Answer:
2y-8
Step-by-step explanation:
-y-5+y+2(2y-y)-3
Do the parenthesis first
-y-5+y+2(y)-3
Multiply
-y-5+y+2y-3
Combine like terms
2y-8
Answer:
25% or 30L
Step-by-step explanation:
100% is 120L, we know 75% is acid, we need the other 25% to make the 100%. 25% of 120 is 30, so 30 liters is pure acid
Answer:
x = 0
Step-by-step explanation:
add 23 on both side and x equals zero
substitute x for 0, and the equation is still correct
Your answer is d Its on the fourth quadrant! that Is really easy!
Answer:
6.25%
Step-by-step explanation:
To know the final probability that this has happened, we must multiply the probability of each event, they tell us that the probability that it is a girl is 1/2 and this happened 4 times, therefore:
(1/2) ^ 4 = 0.0625
that is, the probability that 4 girls are born is 6.25%
an unusual probability is considered when it is less than 5%, therefore, although it approaches this figure, it is not unusual
