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Please help me with these last questions im having trouble figuring them out

Please help me with these last questions im having trouble figuring them out-example-1
Please help me with these last questions im having trouble figuring them out-example-1
Please help me with these last questions im having trouble figuring them out-example-2
Please help me with these last questions im having trouble figuring them out-example-3
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Please help me with these last questions im having trouble figuring them out-example-5
User Es Cologne
by
7.5k points

1 Answer

2 votes

Answer: -3

Explanation:


((1)/(9))^(v) = 729

9⁻¹⁽ˣ⁾ = 9³

-v = 3

v = -3

*************************************************************

Answer: 5

Explanation:

log is actually log₁₀ ....... 10 log₁₀ cancels out

*************************************************************

Answer: 1.117519

Explanation:

e ¹⁾⁹

= e°¹¹¹¹¹¹

= 1.117519

*************************************************************

Answer: No Solution

Explanation:

ln (x + 5) - ln (x - 5) = 4 restrictions: x + 5 > 0 and x - 5 > 0 --> x > 5


ln ((x+5)/(x-5)) = 4


(x+5)/(x-5) = e⁴

x + 5 = e⁴ (x - 5)

x + 5 = 54.5982(x - 5)

x + 5 = 54.5982x - 272.99075

-53.5982x = -277.99075


(-53.5982x)/(-53.5982) = (-277.99075)/(-55.5982)

x = 4.999995

rounded to the nearest 4 decimal places: x = 5

5 is not greater than 5 so it is not valid

*************************************************************

Answer: -1.3322

Explanation:

224 eˣ⁻² = 8

eˣ⁻² =
(8)/(224)

eˣ⁻² =
(1)/(28)

ln eˣ⁻² =
ln((1)/(28))

x - 2 =
ln((1)/(28))

+2 +2

x =
ln((1)/(28)) + 2

x = -3.3322 + 2

x = -1.3322

User WebMonster
by
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