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Y_Kistochka [10]
3 years ago
5

How do you solve 3^2x=81

Mathematics
2 answers:
Jobisdone [24]3 years ago
7 0

Answer:

x=ln(81) over 2ln(3)

Step-by-step explanation:

Using ln as its base thing instead of log and the formula usually is log over log. Plus you have to bring down the power that way.

qwelly [4]3 years ago
4 0

Answer:

x=2

Step-by-step explanation:

3^2x = 81

3^2x = 3^4

Compare powers

2x = 4

x = 2

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Maylin is mailing a package that has the
yarga [219]

Answer:

V=378 inch³

Step-by-step explanation:

The package is in the shape of a cuboid. The volume of a cuboid is given by :

V = lbh

l=length, b=breadth and h=height

Area of base = 54 inch²

Height of box, h = 7 in

It means that, volume of the package is :

V = 54 × 7

V=378 inch³

So, the volume of the package is 378 inch³.

3 0
3 years ago
The function C(x)=17.5x-10 represents the cost (in dollars) of buying x tickets to the orchestra with a $10 coupon. How much doe
Rudiy27

Answer:

8 tickets

Step-by-step explanation:

x = 10 in the given equation.

We have then:

C (x) = 17.5x - 10

C (10) = 17.5 * (10) - 10

C (10) = 165

Answer:

to buy 10 tickets cost:

$ 165

b. How many tickets can you buy with $ 130?  

For this case we must make the substitution: C (x) = 130

We have then:

C (x) = 17.5x - 10

130 = 17.5x - 10

Clearing x we have:

17.5x = 130 + 10

17.5x = 140

x = (140) / (17.5)

x = 8

Answer:

You can buy 8 tickets with $ 130

5 0
2 years ago
Nitrogen makes up about 78% of air. If you have 2 L of air, how many liters of nitrogen are in the air?
NemiM [27]

Answer:39%

Step-by-step explanation:

78/100÷2

78/100×1/2

=39

5 0
3 years ago
So, This question is for Adding and subtracting positive and negative numbers Im trying to learn how to solve questions like thi
Ludmilka [50]
The eight should be in parentheses but the eight turns into a positive making the answer 4

hope this helps!

7 0
3 years ago
SOrry again but pleaaaase help
nikdorinn [45]

Answer:

<em><u>4(10+9) - 40 + 36</u></em>

<em><u>9(5+2) - 45 + 18</u></em>

<em><u>3(12+7) - 36 + 21</u></em>

6 0
2 years ago
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