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densk [106]
3 years ago
10

3, 9, 27, 81... Which exponential function describes the given sequence? A) y = (- 1 3 )x B) y = 1 3 x C) y = (-3)x D) y = 3x

Mathematics
2 answers:
Oliga [24]3 years ago
8 0
D) Y=3x

3*3=9
9*3=27
27*3=81
nataly862011 [7]3 years ago
6 0

Answer:

D

Step-by-step explanation:

The common ratio is 3. The first term is 3 or 31; the second term is 9 or 32; the third term is 27 or 33; the fourth term is 81 or 34. The correct answer is y = 3x

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4 years ago
K+ OH-<br> What’s is the formula for this
ruslelena [56]

Answer:

check the periodic table

3 0
3 years ago
Please help!! I don’t get it
Marrrta [24]

Answer:

Each hotdog costs $1.65

Each juice drink costs $1.05

Step-by-step explanation:

Let's begin by letting x represent the number of hot dogs and y the number of juice drinks.

The Baxter family bought 6 hot dogs and 4 juices for $14.10.

6x + 4y = 14.10

The Farley family bought 3 hot dogs and 4 juices for $9.15.

3x + 4y = 9.15

Now, we subtract these equations.

6x + 4y = 14.10\\- (3x + 4y = 9.15)

Since y has reversed coefficients, it gets eliminated. Now solve for x.

6x+4y-3x-4y=14.1-9.15\\3x = 4.95\\\frac{3x}{3} = \frac{4.95}{3}

\frac{4.95}{3} = 1.65

x = 1.65

NOW, we find y by substituting x with 1.65 (in either equation).

We'll use the first equation.

6x + 4y = 14.10

6(1.65) + 4y = 14.10

9.9 + 4y = 14.10\\4y = 14.1 - 9.9\\4y = 4.2

\frac{4y}{4} = \frac{4.2}{4} \\y = 1.05

x = 1.65

y = 1.05

x represents hotdogs and y represents juice drinks.

Therefore, each hotdog costs $1.65 and each juice drink costs $1.05.

<em> I hope this helps! :)</em>

6 0
3 years ago
In how many ways can six people sit in a six-passenger car?
nekit [7.7K]

Answer:

number of ways = 720

Step-by-step explanation:

The number of ways  six people sit in a six-passenger car is given by the number of permutations of 6 elements in 6 different positions ( seats), then

number of ways = number of permutations of 6 elements = 6! = 6 * 5 * 4 *3 * 2 * 1 = 720

Since the first person that sits can be on any of the seats , but then the second person that sits can choose any of 5 seats (since the first person had already occupied one) , the third can choose 4 ... and so on.

5 0
4 years ago
Plzzzzzzzzzzz Help me
Sati [7]

-3 < 0  Because -3 is less than 0.

Hope this helps ;P

3 0
3 years ago
Read 2 more answers
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