Answer:
9.75
Step-by-step explanation:
Answer:
y = - 2x - 1
Step-by-step explanation:
Assuming the line has equation y = - 2x + 3
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 2x + 3 ← is in slope- intercept form
with slope m = - 2
Parallel lines have equal slopes, thus
y = - 2x + c ← is the partial equation
Note the line passes through (0, - 1) ⇒ c = - 1
y = - 2x - 1 ← equation of parallel line
We define the variables of the problem:
x = expensive tea
y = less expensive tea
We write the system of equations:
7x + 4y = 6.10 * (140) = 854
x + y = 140
The system of equations is:
7x + 4y = 854
x + y = 140
Resolving we have:
x = 98
y = 42
Note: see attached image for the solution.
Answer:
They are required:
expensive tea = 98 pounds
less expensive tea = 42 pounds
Answer:
Step-by-step explanation:
congruent.
51°