7x+12+63=180
8x+12=180
Subtract 12 from both sides
8x= 168
=c=21
10x-40=50
Add 40 to both sides
10x=90
X=9
4x+72+2x-12=180
6x +60 =180
Subtract 60 from both sides
6x=120
X=20
Generic exponential growth model: y = Ao[1+r]^t
In this case: r = 3.5% = 0.035
y = 2Ao .....[the double of the initial value]
Then: 2Ao =Ao (1 + 0.035)^t
(1.035)^t =2
Take logarithm to both sides
t ln(1.035) = ln(2)
t = ln(2) / ln(1.035) = 0.693 / 0.0344 = 20.15
Answer: 20.15 hours.
Answer:
u = 4
v = 18
Step-by-step explanation:
in a parallelogram, diagonals bisect each other into two equal segments so we can do the following:
2u+2 = 5u-10
subtract '2u' from each side to get:
2 = 3u-10
add 10 to each side to get:
12 = 3u
12/3 = u
u = 4
To solve for 'v':
v/3 = 6
multiply each side by 3 to get:
v = 18
