Answer : 23
-5 * -4 = 20 ( when you multiply 2 negatives the answer is always positive )
20 + 3 = 23
Answer:
1 : 12 : 4
Step-by-step explanation:
Let A, G, C represent the ages of Alex, George, and Carl, respectively. We are told that ...
A = G +12
C = 3A . . . . . . . we read this as "3 times as old"; not "3 times older"
A + G + C = 68
Substituting for G and C, we have ...
A + (A -12) +(3A) = 68
5A = 80 . . . . . add 12
A = 16 . . . . . . . divide by 5
The other ages are then ...
G = A-12 = 16 -12 = 4
C = 3A = 3·16 = 48
The ratios are ...
G : C : A = 4 : 48 : 16
G : C : A = 1 : 12 : 4
Answer:
36
Step-by-step explanation:
X equals 12, substitute X for 12
3(12)=36
Answer is A
Just make sure you do know how to do them :)
Lol I had this kind of stuff, but now I’m in 7th)) Rationals are numbers that can be made into fractions, but almost all of the others can be made into it too, except for irrational. Sorry if I didn’t make sense