FORMULA:
ANSWER:
We are given new side of square i.e, 2s + 3.
So, Area = (2s + 3)²
- (2s)² + (3)² + 2 × 2s × 3
- 4s² + 9 + 12s
Hence, The area of the new graph is a perfect square trinomial: __4__s² + __12__s +__9__.
X=-13/5
Simplify both sides of the equation, isolate the variable, and then you get your answer.
The best math that i think you should take would be calculus.
(1 month) 125+45=170
(2 month) 170+45=215
(3 month) 215+45= 260
(4 month) 260+45=305
(5 month) 305+45=350
(6 month) 350+45=395
Li needs at least $360 in get account which means 5 months would not work because it is less than $360.
So, add one more $45 and get $395 which is more than enough money for Li.
Overall, Li would need 6 months to get at least $360 in her bank account.
I hope this helps!!
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Thanks!!
The solution is x=5/4.
We use the properties of logs to rewrite the equation:
![\log[(\frac{x}{2})(\frac{20}{x^2})]=\log8 \\ \\\log(\frac{20x}{2x^2})=\log8 \\ \\\log(\frac{10}{x})=\log8](https://tex.z-dn.net/?f=%5Clog%5B%28%5Cfrac%7Bx%7D%7B2%7D%29%28%5Cfrac%7B20%7D%7Bx%5E2%7D%29%5D%3D%5Clog8%0A%5C%5C%0A%5C%5C%5Clog%28%5Cfrac%7B20x%7D%7B2x%5E2%7D%29%3D%5Clog8%0A%5C%5C%0A%5C%5C%5Clog%28%5Cfrac%7B10%7D%7Bx%7D%29%3D%5Clog8)
Get all of the logs on the same side of the equation y subtracting log 8:

Use the properties of logs to rewrite:

Exponentiate:

Multiply both sides by 8x:
1*8x = (10/8x)*8x
8x=10
Divide both sides by 8:
8x/8 = 10/8
x = 10/8 = 5/4