3x + 8(x + 9) = -5
3x + 8x + 72 = -5
11x + 72 = -5
11x + 72 - 72 = -5 - 72
11x = -77
11x/11 = -77/11
x = -7
All you have to do for this equation is to substitute the y in the second equation with what y equals to. Then you distribute and combine like-terms.
Answer: 3a - 8
The product of ‘a number’ and 3 could be written as 3 x a or 3a
Eight less than 3a means 3a minus 8 or 3a - 8
Answer:
Zero is the outlier.
Step-by-step explanation:
the rest of the numbers are all two-digit numbers while zero is one digit and farther away on a number line.
hope i helped!
B.
(9)^2 + (12)^2 = 225
Square root of 225 gives you 15 !!
We found it by applying Pythagorean’s theorem which only applies to right triangles.
Hope it help !!
Perimeter (P) = 2 · Length(L) + 2 · Width (W) → P = 2L + 2W
Solve for either L or W (I am solving for L).
200 - 2W = 2L
(200 - 2W)/2 = L
100 - W = L
Area (A) = Length (L) · Width (W)
= (100 - W) · W
= 100W - W²
Find the derivative, set it equal to 0, and solve:
dA/dW = 100 - 2W
0 = 100 - 2W
W = 50
refer to the equation above for L:
100 - W = L
100 - 50 = L
50 = L
Dimensions for the maximum Area are 50 ft x 50 ft
