Which statement is true about the difference 2 square root of 7 − square root of 28 ?

Group of answer choices

A) It is rational and equal to −2.

B) It is rational and equal to 0.

C) It is irrational and equal to −2 square root of 7 .

D) It is irrational and equal to square root of 7 .

I'll go slow:

B  rational and equal to 0.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%