Answer:
f(4)=23
Step-by-step explanation:
f(4)=7(4)-5
=28-5
=23
Answer:
No solution
Step-by-step explanation:
Substitution is done by substituting one equation into another. To begin solve one equation for a variable.
Substitute y=-4x+3 into -4x-y=-2.
-4x -(-4x + 3) = -2
-4x + 4x - 3 = -2
-3=-2
This is a false statement and there is no variable present anymore. This means the equations have no solution.
X is equal to -11/6 or -1.8333333333..................................
The answer is the first one; 81.26m
The side are 15,15,2,2 because if one side is 30 the other side should be 30 not one so that os wrong this is the correct answer.
area=15×2=30 sq. meters
perimeter=15+15+2+2=34