Answer:
x = -9
y = -3
Step-by-step explanation:
We can first multiply the 2nd equation by -6, so we have:
![-6*[-0.8x+0.4y=6]\\=4.8x-2.4y=-36](https://tex.z-dn.net/?f=-6%2A%5B-0.8x%2B0.4y%3D6%5D%5C%5C%3D4.8x-2.4y%3D-36)
Now, we add up this equation to the 1st equation given to eliminate y and solve for x. Shown below:
So, we have the value of x to be -9
Now, we substitute this value in 1st equation and solve for y:
The value of y is -3
So,
<u>x = -9</u>
<u>y = -3</u>
<span><span>problem<span>Solve 6x + 5 = 10 + 5x. Check your solution.</span></span><span><span> </span><span><span>This equation has x terms on both the left and the right. To solve an equation like this, you must first get the variables on the same side of the equal sign.</span> <span>You can subtract 5x on each side of the equal sign, which gives a new equation: x + 5 = 10. This is now a one-step equation!</span> Subtract 5 from both sides.</span></span><span>Check <span><span>Check your solution by substituting 5 for <span>x </span>in the original equation.</span> This is a true statement, so the solution is correct.</span></span><span>Answerx<span> = 5</span><span> </span></span></span>
Answer:
Answer:
a) 10.95
b) 76.65
Step-by-step explanation:
To find the unit price of Ben's video games, divide 43.80 by 4, which is equal to 10.95. So, the unit price is 10.95 at Ben's Game World.
Then, using the unit price we found earlier, multiply 10.95 by 7, which will gives us the cost of 7 games at Roberto's Electronics. You'll get 76.65. So, the cost of 7 games at Roberto's Electronics, using the same unit price at Ben's Game World, would be 76.65.
Hope this helps :)
Answer: The price per pound of Brand Y dog food is 
Step-by-step explanation:
We have to brands of dog food (Brand X and Brand Y).
So, firstly we are told the total cost of 8 pounds of Brand X and 1 pound of Brand Y 
:
(1)
Then, we are told the total cost of 16 pounds of Brand X and 8 pounds of Brand Y 
:
(2)
Now we have two equations with two unknowns and we need to find 
.
Multiplying eqquation (1) by 
:
(3)
Adding (2) and (3):
(4)
Isolating :
(5) This is the price per pound of Brand Y dog food
Answer:
24.03 feet
Step-by-step explanation:
tan(59⁰)=40/x
x=40/tan(59°)
x=24.03
