(1 point) Consider the system 2x + y = 3
-8x + ay = -11
Find a value of a so that the system is inconsistent. If there is no such value, write none.
a =

a=-4

Step-by-step explanation:

1) Isolate x for 2x+y=3 which will give us x=3-y/2

2) Substitute 3-y/2 in the equation -8x+ay=-11

3) Then we simplify

4) Isolate for y

5)Then we simplify in order to get -4

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!