(3a-7)^2
1. 9a^2-21a-21a+49
2. 3a(3a-7)-7(3a-7)
3. (3a-7)(3a-7)
4. Combine like terms
The dryer costs x.
The washer costs $93 more than the dryer, so it costs x+93.
The washer and the dryer cost $793 altogether.
The cost of the dryer is $350.
Answer:
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Step-by-step explanation:
Answer:
f(x) = √7x
g(x) = 1/x -8
To find the domain of f º g we must first find f o g(x)
To find f o g(x) wherever you see x in f(x) replace it by g(x)
That's
f o g = √7(1/x-8)
= √7 / √x - 8
To find the domain equate the denominator to zero
That's
√x - 8 = 0
Square both sides
(√x - 8)² = 0²
x - 8 = 0
x = 8
The domain of f o g is x E R except 8
Hope this helps
The solution would be like this for this specific problem:
<span>Area = L * W = 600
Length = W + 25</span>
<span>Substitute and solve for "W":
(W + 25)W = 600</span>
<span>
w^2 + 25w - 500 = 0
(w - 15) (w + 40) = 0
Positive solution:
Width = 15 meters
Length = 15 + 25 = 40 meters</span>
<span>So, the dimensions of the playground using an
algebraic solution is 15 meters by 40 meters.</span>
To add, the minimum number of coordinates needed to
specify any point<span> within it is the informal definition of the dimension
of a mathematical space.</span>