On #29 x = 12 and <apb = 90° and <dcb = 40° and on #30 all I dont even understand, sorry
Solid circle over 3 line going left
Answer:
Step-by-step explanation 10 + 2.50d = 850
David starts with $10 and each day he earns $2.50. The d represents a variable and can be any number.
To find d you must solve the equation.
10 + 2.50d = 850
2.50d = 840 (subtract 10 from 850)
d = 336 (divide 840 by 2.50)
It will take David 336 days to save $850.
Answer:
The test statistic is 
Step-by-step explanation:
From the question we are told that
The population mean is 
The sample size is 
The sample mean is 
The standard deviation is 
Generally the test statistics is mathematically represented as
substituting values
Answer:
a) Distance formula
Step-by-step explanation:
Generally, if you want to show lengths are the same, it is useful to use a formula for length: the distance formula.
