Which one of these is a rational number

Mathematics

2 answers:

alekssr [168]3 years ago

8 0

D is the ans. Square root of 49 equals to 7

Andrej [43]3 years ago

4 0

Answer: D. square root of 49

Step-by-step explanation: D. square root of 49=7

A rational number is either a whole number, or one that has repeating numbers/pattern behind the decimal, For example: 4.13333333333 is rational, because the numbers repeat, it goes on forever with a sequence. If it was irrational then it wouldn't repeat in a (pattern), after the decimal, For example: 4.920581765, it will just go on with random numbers all over the place.

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Why does 2^-1(6x-12) equal 3x-6?

MArishka [77]

2^-1 = 1/2 : . 1/2 (6x-12) =1/2* 6x - 1/2* 12 Basically ure dividing everything inside the brackets by two. Or multiplying by a half which is essentially the same thing.

7 0

3 years ago

T W hat is the value of 3ab+50-6 when a=-1 and D=3? - - ООО

rodikova [14]

Answer:

Step-by-step explanation:

i'm either really confused or there's a lot of weird typos in this

assuming there's just a lot of weird typos, this is how you would solve it:

1. plug in -1 for a and 3 for b

$3(-1)(3)+50-6$