypotenuse of a right triangle measures 58 cm and one of its legs measures 42 cm. What is the length of the missing leg? 10
Nutka1998 [239]
If the hypotenuse is 58cm, and one of the others legs is 42cm the answer would be 40cm

Explanation:

Here you have to use the formula

{a}^{2} + {b}^{2} = {c}^{2}
Then you have to pose the formula in terms of one of the legs, so:

{a}^{2} = {c}^{2} - {b}^{2}
a = \sqrt{ {c}^{2} - {b}^{2}}
So when you change the letter for numbers you have that:

a = \sqrt{ {58}^{2} - {42}^{2} }

a=40
5 0
3 years ago
Is it always true that multiplying a negative factor by a positive factor results in a negative? If yes, provide an example. If
Fed [463]

Answer:

yes because -3x4 would be negative 3 four times, reseulting in a negative number

Step-by-step explanation:

hope this helped

3 0
3 years ago
Read 2 more answers
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