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ycow [4]
3 years ago
9

Pls help !!!!!! :)))))))

Mathematics
2 answers:
rusak2 [61]3 years ago
6 0

Answer:

(2\sqrt{5}) (3\sqrt{5}) = 30

Step-by-step explanation:

(2\sqrt{5})(3\sqrt{5})  = \\= (2)(3)(\sqrt{5})(\sqrt{5}) = \\= (6)(5)\\= 30

Genrish500 [490]3 years ago
5 0

Answer:

30

Step-by-step explanation:

its basically 2x5x3 so that would equal 30

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Solve the system by substitution.
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Answer:

1st, keep value of x in 1st equation

Step-by-step explanation:

-6(-2y-1)+2y=48

12y+6+2y=48

14y=48-6

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y=3

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x= - 2y-1

x= - 2×3-1

x= - 6-1

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Read 2 more answers
Determine which of these sets are subsets of which other of these sets. Check ALL correct answers below.
noname [10]

The Set C is the subset of A and D.

According to the statement

we have given that the three sets which are A = {2, 4, 6}, B = {2, 6}, C = {4, 6}, and D = {4, 6, 8}.

And we have to find that the subsets of these sets.

So,

For a set S to be a subset of a set T, all of the elements of the set S need to be contained in the set T. Firstly, all of the sets are their own subsets, that is, A⊆A,B⊆B,C⊆C,D⊆D.

It follows that B⊂A because of 2∈A and 6∈A. Since 2 is not belongs to C and D. that's why B is not a subset of C and B is not a subset of D.

Taking into account that 4∈A and 6∈A, we conclude that C⊂A. By analogy, since 4∈D and 6∈D, we conclude that C⊂D.

Since |A|>|B|∣A∣>∣B∣ and |A|>|C|,∣A∣>∣C∣, we conclude that A is not a subset of B and A is not a subset of C.

Taking into account that |D|>|B|∣D∣>∣B∣ and |D|>|C|,∣D∣>∣C∣, we conclude that D is not a subset of B and D is not a subset of C. Since,2 not belongs to D that's why A is not a subset of D.

Since 8 not belongs to A, D is not a subset of A.

Overall, The Set C is the subset of A and D.

Learn more about Sets here brainly.com/question/2166579

Disclaimer: This question was incomplete. Please find the full content below.

Question:

Suppose that A = {2, 4, 6}, B = {2, 6}, C = {4, 6}, and D = {4, 6, 8}. Determine which of these sets are subsets of which other of these sets.

#SPJ4

8 0
2 years ago
To determine your final grade, why might you prefer your teacher use the mean of your test scores to determine your final grade
ICE Princess25 [194]

Answer:

When determing your grade using mean, it will be more accurate to give your final grade rather then median. If you had one F for example, if that ends up being in the middle it could be your final grade

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3 years ago
In a survey, a group of students were asked to name their favorite subject. There were 20 students who chose "other" subjects. H
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Other = 20 students which equals 25 percent, because math and english sum to 75 percent. if 25* 4 is 100, then you can do 20*4 to get 80, which is how many students participated
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