The formula of an area of a rectangle:
We have l = 2w + 40
Substitute:
Answer:
( 13*16) - 6
Step-by-step explanation:
there are 13 cases containing 16 bottles.
janelle has drank 6 bottles of water
the formula she created was (16 - 13) x 6
the error is that 6 needs to be deducted from the total bottles
and the cases needs to be multiplied by the bottles
= ( 13*16) - 6
the corrected expression is : ( 13*16) - 6
Answer:
k = -3/5
h = 10/3
Step-by-step explanation:
3x + ky + 2 = 0
5x - y + h = 0
Divide both sides of the first equation by 3. Divide both sides of the second equation by 5.
x + (k/3)y + 2/3 = 0
x - (1/5)y + h/5 = 0
Since both equations represent the same line, the corresponding terms must be equal.
x = x
(k/3)y = -(1/5)y
2/3 = h/5
Solve the first equation for k and the second equation for h.
k/3 = -1/5
k = -3/5
h/5 = 2/3
h = 10/3
Answer:
(2, - 5 )
Step-by-step explanation:
Given the 2 equations
y = - 3x + 1 → (1)
4x + y = 3 → (2)
Substitute y = - 3x + 1 into (2)
4x - 3x + 1 = 3
x + 1 = 3 ( subtract 1 from both sides )
x = 2
Substitute x = 2 into (1) for corresponding value of y
y = - 3(2) + 1 = - 6 + 1 = - 5
solution is (2, - 5 )
