The equation would be 4x+5y=6.33 and 3x+3y=4.11
so from their you would do the calculations and get 0.52 and 0.85
To make sure the caluclations aare right you just hae to put in the numbers for the x and y
4(0.52)+5(0.85)=6.33
So 1 donutis $).52
1 large coffee is $0.85
Answer:
5250
Step-by-step explanation:
a. 7/8 of 60,00
a 
The coefficent is 5, since it’s placed before the variable.
Answer:
x = 7
Step-by-step explanation:
Based on the angle bisector theorem, we would have the following equation:
21/(3x - 12) = 14/6
21/(3x - 12) = 7/3
Cross multiply
(3x - 12)*7 = 3*21
21x - 84 = 63
21x - 84 + 84 = 63 + 84
21x = 147
21x/21 = 147/21
x = 7
Answer:
0.41
Step-by-step explanation:
Given the data:
Subject Hours of Sleep
Subject 1 6
Subject 2 6.5
Subject 3 6
Subject 4 7.5
Subject 5 5
The standard error of the sample mean :(S. E) is given by standard deviation / square root of sample size.
To calculate the standard deviation :
Using the formula :
Sample size = n = 5
Sqrt(Σ(X - mean)^2 / n - 1)
This can be obtained faster using a calculator :
Hence, using calculator the standard deviation of the sample is 0.90829
Hence,
Standard Error = 0.90829 / sqrt(5)
Standard Error = 0.90829 / 2.2360679
Standard Error = 0.4061996
