All categories

2 years ago

Which statement is true about the sign of a quotient? Check all that apply.

Mathematics

1 answer:

valentinak56 [21]2 years ago

5 0

Answer:

Step-by-step explanation:

B, D, E

because you have a quotient when you divide and has the same rules as multiplication

You might be interested in

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

8 0

2 years ago

Evaluate the expression if m = 3. 3m^2 (SHOW YOUR WORK)

iragen [17]

The value of given expression when m = 3 is 27

<h3>Solution:</h3>

Given expression is $3m^2$

We have to evaluate the given expression for m = 3

To find for m is equal to 3, substitute m = 3 in given expression

From given expression,

$\rightarrow 3m^2$

Plug in m = 3 in above expression

$\rightarrow 3(3)^2$ ------ eqn 1

We know that,

$a^2$ can be expanded as,

$a^2=a \times a$

Applying this in eqn 1, we get

$\rightarrow 3(3)^2=3 \times (3 \times 3)$

Simplify the above expression

$\rightarrow 3(3)^2=3 \times (3 \times 3) = 3 \times 9 = 27$

Therefore, for m = 3 we get,

$\rightarrow 3(3)^2=27$

Thus value of given expression when m = 3 is found

5 0

3 years ago

Can someone tell please simplify these expressions (c)

astraxan [27]

Answer:

12cx^2-24c

-2x^3-12x^2y

Step-by-step explanation:

They shouldn't be written like that but just distribute

3 0

2 years ago

Which of the following statements is true about the relationship between the decimals 0.09 and 0.9?

anygoal [31]

The answer is to the qieston would be B

8 0

3 years ago

Which of the following best approximates the value g(h(1))? A.-7 B.-5 C.0 D.2

Amiraneli [1.4K]

Answer:

Option (B)

Step-by-step explanation:

From the graph attached,

There are two functions graphed,

y = f(x) and y = h(x)

h(1) = 0 [Output value of function 'h' at the input value x = 1]

Since, g[h(1)] = g(0)

Therefore, value of function 'h' (output value) at (input value) x = 0,

g(0) = -5

Option B will be the correct option.

6 0

2 years ago