4 hours = 4×60
= 240 minutes
240÷12
= 20 songs
the correct answer is 20 songs
Answer:
In order of least to greatest- 99%, -9.9, sqaure root of 80, 1/9, sqaure root of 9, 19%
Step-by-step explanation:
Answer:
X=5 and a quarter
Step-by-step explanation:
21 + 21 = 4x + 4x
42 = 8x
8x = 42
x = 42/8
= 5 1/4
Answer: I think C is the answer
Step-by-step explanation:
Answer:
susan´s age=4
jack´s age=31
Step-by-step explanation:
Hello!
To solve the first part of this problem we must propose a system of equations of 2 x2, that is to say two equations with two unknowns where
J = is the age of jack
S = susan's age
with the above the following two equations are inferred
ecuation 1
J=S+27
ecuation 2
(J+5)=4(s+5)
J=4S+20-5
J=4S+15
now to solve we subtract equation 1 from equation 2 as follows
J=4S + 15
-
J=S + 27
___________
0=4S-S+15-27
0=3S-12

susan is 4 years old
now we use the ecuation number 1
J=S+27
J=4+27=31
jack is 31 years old
b.
Finally, to verify that the answer is correct, we replace the ages of jack and susan in equation 2.
(J+5)=4(s+5)
(31+5)=4(4+5)
36=36
as the equation is the same means that our answer is correct