Answer:
The unit cost of one toy reindeer is $3 and the unit cost of one box of cookies is $2
Step-by-step explanation:
Let
x ----> the unit cost of one toy reindeer
y ----> the unit cost of one box of cookies
we know that
----> equation A
----> equation B
Solve the system by graphing
The solution is the intersection point both graphs
using a graphing tool
The solution is the point (3,2)
see the attached figure
therefore
The unit cost of one toy reindeer is $3 and the unit cost of one box of cookies is $2
Answer:
Option B. f¯¹(x) = ³√(– x – 9)
Step-by-step explanation:
From the question given above:
f(x) = – x³ – 9
f¯¹(x) =?
We can obtain the inverse f¯¹(x) of the above equation by doing the following:
f(x) = – x³ – 9
Replace f(x) with y
y = – x³ – 9
Interchange x and y
x = – y³ – 9
Make y the subject . This is illustrated below:
x = – y³ – 9
Rearrange
x + 9 = – y³
Multiply through by –1
–(x + 9) = y³
y³ = – x – 9
Take the cube root of both side
y = ³√(– x – 9)
Replace y with f¯¹(x)
f¯¹(x) = ³√(– x – 9)
Thus, the inverse of the function
f(x) = – x³ – 9
is
f¯¹(x) = ³√(– x – 9)
Area is length X width. So 16.25x 11.75= 190.9375 ft squared. Divide this by 20ft squared since that is how much is in a bag. And you get 9.54 which is abt 10 so that is your answer
Answer:C 2.0< t < 2.50
Step-by-step explanation:
Diameter of circular lake = 2 miles
Radius of the circular lake= 1 mile
Circumference of the circular lake = 2 pi
Speed of Joanna = 3mph
Time t= distance/ speed = circumference of lake / speed
t = 2 pi/ 3 = (2 × 3.142) / 3
t = 6.284/3 = 2.09
This is greater than 2 but less than 2.5, therefore statement C is correct