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GarryVolchara [31]
2 years ago
13

the perimeter of a rectangle is 68 cm. the length is 4 cm less than three times ots width. write a system of equation to find th

e dimensions of the rectangle.​
Mathematics
1 answer:
Gwar [14]2 years ago
6 0

2L + 2w = 68 & L = 3w-4

2(3w-4) = 68

6w-8= 68

6w = 60

W= 10

L = 3*10-4

L= 30-4= 26

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16-5(3t-4)=8(-2t+11) How to Solve
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16 - (5)(3t) - (5)(-4) = (8)(-2t) + (8)(11)

16 - 15t + 20 = -16t + 88

36 - 15t = -16t + 88      <em>subtract 36 from both sides</em>

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3 years ago
The function h=-16t^2 +1700 gives you the height h, of an object in feet, at t seconds. How long will it take the object to hit
garik1379 [7]

Answer:

The object will hit the ground after 10.308 seconds.

Step-by-step explanation:

h(t) = -16t² + 1700

If you graphed this function, the object would be shown hitting the ground when it crosses the x-axis, in other words, when h = 0. So, to find the answer, just set h(t) equal to 0 and solve.

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t = -10.308 and t = 10.308

Since time can't be negative, your answer will be the positive value, 10.308.


6 0
3 years ago
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