Answer:
See explanation
Step-by-step explanation:
Let x be the number of spade shovels, y -the number of flat shovels and z - the number of square showels sold that day.
The store keeps an inventory of 80 shovels, then
x+y+z=80
The store always buy twice as many spade shovels as square, so
x=2z
The total cost of all shovels is
16x+9.60y+12.80z=1,072
a) The system of three equations is
b) In matrix form this is
c) The determinant is
d) Find three determinants:
So,
e) If the store doubled all prices and inventory, then the new matrix is
Answer:
Part a) variable x (the number of adult tickets sold) and variable y (the number of child tickets sold)
Part b) 
Part c) The number of adult tickets sold was 86
Step-by-step explanation:
Part a) Name a variable for the number of adult tickets sold and name a variable for the number of child tickets sold
Let
x -----> the number of adult tickets sold
y -----> the number of child tickets sold
Part b) Write an equation in two variables to model the problem
we know that
-----> equation A
-----> equation B
substitute equation B in equation A and solve for x
Part c) Using your equation in Part B, solve the problem and answer the question "how many adult tickets did Anne sell?" i
we have
Solve for x
Subtract 416 both sides
therefore
The number of adult tickets sold was 86
Answer:
Option B
Step-by-step explanation:
=> 
=> 
Subtracting both
=> 
Assembling
=> 
Answer:
16:18
24:27
Step-by-step explanation:
16:18 ( multiply both numbers by 2)
24:27 ( multiply both numbers by 3)
Hope this helped even tho I am late
