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NikAS [45]
3 years ago
10

Explain why the square root of -4 is not a real number, but cube root of -8 is

Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0
Because -2 times -2 is 4 and 2 x 2 is 4 as well. So you cant have -4. 
But if you have cube root of -8, you can do -2 as -2 x -2 gives you 4, if you x this by -2 you get -8
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Answers
Katen [24]

Answer:

D) y greater than equal to -1

Step-by-step explanation:

As in the graph, the line passes through y = -1 and the shaded art is above the line so all the values greater than y = -1 match the graph.

Mathematically:

y  ≥ -1

i hope it will help you!

8 0
3 years ago
What is the result when the number 92 is decreased by 50%?
Sliva [168]

Answer:

46

Step-by-step explanation:

50%=0.5

0.5*92=46

4 0
3 years ago
Janet was asked to use the distributive property. She noticed she was marked wrong but does not know what step she did incorrect
kenny6666 [7]

Answer:

You distribute the 2 to all numbers in the 3rd step

Step-by-step explanation:

DISTRIBUTION: you must distribute the outside number to all the inside numbers in the parentheses.

7 0
3 years ago
What is the gcf of 16 24 and 36
Nutka1998 [239]

Answer:

4

Step-by-step explanation:

Calculate Greatest Common Factor for :

   16, 24 and 36

Factorize of the above numbers :

   16 = 2^{4}  

   24 = 2^{3} • 3  

   36 = 2^{2} • 3^{2}  

Build a prime factors table

   Number of times each prime factor

   appears in the factorization of :

Prime  Factor     Number  16   Number  24   Number  36    G.C.F   (min)  

2 4 3 2 2

3 0 1 2 0

GCF = 2²

Greatest Common Factor is :

     4

Hope this helps :)

7 0
3 years ago
Boxes of cereal normally cost £2.89 each, but a supermarket has a special offer: Boxes of Cereal 3 for the price of 2
Agata [3.3K]

Answer:

9 boxes

Step-by-step explanation:

Boxes of Cereal 3 for the price of 2, the the price of the 3 boxes of cereals must be : 2 × £2.89 = £5.78

Boxes Megan can buy for the offer = £20 ÷ £5.78  = 3.46 (to 3 s.f.)≈ 3

3 × 3 =9 packs

But they actually only cost : 3 × £5.78  = £17.34

Therefore after buying the offer Megan has £20 - £17.34 = £ 2.66 left, which is not enough to buy a single pack, so the answer is 9.

5 0
3 years ago
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