Answer:
Step-by-step explanation:
According to question
α−d+α+α+d=−3ba
3α=−3ba
α=−ba
α2−dd+α2+αd+α2−d2=3a
3α2−d2=3ca
3b2a2−h2=3ca
d2=3b2a2−3ca=3b2−3aca2
α(α2−d2)=−da
−ba(b2a2−(3b2−3aca2))=−da
b(b2−3b2+3aca2)=d
−2b3+3ab=a2d
2b3−3abc+a2d=0
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Answer:
Step-by-step explanation:
Distribute the negative sign to 2m+6y.
Combine the like terms.
Answer:
a) Critical value = -1.285
b) We should reject null hypothesis that the mean equals 0.32
Step-by-step explanation:
Given that the statistic of z equals negative 2.40 is obtained when testing the claim that less than 0.32
i.e. for hypotheses
(one tailed test at 10% significance level)
Z critical value for 90% one tailed = -1.285
Since our test statistic is less than -1.285 we reject null hypothesis
a) Critical value = -1.285
b) We should reject null hypothesis that the mean equals 0.32
Find the solution set of x: x^2-7x= - 10.
Answer:
(x − 2)(x −5)
Step-by-step explanation:
x² - 7x = - 10
x² - 7x + 10 = 0
Find two numbers that when added together make −7 , and when multiplied make - 10.
The numbers − 2 and −5 fit the criteria.
x2− 7x + 10 = (x − 2)(x −5)
Answer:
- 2, 0 )
Step-by-step explanation:
Given the 2 equations
y = - 2x - 4 → (1)
y = 2x + 4 → (2)
Substitute y = - 2x - 4 into (2)
- 2x - 4 = 2x + 4 ( subtract 2x from both sides )
- 4x - 4 = 4 ( add 4 to both sides )
- 4x = 8 ( divide both sides by - 4 )
x = - 2
Substitute x = - 2 into (2) for corresponding value of y
y = 2(- 2) + 4 = - 4 + 4 = 0
Solution is (- 2, 0 )