Secd(38)
= 1/cosd(38)
= 1/sqrt[1-sind^2(38)] because cos^2(x) + sin^2(x) = 1
cos(30) = sqrt(3)/2 = 0.8660
cos(45) = 0.707
so cos(38) can be assumed to some where around 0.8
= 1/0.8
= 1.25
Therefore D is correct answer
Answer:
peanut butter cost $0.55
Step-by-step explanation:
j=jelly
p=peanut butter
4p+7j=$6.95
8p+6j=$8.45
solve for p:
8p=8.45-6j
p=(8.45-6j)/8
substitute for p
4(8.45-6j)/8+7j=6.95
reduce
(33.8-24j)/8+7j=6.95
4.225-3j+7j=6.95
4j=6.95-4.225
4j=2.725
j=0.68125
8p+6(0.68125)=8.45
8p+4.0875=8.45
8p=4.3625
p=0.5453
Q: What is the equation of the exponential curve that passes through the points (0,3) and (5, 96)?
Answer: y=3 (2)x
Answer:
C
The problem:
What can x not be so that the following is a function:
(8,5), (6, 8), (X, 11), (0, 12)?
Step-by-step explanation:
A set of points is a function if every element,x, in the domain is paired with one y from the range.
So basically we don't want any repeated x. x would be a repeat if x is 8 since it has already been paired with 5.
Summary we are saying x can't be 8 because x=8 is already paired with y=5 so we can't pair it with another different y.