Twice the sum of a number and 4 is 14. In this case the numbers are added first, and the ANSWER is doubled.
Answer:
Step-by-step explanation:
H0 : μ = 46300
H1 : μ > 46300
α = 0.05
df = n - 1 = 45 - 1 = 44
Critical value for a one tailed t-test(since population standard deviation is not given).
Tcritical = 1.30
The test statistic :(xbar - μ) ÷ (s/sqrt(n))
The test statistic, t= (47800-46300) ÷ (5600√45)
t = 1500
t = 1500 / 834.79871
t = 1.797
The decision region :
Reject H0: if t value > critical value
1. 797 > 1.30
Tvalue > critical value ; We reject H0
Hence, there is sufficient evidence to conclude that cost has increased.
Answer:
Step-by-step explanation:
Start by determining the simpler angle 
(or, the complement of the highlighted angle in red on your image). The cosine of that angle is
Now, back to the actual red-circled angle. That one is going in the negative direction and ends up in the same position on the unit circle. Since cosine is an even function, its value is the same whether you evaluate at an angle theta, or its complement 2pi-theta. So, the final answer is:
Step-by-step explanation:
$450×15%= D (downpayment)
$450-D= B (balance)
B÷18= MB (monthly balance)
MB ×12%= I (interest)
MB+I= MI (monthly installment)
(MI×18)+D= Total Paid
...and whomever you're doing the work for, see if they'll give you extra credit for correcting their TWICE misspelled word.
Catch is...YOU have to find it! (:
Answer:
f(x)=-x2
Step-by-step explanation:
I believe the first one has a vertex at (-4, 0), the second at (4, 0), the third at (4, -4). The only remaining answer is the last one.
