Consider this equation: 0B = 21. Is the equation always false, no matter what value you give the variable? Justify your answer.

because the variable is being multiplied by 0.

Step-by-step explanation:

the B in the equation is just a place holder for any number you can think of.

the problem with that is that any number times 0 will always give you 0, so the equation will look like this now

0 = 21

this equation is false because 0 is not equal to 21.

21 is equal to 21.

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1