Solve problems number 78 and 80

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Apr 13th, 2015

78)  combine logs to get

log2(x+7 / x) = 3

Then,

x+7 / x = 2^3 = 8

8x = x + 7

7x = 7

x = 1

80)  L = 2W

Perimeter = 2L + 2W

substitute L with 2W to get

66 = 2(2W) + 2W

66 = 4W + 2W = 6W

W = 11

L = 22

Apr 13th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Apr 13th, 2015
...
Apr 13th, 2015
Aug 22nd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer