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lubasha [3.4K]
3 years ago
15

X + y is rational, must x and y each be rational

Mathematics
2 answers:
iren [92.7K]3 years ago
7 0
The rationals are closed under addition, so if x,y are rational then x+y must be rational since Q is a group under addition.
timofeeve [1]3 years ago
3 0
Yes because x and y must be integers
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What is the constant in the algebraic expression to represent the patter below??
Hitman42 [59]

Answer:

The constant in the algebraic expression to represent the pattern below is 4.

Step-by-step explanation:

Imortant Tip:

  • An Arithmetic sequence has a constant difference 'd' which can be determined by computing the differences of all the adjacent terms

Given the pattern

15,11,7,3,-1,...

computing the differences of all the adjacent terms

11-15=-4,\:\quad \:7-11=-4,\:\quad \:3-7=-4,\:\quad \:-1-3=-4

The difference between all the adjacent terms of the pattern is the same which is

d=-4

Hence, the given pattern represents the Arithmetic sequence.

Therefore, the constant in the algebraic expression to represent the pattern below is 4.

8 0
3 years ago
The figure below shows ADC and BEC.Complete the two-column proof.BE AC and AD CBCB ≅ CAProve: ADC ≅ BEC
Firdavs [7]

Isn’t ADC = CAPROVE?

6 0
3 years ago
Let f(x) = 6x - 5 and g(x) = 8x, for x E R.<br> Write down g(2).<br><br> Find (fog)(x)
ziro4ka [17]

Answer:

48x -5

Step-by-step explanation:

(fog)(x) = f(g(x)) = 6(8x)-5 =48-5

5 0
3 years ago
F(x) = 2/3 x -5 what is the value f(6)?
katovenus [111]
F(6)=2/3(6)-5
f(6)=4-5
f(6)=-1

Final answer: f(6)= -1
5 0
3 years ago
Round 83,461 to the nearest thousand.
ch4aika [34]

Answer:

See below.

Step-by-step explanation:

83,461

  /\

This is the thousand place.

5 and above is rounded up, 4 and below is rounded down.

83,000 is the answer.

-hope it helps

4 0
2 years ago
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