1). The 2 angles add up to 180 degrees.
2). And 3). The 2 angles are equal.
Answer:
100x-400
B
Step-by-step explanation:
Profit= Revenue - cost
so just subtract the two equations
(700x+100)-(600x+500)
100x-400 which is answer choice B
Answer:
10 minutes
Step-by-step explanation:
Easily figured out by using your fingers and brain math
Answer:
k = 2/5
Step-by-step explanation:
from the question , we have that Suppose y is directly proportional to x
mathematically'
y ∝ x
y = kx ................................................................. where k is the constant of proportionality
given that y = 8, x = 20 where k = ?
so from,
y = kx
we are going to make k the subject of the formula by getting rid of x away from k.
y = kx
divide both sides by x
y/x = kx/x
y/x = k
therefore k = y/x
k = 8/20
k = 2/5
therefore the value of k which is the constant of proportionality in this expression is given to be 2/5
Answer: True
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Explanation:
If you meant to say 
, then we cannot have x^2-4 equal to 0
We can never have 0 in the denominator.
Set the expression equal to 0 and solve for x
x^2 - 4 = 0
(x-2)(x+2) = 0 .... difference of squares rule
x-2 = 0 or x+2 = 0
x = 2 or x = -2
So if either x = 2 or x = -2, then we have x^2-4 equal to zero.
So these are the values we must kick out of the domain to avoid a division by zero error.
In short, the restrictions for x are 2 and -2. That's why the statement is true.
