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Vladimir79 [104]
3 years ago
11

IF YOU DECIDE TO HELP ILY!!

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

n equals 4

Step-by-step explanation:

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The sum of a rational number and an even integer is rational. A) Always True B) Sometimes True C) Usually True D) Never True
SOVA2 [1]
I think that the sum will always be a rational number
let's prove that


<span>any rational number can be represented as a/b where a and b are integers and b≠0

</span>and an integer is the counting numbers plus their negatives and 0
so like -4,-3,-2,-1,0,1,2,3,4....

<span>so, 2 rational numbers can be represented as

</span>a/b and c/d (where a,b,c,d are all integers and b≠0 and d≠0)

their sum is
a/b+c/d=
ad/bd+bc/bd=
(ad+bc)/bd

1. the numerator and denominator will be integers
2. that the denominator does not equal 0

alright
1.
we started with that they are all integers
ab+bc=?
if we multiply any 2 integers, we get an integer
<span>like 3*4=12 or -3*4=-12 or -3*-4=12, etc.
</span>even 0*4=0, that's an integer
the sum of any 2 integers is an integer
like 4+3=7, 3+(-4)=-1, 3+0=3, etc.
so we have established that the numerator is an integer

now the denominator
that is just a product of 2 integers so it is an integer


<span>2. we originally defined that b≠0 and d≠0 so we're good

</span>therefore, the sum of any 2 rational numbers will always be a rational number <span>is the correct answer.</span>
6 0
3 years ago
Evaluate (4/25) 1/2<br><br> A 4/5<br><br> B 4/25<br><br> C2/5<br><br> D2/25
Phantasy [73]
(4/25) 1/2 = 4/50 = 2/25

D. 2/25
8 0
3 years ago
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(HELP ASAP!!) An exterior angle of a triangle is 152°. If the non-adjacent angles are congruent, then what are the measures of a
tresset_1 [31]

Answer:

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Step-by-step explanation:

The two remote interior angles sum to 152°. Since they are congruent, their measures are 152°/2 = 76°. The adjacent interior angle is the supplement of 152°, so is 180°-152° = 28°.

The interior angles are 28°, 76°, 76°.  . . . .  matches choice C

4 0
3 years ago
Felix says that 2,000 + 400 + 70 is another way to write 2,407. What is Felix’s error
Umnica [9.8K]

2,000 + 400 + 70 would equal 2,470.

The correct way to write it would be 2,000 + 400 + 7

6 0
3 years ago
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24% of what is 6?
IrinaK [193]

Answer:

25

Step-by-step explanation:

Percentage Calculator: 6 is what percent of 24? = 25.

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2 years ago
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