Answer:
3
Step-by-step explanation:
Note the general factorisation of a difference of 2 squares is
a² - b² = (a + b)(a + b)
Given
(- 5x - 3)(- 5x + ?)
Then ? = 3 so that the complete factors are
(- 5x - 3)(- 5x + 3)
Complete Question
The complete question is shown on the first uploaded image
Answer:
The null hypothesis is rejected this means that 
The 95% confidence interval is
Step-by-step explanation:
From the question we are told that
The standard deviation is s= 0.0001
The sample size is n = 25
The sample mean is 
The population mean is 
The null hypothesis is 
The alternative hypothesis is 
The test statistics is mathematically represented as


So the p-value from the z-table is mathematically represented as


seeing that
we reject the null hypothesis
The critical value of
obtained from the normal distribution table is

The margin of error is mathematically represented as

=> 
=> 
The 95% confidence level is mathematically represented as

=> 
=>
Answer:
The Answer is 49 - 43i Hope this helps :)
Step-by-step explanation:
If you want i can explain it.
Divide actual distance by the distance on the map:
75 km / 1.5 cm = 50
The scale would be 1 cm = 50 km