Perimeter is P = 2l + 2w. From the question you know that w = 2l + 5 and that P = 28. To find l, plug the expression for w into the perimeter equation:
28 = 2l + 2(2l + 5)
28 = 2l + 4l + 10
28 = 6l + 10
18 = 6l
3 = l
Now find w by plugging 3 into its equation - w = 2(3) + 5. w = 11
Lastly, check your work by plugging everything back into the perimeter equation: 28 = 2(3) + 2(11), which is 28 = 6 + 22. Correct! So the length is 3 in and the width is 11 in.
Answer:
x>2
Step-by-step explanation:
Step 1: Subtract 60x from both sides.
100x−200−60x>60x−120−60x
40x−200>−120
Step 2: Add 200 to both sides.
40x−200+200>−120+200
40x>80
Step 3: Divide both sides by 40.
40x/40> 80/40
x>2
Hope this helped :)
Answer:
x = 8
Step-by-step explanation:
your equation can be written as: x + 3 = 11
subtract 3 from both sides to isolate x: x = 8
your answer is 8
Answer:
Here is your answer mate
Step-by-step explanation:
As we know that 7 person take 90 days so 1 person takes 90×7=630 days
As work has to be finished in 15 days than 630/15=42 so
42 people can complete work in 15 days but as we have already 7 people employed so required are
42-7=35 so 35 more are needed
