3x-12+5-x=2x-7
2x-7 =2x-7
Means there are infinite solutions.
Answer:
C (Lake Depth Answer)
Step-by-step explanation:
Here we want to find the math that <u>ends up with 0</u>.
The stock starts with 12$, but loses 16$.
That's -4$ total, not 0.
The ion starts with 19 protons, and 18 electrons. Protons are postive charges, electrons are negative.
This leaves us with 1 proton, not 0.
The lake depth increases by 6 inches, but evaporates 6.
This leaves us back where we started, with 0.
Ahmed spends 25$, but earns 30$.
This leaves us with $5, not 0.
9514 1404 393
Answer:
C- (14, 4); The vertex represents the maximum profit.
Step-by-step explanation:
The leading coefficient of the quadratic function is negative, so the graph opens downward, and the vertex represents a maximum.
The maximum value is at ...
x = -b/(2a) = -28/(2(-1)) = 14
f(14) = -14^2 +28(14) -192 = 4
The vertex is (14, 4). It represents the maximum profit.
x = 26 m is the width of the pool, length: 29+4 = 33 m.
<u>Step-by-step explanation:</u>
We have A rectangular pool is surrounded by a walk 3 meters wide. The pool is 4 meters longer than its width. If the total area of the pool walk is 372 square meters more than the area of the pool.
Let the width of the pool = x
Then the length will = (x+4) ,over all dimensions will be (x+6) by (x+6+4) or (x+10)
Total area - pool area = 372

∴ x = 26 ft is the width of the pool, length: 29+4 = 33 ft