Answer:
n = -4
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
((6n - 2 • (4n + 7)) + 4) - -2 = 0
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
-2n - 8 = -2 • (n + 4)
Equation at the end of step 3 :
-2 • (n + 4) = 0
Step 4 :
Equations which are never true :
4.1 Solve : -2 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation :
4.2 Solve : n+4 = 0
Subtract 4 from both sides of the equation :
n = -4
One solution was found :
n = -4
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Answer:
Rounded Answer: 0
Not Rounded Answer: -0.00198019802
Step-by-step explanation:
Rounded Answer:
20/101 = 0.19801980198
Round that to 0.2
20/99 = 0.2
0.2-0.2 = 0
Not Rounded Answer:
20/101 = 0.19801980198
20/99 = 0.2
Answer: -0.00198019802
(w - 7)(w + 4)
w^2 - 7w + 4w - 28
w^2 - 3w - 28
B. Identity property of division. Everything divided by 1 is itself.
Answer:
The mammoth died 17.190 years ago.
Step-by-step explanation:
Given information:
- Half-life of C-14 is 5.700 years.
- Living elephant bones commonly contain about 40% C-14.
For every 5700 years, the elephant's bones losses a half-life of C-14. And supposing that the living mammoth bones had the same percentage of C-14.
If the mammoth when living has 40%, then:
- After 5.730 years, the mammoth bones will contain 20%.
- After 11.460 years(2 half-lives), the mammoth bones will contain 10%.
- After 17.190 years(3 half-lives), the mammoth bones will contain 5%.
