Answer:
y= -2x+15
Step-by-step explanation:
Answer: Tom saves $21
Step-by-step explanation: The monthly earning has been given as $30. The spendings are expressed as fractions of the total earnings. The expenses are as follows;
Lunch = one tenth of the earnings
Lunch = 1/10 x 30
Lunch = 30/10
Lunch = 3
Also he spends the following on music
Music = one fifth of the earnings
Music = 1/5 x 30
Music = 30/5
Music = 6
So he spends a total of 3 plus 6 which equals 9 dollars out of his earnings. His savings becomes
Savings = 30 - 9
Savings = 21
Therefore his savings is $21
Answer:
Test statistic = - 3.354
We reject H0 and conclude that the growth rate of the new shrub is less than 3cm per week.
Step-by-step explanation:
H0 : μ = 3
H1 : μ < 3
The test statistic = (xbar - μ) / (s/ √n)
Xbar = 1.50
μ = 3
s = 3
n = 45
Test statistic = (1.5 - 3) / (3/ √45)
Test statistic = - 1.5 / 0.4472135
Test statistic = - 3.354
Pvalue, using the Pvalue from Z score calculator :
Pvalue = 0.00039826
α = 0.05
Pvalue < α ; We reject H0 and conclude that the growth rate of the new shrub is less than 3cm per week.
Answer:
3
Step-by-step explanation:
Answer:
7. 30%
8. 70%
Step-by-step explanation:
not sure if its correct too
