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Answer:
k = 27/4
Step-by-step explanation:
1/5 (k - 3) = 3/4
Multiply both sides by 5 or 5/1:
5 ⋅ 1/5 (k - 3) = 3 ⋅ 5/4
Simplify:
k - 3 = 15/4
Add 3 to both sides:
k - 3 + 3 = 15/4 + 3
Therefore:
k = 27/4
I hope this helps!
Yes, you are right, you need to flip the second fraction:
Answer:
120 cm
Step-by-step explanation:
If you rearrange the lines you will get a rectangle whose sides are 25 cm and 35 cm.
To get a triangle, move the lines inside the rectangle keeping them parallel to the lines in front of them.
Let P the perimeter of the rectangle:
P = 25*2 + 35*2 = 50+70 = 120 cm