All categories

4 years ago

Which expression is the coefficient of the n term -1

Mathematics

1 answer:

Elan Coil [88]4 years ago

7 0

Answer:

C. -2n² - n + 5

Step-by-step explanation:

In expression C, the coefficient of the n term is -1;

The expression in choice C is given as:

-2n² - n + 5

The coefficient is the number before a variable;

For n², the coefficient is -2

for n, the coefficient is -1

You might be interested in

Romeo shot 15 free-throws in last night's game. His coach told him he had an 80% free-throw percentage. How many did he make? (c

Fofino [41]

Answer:

30 throws

Explanation:

Given

Total throw shot by Romeo = 15 throws

If he had an 80% free-throw percentage;

additional throw = 80% of 15

additional throw = 0.8 * 15

additional throw = 12 throws

Toal throws made = 15 + 12

Total throws made = 30 throws

Hence the made 30 throws

7 0

1 year ago

Identify a transformation of the function f(x)

N76 [4]

Answer:

2nd option

Step-by-step explanation:

Given f(x) then f(x + a) is a horizontal translation of f(x)

• If a > 0 then a shift left of a units

• If a < 0 then a shift right of a units

Here g(x) = (x - 6)²

The base graph has been shifted right 6 units

7 0

3 years ago

According to a social media blog, time spent on a certain social networking website has a mean of 22 minutes per visit.Assume th

galina1969 [7]

Given:

Mean, μ = 22

Standard deviation, σ = 7

Let's answer the following questions.

a. Given:

Sample size, n = 25

Let's find the probability that the sample mean is between 21.5 and 22.5.

We have:

$\begin{gathered} P(21.5Thus, we have:[tex]\begin{gathered} P(\frac{21.5-22}{\frac{7}{\sqrt[]{25}}}Using the standard normal table (NORMSDIST), we have:[tex]\begin{gathered} P(0.3571)=0.6395 \\ P(-0.3571)\text{ = }-0.3605 \\ \\ P(1.7857)-P(-0.3571)=0.6395-0.3605=0.279 \end{gathered}$

Therefore, the probability that sample mean is between 21.5 and 22.5 is 0.279

b. Given:

n = 25

Let's find the probability that the sample mean is between 21 and 22 minutes.

We have:

[tex]\begin{gathered} P(21Using the standard normal table, we have:[tex]\begin{gathered} P(-0.714286Therefore, the probability that sample mean is between 21 and 22 is 0.2625

c. Given:

n = 144

Let's find the probability the sample mean is between 21.5 and 22.5

[tex]\begin{gathered} P(21.5Therefore, the probability that sample mean is between 21.5 and 22.5 given a sample of 144 is 0.6086

d. Given:

Sample size in a = 25

Sample size in c = 144

The sample size in c is greater than the sample size in a so the standard error of the mean in (c) should be less than the standard error in (a).

As the standard error values become more concentrated

5 0

2 years ago

Answer

elena-14-01-66 [18.8K]

Answer:

There is no correlation between shoe size and math abity.

Step-by-step explanation:

5 0

4 years ago

Find the average rate of change from x = 3 to x = 15 for the function f(x) = 0.01(2)x and select the correct answer below.

Vladimir [108]

Excuse me but his answer is incorrect. To find the proper rate of change you might have to solve it like you would for slope.
First you would find the points for x = 3 and x = 15 would be (3, 0.08) and (15, 327.68). Then using the slope formula you can find 327.60/ 12. That gives 27.3. So in that case the correct answer is C.

8 0

3 years ago

Read 2 more answers