Answer:
131 in²
Step-by-step explanation:
Let x represent the length of the painting. Given that The width of a painting is 4 inches less than the length. Hence:
Width = x - 4
The area of painting = length * width = x(x - 4) = x² - 4x
The frame that surrounds the painting is 2 inches wide (at the top and bottom, left and right). Hence the total width of the frame = (x - 4) + 2 + 2 = x, the length of the frame = x + 2 + 2 = x + 4
The area of the frame = length * breath = x(x + 4) = x² + 4x
Given that the area of the frame = 240 in², hence:
x² + 4x = 240
x² + 4x - 240 = 0
x = -17.62 and x = 13.62
Since the length cannot be negative, hence length = x = 13.62 inches
Area of painting = x(x - 4) = 13.62(13.62 - 4) = 131 in²
Answer:
She will have 9 feet of tomatoes left.
Step-by-step explanation:
12ft - 3ft = 9ft
Answer:
0.2 g/mL
Step-by-step explanation:
Density is equal to the mass of substance divided by its volume.
Answer:
2= 59 3= 47
Step-by-step explanation:
basically they are both right angles (90 degrees) so in order to find the missing number, subtract the number you are given from 90.
Always. consider 2x which is always even (divisible by 2)
then 2x+1 is the form of all odd numbers.
add 2 of the odd numbers together to get (2x+1)(2y+1) = (4y² +2x +2y) + 1
the part in parentheses is always even can you see why? then adding one again always gives us an odd number.