I'd personally go with A and C, The rest don't make too much sense. Don't count on my answer just yet though.
Answer:
± 60
Step-by-step explanation:
aₙ = a₁ * rⁿ⁻¹
a₇ = 30 = a₁ * r⁷⁻¹ = a₁ * r⁶ (1)
a₅ = 120 = a₁ * r⁵⁻¹ = a₁ * r⁴ (2)
(1)/(2): 30/120 = 1/4 = r²
r = ± 1/2 or ± 0.5
a₁ = a₇/r⁶ = 30/0.5⁶ = 1920
a₆ = 1920 * (± 1/2)⁶⁻¹ = 1920 * ± 1/32 = ± 60
Answer:
7x65 is 455
Step-by-step explanation:
I need more info if this does not workout...
Answer:
60%
Step-by-step explanation:
Convert the fraction to a decimal, then multiply by 100
.
(-2ab^3)(-3a^2b^5)<span>Simplifying
(-2ab3)(-3a2b5)
Remove parenthesis around (-2ab3)
-2ab3(-3a2b5)
Remove parenthesis around (-3a2b5)
-2ab3 * -3a2b5
Reorder the terms for easier multiplication:
-2 * -3ab3 * a2b5
Multiply -2 * -3
6ab3 * a2b5
Multiply ab3 * a2b5
6a3b<span>8</span></span>