Answer:
No, 6 is not a solution to the equation x2-4=5x
Step-by-step explanation:
6(2)-4=5(6)
12-4=30
8=30
The question is basically asking if you replace x with 6, will the equation equal each other on both sides, for example 6=6 or 3.5=3 1/2. In this case the equation gives us 8=30 which means 6 would not be a solution since both sides aren't equal to one another, 30 is bigger than 8.
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
SST = 1800
SSR = 1512.376
SSE = 287.624
b
coefficient of determination is 
What this is telling us is that 84.02% variation in dependent variable y can be fully explained by variation in the independent variable x
c
The correlation coefficient is 
Step-by-step explanation:
The table shown the calculated mean is shown on the second uploaded image
Let first define some term
SST (sum of squares total) : This is the difference between the noted dependent variable and the mean of this noted dependent variable
SSR(sum of squared residuals) : this can defined as a predicted shift from the actual observed values of the data
SSE (sum of squared estimate of errors): this can be defined as the sum of the square difference between the observed value and its mean
From the table




The coefficient of determination is mathematically represented as




The correlation coefficient is mathematically represented as

Substituting values


this value is + because the value of the coefficient of x in estimated regression equation(
) is positive
Yes it is correct .
45 plus 90 =135
which means that 135 - 45=90
Answer:
The part AP to the whole AB ratio is 1:5
The part BP to the whole BA ratio is 4:5
Step-by-step explanation:
The given information are;
The number of parts in AB = 5 parts
The number of parts in AP = 1 part
The ratio of the part AP to the whole part AB is given as follows;
The ratio of AP to AP = The ratio of 1 part (AP) to 5 parts (AB)
Therefore;
The ratio of AP to AB = 1:5
The part AP to the whole AB ratio = 1:5, similarly, we have;
The ratio of BP to BA = The ratio of 5 part (BP) to 5 parts (BA)
Therefore;
The ratio of BP to BA = 4:5
The part BP to the whole BA ratio = 4:5.
Answer:
Large Box = 15.25KG
Small Box = 13.25KG
Step-by-step explanation:
L = Large Box
S = Small Box
two large boxes and six small boxes has a total weight of 110 kg
2L + 6S = 110
five large boxes and three small boxes has a total weight of 116 kg
5L + 3S = 116
Make one of the coefficents [numbers] the same, in this case S.
2L + 6S = 110
10L + 6S = 232
Subtract the equations.
(10L + 6S = 232) - (2L + 6S = 110)
(10L - 2L) + (6S - 6S) = 232 - 110
8L = 122
L = 15.25
Substitute back into one of the equations to find S
2L + 6S = 110
2(15.25) + 6S = 110
30.5 + 6S = 110
6S = 110 - 30.5
6S = 79.5
S = 13.25
Substitute into the other equation
10L + 6S = 232
10(15.25) + 6(13.25) = 232