The answerr is 12 square units
Answer:
<h2>
y = 16/25x³</h2>
Step-by-step explanation:
If y is inversely proportional to a^3, this is expressed as;
y∝1/a³
y = k/a³ where k is the proportionality constant
Given a=2, y=10, then 10 = k/2³
k = 10*2³
k = 80
Substituting k = 80 back into the formula;
y = 80/a³ ............. 1
Similarly, if a is directly proportional to x, then a ∝ x i.e a = kx
If x=4, a=20 then;
20 = 4k
k = 20/4
k = 5
Substituting k = 5 back into the formula;
a = 5x ....... 2
Substitute equation 2 into 1;
y = 80/a³
y = 80/(5x)³
y = 80/125x³
y = 16/25x³
<em>Hence the formula for y in terms of x is y = 16/25x³</em>
<em></em>
The store must sell 40 bikes each month to break even.
Step-by-step explanation:
Given,
Operating cost of store = $2400
Average paid per bike = $60
Average selling price of one bike = $120
Let,
x be the number of bicycle.
Therefore, to break even
Total operating costs per month = Total bikes sold each month
2400+60x = 120x
Subtracting 60x from both sides
Dividing both sides by 60
The store must sell 40 bikes each month to break even.
Keywords: linear equation, subtraction
Learn more about linear equations at:
#LearnwithBrainly
Answer:
Solve for x by simplifying both sides of the equation, then isolating the variable.
x=132,−118
Step-by-step explanation:
F(x)=x^2+3 has a domain of X> or equal to 3, and a range of all real numbers
I'm not too sure about the inverse but I think the equation is
sqrt(x-3)=y