Help please. it would really help if someone explained
1 answer:
You might be interested in
Answer:
The value of the constant is 3
Step-by-step explanation:
Let
y ----> the height
x ----> the width
we have
This is the equation of a linear direct variation
The equation of the line passes through the origin
we have the points
(0.5,1.5), (2,6) and (3,9)
see the attached figure to better understand the problem
Find the value of the constant of proportionality k
For (0.5,1.5) ---->
For (2,6) ---->
For (3,9) ---->
therefore
The value of k is equal to 3
The linear equation is
or
Answer:
c ≈ 5.5 cm
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
c² = 2.4² + 4.9² = 5.76 + 24.01 = 29.77 ( take square root of both sides )
c = ≈ 5.5 cm ( to the nearest tenth )
Answer:
200 muffins
Step-by-step explanation:
The selling price of each muffin = $2
The cost price of each muffin = $1.40
The price of electricity = $120
If the number of muffins that Jenny sells in a day is x, then, Jenny's total cost in a day is:
120 + (1.4 * x) = 120 + 1.4x
and the total sales earnings in a day for x muffins will be:
2 * x = 2x
To break even, the total costs in a day must equal to the total earnings. That is;
Solving this:
She must sell 200 muffins in a day to break even.