Which of the following sets is closed under multiplication?

Mathematics

2 answers:

andrezito [222]2 years ago

7 0

B. {1,2} because they are both whole numbers 0 is not one.

(Proof: Whole Numbers: This set is closed only under addition and multiplication. Integers: This set is closed only under addition, subtraction, and multiplication. Rational Numbers: This set is closed under addition, subtraction, multiplication, and division (with the exception of division by 0)"

velikii [3]2 years ago

7 0

Answer:

(o,1)

Step-by-step explanation:

i got my results back and it said that this was the correct answer

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Nuetrik [128]

Answer:

B and D

(The ratio of cats to birds is greater than the ratio of ferrets to birds; The ratio of ferrets to cats is less than the ratio of dogs to cats)

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8 0

2 years ago

Point m is the midpoint of ab¯¯¯¯¯ . am=2x+9, and ab=8x−50. what is the length of am¯¯¯¯¯¯ ?

iogann1982 [59]

Since m is the midpoint of ab, then the following relationship is fulfilled:
$am = \frac{ab}{2}$
Therefore, substituting values we have:
$2x+9 = \frac{8x-50}{2}$
From here, we clear the value of x.
We have then:
$2x+9 = 4x-25$
$9+25 = 4x-2x$
$34 = 2x$
$x = \frac{34}{2}$
$x = 17$
Then, the value of am, is given by substituting x in the expression:
$am=2x+9$
Substituting we have:
$am=2(17)+9$
$am=34+9$
$am=43$
Answer:
the length of am is:
$am=43$

7 0

3 years ago

PLEASE HELP WILL FOLLOW,5STAR AND BRAINIEST IF CORRECT

tensa zangetsu [6.8K]

Use trigonometry here.

sinx = opposite side/ Hypotenuse

so, sinx = 4/5 = 0.8

x= sin^-1(0.8) which is 53.13

Hope it helps

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3 years ago

Soooo.... when does shrek 5 come out