Answer:
14 and 17
Step-by-step explanation:
x+y=41
y=2x-1
x+(2x-1)=41
3x-1=41
3x=42
x=14
y=2(14)-1=27
 
        
                    
             
        
        
        
Explanation:
1. It means that Nikoleta is longer and heavier than 10% of children her age.
2. We generally expect that a change from being in the 50th percentile to the 10th percentile signifies a condition that is interfering with normal growth. That is not usually considered desirable.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
A boat leaves the harbor entrance and travels 28 miles in the direction N 43° E.
Displacement in vector form 
= 28 cos43 i + 28sin43j 
= 20.47 i + 19.1 j 
The captain then turns the boat 90° and travels another 15 miles in the direction S 47° E
Displacement
= 15 cos47 i - 15 sin47 j 
= 10.22 i - 10.97 j 
Total displacement 
= 20.47 i + 19.1 j + 10.22 i - 10.97 j 
= 30.69 i - 8.13 j 
Magnitude of displacement 
= 31.75 miles
Angle with east direction 
TanФ = - 8.13 / 30.69
Ф = 15 degree  south of east. 
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Area of a rectangle is simply length times width
{ } * x    would be the area
} * x    would be the area
That can be simplified to

Which can be further simplified to

 
        
             
        
        
        
Answer:
There is significant evidence that treatment will create effect on the subject. Hence We reject H0
Step-by-step explanation:
H0 : μ = 37
H1 : μ ≠ 37
μ = 37 ; σ = 7 ; sample size, x = 51 ; sample size, n = 1
Decision region :
If P value < α ;
Reject H0 
Using the Z test statistic :
Zstatistic = (x - μ) ÷ (σ / √n)
Zstatistic = (51 - 37) ÷ (7 / 1)
Zstatistic = 14 ÷ 7
Zstatistic = 2
Obtaining p value from Zstatistic using the p value calculator ;
Zscore = 2 ; 2-tailed test, significance level = 0.05
P value = 0.0455
Zcritical at α = 0.05 for a 2 - tailed test = 1.96
0.0455 < 0.05
There is significant evidence that treatment will create effect on the subject. Hence We reject H0