Answer:
whois someone? OH ! Right, That dude named Some Won . Sorry.. i'll let him answer.
Step-by-step explanation:
Say the width is W and the length is L
L=3W (and of course W=W)
Now you use the perimeter formula P=2L+2W
80=2(3W) + 2W)
80=6W+2W
80=8W Divide both sides by 8
W=10
Now that you know the width, substitute it back into L=3W to find the length
L=3(10)
L=30
The dimensions are length: 30 cm and width: 10 cm
Answer:
The sum is 10s^2t-5st^2. With two separate sections, it is a binomial, and since the sum of the powers of the variables is 2+1=3, it has a degree of 3.
The answer is 83. First divide 10 by 2, which is 5 for a remaining 85-5+3. 85 - 5 is 80 and 80 + 3 is 83.
