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patriot [66]
2 years ago
5

Solve for X, 3^x + 3^2 = 90​

Mathematics
1 answer:
polet [3.4K]2 years ago
8 0

3^x + 3^2 = 90

Simplify the known power:

3^x + 9 = 90

Subtract 9 from both sides:

3^x = 81

Take the cubic root of both sides:

X = 4

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3 years ago
You buy a car for $25,000. It depreciates at the rate of 23% per year.
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The worth of the car in 10 years is $1,831.67 using an exponential equation approach.

What is an exponential equation?

An exponential equation is the one with exponents such X^3(the 3 is the exponent)

The exponential equation required here is the one where the future value would be lower than current value because the car reduces in value year-in-year-out.

FV=PV*(1-r)^N

FV=future worth of the car

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The fact that r is negative means the car is depreciating not appreciating.

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1 year ago
Which question was answered with variable data
vekshin1
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3 years ago
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Help with these problems please, DUE T O D A Y !!!! I’ll try to make you guys brainlist who ever answers first
Makovka662 [10]

Answer:

19) n = -14

20) x = 4

21) b= -14

22) x = 2

23) x = -1

24) x = -9

Step-by-step explanation:

19) Use the distributive property to get rid of the parentheses. You will get:    20-4n = 76. So, n = -14.

20) Multiply both sides of the equation by 2 to get: -8 + x = -4. So, x = 4

21) Add 3 to both sides to get: \frac{b}{14} = -1. So, b = -14

22) Use the distributive property to get rid of the parentheses. You will get: -40 - 5x = -50. Then, add 40 to both sides to get: -5x = -10. So, x = 2.

23) Use the distributive property to get rid of the parentheses. You will get: -72 = -64 + 8x. Then, add 64 to both sides to get: -8 = 8x. So, x = -1

24) Add 2 to both sides to get: \frac{x}{3} = -3. So, x = -9

Hope this helps :)

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2 years ago
Eva has borrowed 200 songs from her friend. She plans to download an equal number of songs on my music player each week for five
laiz [17]

40 songs per week would be correct

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