Set up the system of equations:
We'll use elimination to solve this system of equations.
Take the coefficients for y in both problems. Multiply one of them by -1:
Since this coefficient is taken from the first problem, we'll multiply the entire second problem by this negative coefficient:
Take the coefficient for y in the second problem and multiply the entire first problem by that coefficient:
Your system should now look like this:
Combine these two equations to cancel out y:
Divide both sides by 5 to get x by itself:
A fairy soda costs $1.50.Because we know the value of one of the variables, we can plug it into one of the equations:
Subtract 12 from both sides:
Divide both sides by 5 to get y by itself:
A fairy hotdog costs $3.75.
Given =
Two similar pyramid have base area of 12.2 cm² and 16 cm².
surface area of the larger pyramid = 56 cm²
find out the surface area of the smaller pyramid
To proof =
Let us assume that the surface area of the smaller pyramid be x.
as surface area of the larger pyramid is 56 cm²
Two similar pyramid have base area of 12.2 cm² and 16 cm².
by using ratio and proportion
we have
ratio of the base area of the pyramids : ratio of the surface area of the pyramids
x = 12.2 ×56×
by solvingthe above terms
we get
x =42.7cm²
Hence the surface area of the smaller pyramid be 42.7cm²
Hence proved
Answer:
-7 is your answer
Step-by-step explanation:
hope it helps
Answer:
4 plants
Step-by-step explanation:
In this problem, we are given the total area of the garden, which is:
The number of plants that can fit inside the garden is given by the equation:
where:
n is the number of plants
a is the area of each plants
In this problem, the area of each plant is
Therefore, we can re-arrange the equation to find the number of plants that can fit: