The xy-value in the solution to the given system of linear equation shows that x = 2 and y = -4.
<h3>What is a system of linear equations?</h3>
Whenever two or more linear equations operate simultaneously, we create a System of Linear Equations. These equations must contain one or more similar variables in order to operate together.
When solving a system of linear equations, our objective is to simplify two equations having two variables to a single equation having one variable. Because each equation in the system includes two variables, substituting an expression for a variable is one technique to minimize the number of variables in an equation.
From the given information:
4x + 5y = -12 --- (1)
-2x + 3y = -16 ----- (2)
From equation (1)
4x+5y+(−5y) = −12 + (−5y) (Add -5y to both sides)
4x = −5y − 12
Divide both sides by 4
Replacing the value of x in 
into equation (2); we have:
Simplifying both sides of the equation, we have:
Cross multiply
11y = -44
y = -4
Replace the value of y = -4 into
x = 2
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Answer:
no clue....
Step-by-step explanation:
Answer: The top speed of a zebra is 0.36 feet per second than a wildebeest.
First, we can start by subtracting the top speed of each animal. 64.4 - 64 = 0.4 The zebra is 0.4 km/h faster than the wildebeest.
Now, we just have to move from km/h to feet per second. To start, we need to divide by 3600 because there are 3600 seconds in an hour. Next, multiply by 0.62137 because there are 0.62137 km per mile. Finally, convert the miles to feet by multiply by 5280 (the number of feet per mile).
The result is a speed of about 0.36 feet per second.
Answers:
- Volume
- Surface area
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Explanation:
The volume is the amount of stuff that a container can hold on the inside, while the surface area is the amount of stuff that goes on the outside of the container (eg: the amount of paint or wallpaper). In the case of wallpapering a room, we're actually doing the inner walls rather than the outside walls; however, it's the same concept. The surface area only deals with the surface and we want to find out how much area we have to cover. That way we can know how much wallpaper to buy. For problem 1, he needs to know the volume so he can find out how much trash each can would be able to hold. The greater the volume, the larger the bin. For instance a small wastebasket would have a small volume compared to a large waist high heavy duty trash container.
Answer:
68°
Step-by-step explanation:
POR and QRO are the same size
