-12r + 24 = 36
-12r = 12
r = -1
<span>3x(8x-3)+6=2
24x²-9x+4=0, a=24, b=-9, c=4
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Answer:
Surface area = 90 cm²
Step-by-step explanation:
Given net of the rectangular prism shows the dimensions as,
Length = 5 cm
Width = 5 cm
Height = 2 cm
`Expression for the surface area of a rectangular prism = 2(lb + bh + hl)
Here, l = length
w = width
h = height
By substituting the values in the expression,
Surface area = 2(5×2 + 5×2 + 5×5)
= 2(10 + 10 + 25)
= 90 cm²
Answer:
y = 2x - 9
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 2, thus
y = 2x + c ← is the partial equation
To find c substitute (4, - 1) into the partial equation
- 1 = 8 + c ⇒ c = - 1 - 8 = - 9
y = 2x - 9 ← equation of line