7. ‡” 8on top(-1/2)^n-1
n=1
8.‡” 8 on top 3(0.4)^n-1
n=1
To solve the given equations, you need to substitute the value of n into the expressions and perform the required operations. Let's solve each equation step by step.
Equation 7:
‡” 8 on top(-1/2)^(n-1), n=1
Step 1:
Substitute the value of n into the expression:
‡” 8 on top(-1/2)^(1-1)
Step 2:
Simplify the exponent:
‡” 8 on top(-1/2)^0
Step 3:
Any number to the power of 0 is equal to 1:
‡” 8 on top1
Therefore, the answer to Equation 7 is 8.
Equation 8:
‡” 8 on top 3(0.4)^(n-1), n=1
Step 1:
Substitute the value of n into the expression:
‡” 8 on top 3(0.4)^(1-1)
Step 2:
Simplify the exponent:
‡” 8 on top 3(0.4)^0
Step 3:
Any number to the power of 0 is equal to 1:
‡” 8 on top 3(1)
Step 4:
Multiply 3 and 1:
‡” 8 on top 3
Therefore, the answer to Equation 8 is 8/3.