40% as a decimal = 0.4
x = full marks
30 = 40% of x
0.4x = 30 ---> Divide both sides by 0.4 to get x
x = 75
<u>Full marks: 75</u>
Y + 5 = -8/5(x - 1)
y + 5 =-8/5x + 8/5
y + 25/5= -8/5x + 8/5
y = -8/5x - 17/5
Answer:
2/3
Step-by-step explanation:
Given the expression
2/5÷3/5
= 2/5 * 5/3
= (2*5)/(5*3)
= 10/15
= 2/3
Hence the required answer is 2/3
Answer:
The width of the path is 3 feet.
Step-by-step explanation:
It is given that a rectangular garden has an area of 12 ft by 5 ft.
The area of a rectangle is
Let the width of the path be x.
New length = 12+2x ft
New width = 5+2x ft
Area of garden including gravel is
The area of gravel is
It is given that the area of gravel is 138.
Rewrite the equation in standard form.
Factor form of above equation is
Using zero product property, we get
Variable x represents the width of path, so the value of x can not be negative.
Therefore the width of the path is 3 feet.