Answer:
x = - , x = 3
Step-by-step explanation:
To find the zeros let p(x) = 0 , that is
2x² - 3x - 9 = 0
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 2 × - 9 = - 18 and sum = - 3
The factors are - 6 and + 3
Use these factors to split the x- term
2x² - 6x + 3x - 9 = 0 ( factor the first/second and third/fourth terms)
2x(x - 3) + 3(x - 3) = 0 ← factor out (x - 3) from each term
(x - 3)(2x + 3) = 0
Equate each factor to zero and solve for x
2x + 3 = 0 ⇒ 2x = - 3 ⇒ x = -
x - 3 = 0 ⇒ x = 3
I think the answer is A or D
The T-test or T statistical test should be performed to test the given hypothesis: verage time to deliver pizza, once the order is placed, is greater than 25 minutes in the population.
As we know that, a statistical test called a t-test is employed to compare the means of two groups. It is frequently employed in hypothesis testing to establish whether a procedure or treatment truly affects the population of interest or whether two groups differ from one another.
The three t-test used to compare means are the one-sample, two-sample, and paired t-tests. By using the formula
t = (m - μ) / (s/√n)
Where,
t = t-test
m = mean
m - μ = theoretical value
s = standard deviation
n = variable set size
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-8/9÷1/6
To divide by a fraction, multiply by its reciprocal.
- 8/9*6
Cancel common factor of 3
- 1×8/3=2/1
-8/3=2/1
Simplify to get
- 16/3
Answer:
y=8
Step-by-step explanation:
Multiply both sides of the equation by 4.
y−64=−56
Add 64 to both sides.
y=−56+64
Add −56 and 64 to get 8.
y = 8
and have a good day as well