Answer: Min = (0.5, −6.25)
Step-by-step explanation: Standard form:
x2 − x − 6 = 0
Factorization:
(x + 2)(x − 3) = 0
Solutions based on factorization:
x + 2 = 0   ⇒   x1 = −2
x − 3 = 0   ⇒   x2 = 3
 
        
             
        
        
        
Answer:
$191.70
Step-by-step explanation:
total amount spent = cost of medicine + cost of tax + cost of shipping
cost of tax = 0.05 x $180 = $9
cost of shipping 0.015 x $180 = $2.70 
total cost = $180 + $9 + 2.70 = $191.70
 
        
             
        
        
        
Students on the minibus = 8
students that are boys = 5
fraction of the student that are boys = ?
we can write fraction as the numerator and denominator so here the fraction of boys students is =  5/8
this fraction means and shows that there are 5 students are boys from 8 students.
        
             
        
        
        
There is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.
Given sample size of patients take aspirin 11037, sample size of patients who have assigned placebo group be 11034. 104 doctors who take aspirin had a heart attack, 189 doctors had placebo had heart attacks.
First we have to form hypothesis.


We have to find the respective probabilities.
 =104/11037
=104/11037
=0.0094
 =189/11034
=189/11034
=0.0171
Now their respective margin of errors.
 =
=
=0.0009
 =
=
=0.0011
Hence the distribution of the differences,they are given by:
p=
=0.0094-0.0171
=-0.0077
S=
=
=0.00305
z=(p -f)/S (In which f=0 is the value tested at the null hypothesis)
=(-0.0077-0)/0.00305
=-2.52
p value will be 0.005.
p value of 0.05 significance level.
z=1.96.
1.96>0.005
So we will reject the null hypothesis which means it cannot reduce the whole chance of becomming a heart attack.
Hence there is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.
Learn more about t test at brainly.com/question/6589776
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Answer:
A
Step-by-step explanation: Just took test