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Sliva [168]
3 years ago
13

(3n)^2 without exponents

Mathematics
2 answers:
astraxan [27]3 years ago
6 0

(3n)^2

3^2 n^2

3*3 *n*n

9 n*n

lana [24]3 years ago
6 0

Answer:

3n\cdot 3n.

Step-by-step explanation:

We have been given an expression (3n)^2. We are asked to write our given expression without exponents.

Since 3n is raised to second power, this means that 3n is multiplied by itself.

(3n)^2=3n\cdot 3n

Therefore, our required expression would be 3n\cdot 3n.

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A truck driver has a route that takes him 125 miles each way each day that he works. If he makes 15 roundtrips on this route per
7nadin3 [17]

Answer: 3,750 miles

Step-by-step explanation:

Route takes him 125 miles each way so in a day he travels:

= 125 + 125

= 250 miles

He made 15 roundtrips so total miles is:

= 15 * 250

= 3,750 miles

3 0
3 years ago
Tony has 7/8 of a candy bar he wants to split the bar into servings that are 3/10 of the bar how many servings can he make
Irina-Kira [14]

Answer:

35/12 servings

Step-by-step explanation:

(7/8)/(3/10)=(7/8)(10/3)=70/24=35/12

3 0
3 years ago
At the local college, a study found that students earned an average of 14.8 credit hours per semester. A sample of 94 students w
ozzi

Answer:

By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of the sample:

14.8 credit hours per semester.

So

By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.

6 0
3 years ago
Consider the function f(x) = x(x – 4). If the point (2 + cy) is on the graph of f(x), the following point will also be on the gr
kakasveta [241]

Answer:

(2-cy) is the correct answer for the problem

3 0
3 years ago
The radius of a sphere, r, is given by the formula below, where s is the surface area of the sphere. A spherical balloon has a m
liraira [26]
The formula for the radius of a sphere is:
r(s) = sqrt[s/(4pi)]
This is based on the formula that s = 4pi*r^2

As can be seen, as the surface area increases, s/4pi increases, and sqrt(s/4pi) will also increase, meaning that the radius will increase. This continues until the balloon reaches the maximum s = 1500 cm^2.

The correct answer is the first choice:
<span>As the surface area of the balloon increases, the radius of the balloon increases until the maximum surface area is reached.</span>
5 0
3 years ago
Read 2 more answers
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