Answer:
25.56% or $11.50
Step-by-step explanation:
I took it and put it in a sales tax calc.
Answer:
<em>ab+bc+ca=0</em>
Step-by-step explanation:
We are given:
xyz=1
Separating equations:
Solving the first equation for x:
Solving the second equation for y:
Substituting in
xyz=1:
Adding the exponents:
Since 
:
The base is z on both sides so we get rid of them:
Multiplying by ab:
bc+ac+ab=0
Reordering:
ab+bc+ca=0
The answer is x equals 17
A. 5 2/5
b. 32 3/8
c. 2 1/7
d. 6 1/4
Hope this helps!
The answer is: Two possible solutions which are (0.53, 37.19)
Explanation:
Given:
A = 30°
<span>a = 20 </span>
<span>b = 16 </span>
Now use the law of Cosines:
a² = b² + c² - 2bc*cos(A)
Plug in the values:
20² = 16² + c² - (2*(16)*c*cos(30))
<span>400 = 256 + c² - 32c(0.866) </span>
<span>400 = 256 + c² - 27.71c </span>
<span>c² - 27.71c = 400 - 256 </span>
<span>c² - 27.71c = 144 </span>
<span>c² - 27.71c + 191.96 = 144 + 191.96 </span>
<span>(c - 18.86)² = 335.96 </span>
<span>c - 18.86 = √336.95 </span>
<span>c - 18.86 = ± 18.33 </span>
<span>c = 18.86 ± 18.33 </span>
<span>If c = 18.86 + 18.33, then </span><span>c = 37.19 </span>
<span>If c = 18.86 - 18.33, then </span><span>c = 0.53 </span>
<span>c = (0.53, 37.19) Two solutions!</span>
