Answer:
By adding up all the sides.
Step-by-step explanation:
An example of this is if you had a rectangle with the sides of 2, 5, 2, and 5 you would add all of those numbers up 2 + 5 + 2 + 5 = 14. The perimeter of the rectangle would be 14.
The correct answer is Forty-Five Thousand Three Hundred And Ninety-One
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−7x+2y=5
3x−5y=−5
The solution for given equations and are x = -0.517 and y = 0.6896.
Step-by-step explanation:
The given is,
..........................(1)
........................(2)
Step:1
Equation (1) is multiplied by 5 ( Eqn(1) × 5)
.........................(3)
Equation (2) is multiplied by -2 ( Eqn (2) × -2 )
.........................(4)
Step:2
Subtract the equation (3) and (4),
( - )
x = -0.517
From the x value equation (2) becomes,
y = 0.6898
Step:3
Check for solution,
..........................(1)
5 = 5
Result:
The solution for given equations and are x= -0.517 and y = 0.6896.
a machine uses 2.5 liters of fuel each hour it runs,its fuel tank was filled with 10 L but 1.5 L have already been used how many more hours will the machine run
The number of hours machine runs with 8.5 L fuel is 3.4 hours.
Given that, a machine uses 2.5 liters of fuel each hour it runs, its fuel tank was filled with 10 L but 1.5 L have already been used.
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Now, 10 - 1.5 = 8.5 L
So, the number of hours = 8.5/2.5
= 3.4 hours
Therefore, the number of hours machine runs with 8.5 L fuel is 3.4 hours.
To learn more about the unitary method visit:
brainly.com/question/22056199.
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Answer:
$69
Step-by-step explanation:
1 - 0.25 = 0.75
original price * (1 - markdown) = sale price
$92 * 0.75 = sale price = $69