Ijust completed 12 questions on a test the progress bar shows 20% is complete how many total questions are on the test?

Step-by-step explanation:

There are sixty questions on the test. 20 can be put into 100 5 times, meaning that you would have to multiply 12 by five to get the total number of questions on the test. 12x5 is 60.

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

b

step-by-step explanation: