9514 1404 393
Answer:
3a by 4a
Step-by-step explanation:
For dimensions L and W, the area and perimeter are ...
A = LW = 12a^2
P = 2(L+W) = 14a
Using the second equation, we can find L:
L +W = 7a . . . . . divide by 2
L = 7a -W
Substituting into the area formula gives the quadratic ...
(7a -W)(W) = 12a^2
W^2 -7aW +12a^2 = 0 . . . . arrange in standard form
(W -3a)(W -4a) = 0 . . . . . . . factor (find factors of 12 that total 7)
Then we have the two solutions ...
W = 3a, L = 4a
W = 4a, L = 3a
The rectangle dimensions are 3a by 4a.
Answer:
Step-by-step explanation:
1) x=14 y=40
2)a=10 b=37
3)u=62 v=59
4)s=9 t=14
5)u=66 v=38
hope this helps
Answer:
yes
Step-by-step explanation:
If all contributors to the distribution are doubled, the value of any particular item in the distribution will be double what it was. That is, it will be different.
The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,
