2 1/2x - 3/4(2x+5)=3/8 3/8=0.375
2.5x - 0.75(2x+5)=0.375
2.5x - 1.5x - 3.75 = 0.373
2.5x-1.5x=4.12
1x=4.12
X= 4 1/8
Answer
given,
mean = 12 Kg
standard deviation = 0.5 Kg
assume the observed statistic is = 11.1
now, 
assuming the number of sample = 4
n = 4
Hypothesis test:
H₀ : μ≥ 12
Ha : μ < 12
now,
significant level α = 0.05


z* = -3.60
Test statistics, Z* = -3.60
P-value
P(Z<-3.60) = 0.002 (from z- table)
P- value = 0.002
now,
reject the value of H₀ when P-value < α
0.002 < 0.05
since, it is less P-value < α , we have to reject the null hypothesis
Answer:
640 students
Step-by-step explanation:
544 divided by 85%= 640
Answer:
In short, Your Answer would be either 1 or 7
Step-by-step explanation:
|4x + 12| = 16
As it is in modulus function, it could be either +ve or -ve
4x+12 = 16 OR 4x - 12 = 16
4x = 16-12 OR 4x = 16 + 12
4x = 4 OR 4x = 28
x = 4/4 OR x = 28/4
Answer:

Step-by-step explanation:
We are given that Chantal drives at a constant speed of 55 miles per hour.
If, d represents the total distance in miles, and
h represents number of hours, the following equation can be used to express the given situation:

For every hour, a distance of 55 miles is covered.
Thus, if h = 1, 
If h = 2,
.
Therefore,
, is an ideal equation that represents the situation given in the question above.