Jalani15
17.12.2019 •
Mathematics
The perimeter of an isosceles triangle is 53 meters. if the base of the triangle is seven less than two times the congruent sides lengths, find the dimensions of the triangle
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Ответ:
Hence the dimension of triangle are 15, 15 and 23.
Step-by-step explanation:
Alright, lets get started.
Please refer the diagram attached.
Suppose two congruent sides of triangle are : x
Suppose the base of the triangle : y
As per question, the base of the triangle is seven less than two times the congruent sides lengths.
So,
.......................(1)
Now the perimeter of triangle is given as : 53
It means
.......................(2)
Plugging the value of y from equation (1) in equation (2)
Plugging the value of x in equation (1)
Hence the dimension of triangle are 15, 15 and 23. : Answer
Hope it will help :)
Ответ:
The equation is y = $72.99 + $28.45(x - 1), where y is the monthly charge and x is the month in which it is calculated.
Step-by-step explanation:
Step 1; First we need to establish a relation between the difference in costs. For the first month it cost $72.99, during the second month, it costs $101.44 and in the third month, it costs $129.89. Difference in rates
Second months rate - First months rate = $101.44 - $72.99 = $28.45
Third months rate - Second months rate = $129.89 - $101.44 = $28.45.
So for every consecutive month, the charges increase by $28.45
Step 2; Now we develop an equation,
y = $72.99 + $28.45(x - 1), where y is the charge that month and x is the month in which it is calculated.
For x = 1, y = $72.99 + $28.45(1 - 1) = $72.99 + $28.45(0) = $72.99,
For x = 2, y = $72.99 + $28.45(x - 1) = $72.99 + $28.45(2 - 1) = $101.44,
For x = 3, y = $72.99 + $28.45(3 - 1) = $72.99 + $28.45(3-1) = $129.89.
So this is the equation to calculate the cost y the mobile provider charges in month x.