1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PSYCHO15rus [73]
3 years ago
11

20 pounds of $4 written as a unit rate ​

Mathematics
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

20 pounds divided by $4= 5

Step-by-step explanation:

You might be interested in
To increase the value of estimated Cohen's d, a researcher increases the sample size. Will this change the value of d?
tatyana61 [14]

Answer:

a. A) Yes; as sample size increases, effect size increases.

b. A) The critical value increases.

Step-by-step explanation:

a.

If all possible samples of size N are drawn from a finite population, Np, without replacement, and the standard deviation of the mean values of the sampling distribution of means is determined then:

σx =d  √N

d = σx . √N

d ∞ N

from this, we can say d is directly proportional to √N

where σx is the standard deviation of the sampling distribution of  means and d is the standard deviation of the population’. The standard deviation of a sampling distribution of mean values is called the standard error of the means,

therefore, we can conclude that:

A) Yes; as sample size increases, effect size increases.

b.

In this estimate, tc is called the confidence coefficient for small samples,  d is the standard deviation of the sample, x is the mean value of the sample and N is the number of members in the sample.

When determining the t-value, given by

t =( (x−µ) /s) * \sqrt{N-1}

it is necessary to know the sample parameters x and s and the population parameter µ. x and s can be calculated for the sample, but usually an estimate has to be made of the population mean µ, based on the sample mean value.

from the above equation it can be deduced that t value is determined with the sample size, and as the sample size increases

A) The critical value increases.

3 0
3 years ago
True or False? A negative sign in front<br> reflects the parabola over the x axis.
Murrr4er [49]
The answer would be true
8 0
2 years ago
What digit is in the hundreds place of 39, 487?
never [62]

Answer:

4

Step-by-step explanation:

6 0
3 years ago
Chalk contains 10% calcium 3% carbon and 12% oxygen find the amount in grams of each of these compounds in 1 kg of chalk
LUCKY_DIMON [66]

Answer:

100 gm calcium, 30gm carbon and 120gm oxygen

Step-by-step explanation:

10% of a kg is 100gm of calcium, 3% of 1 kg is 30gm of carbon and 12% of a kg is 120gm of oxygen

6 0
3 years ago
Two systems of equations are shown below:
emmainna [20.7K]

Answer:

The two linear equations represented in system A as :

3 x + 2 y =3   -------(1)

- 2 x - 8 y = -1  ------(2)

(1) × 2 + (2) × 3 gives

⇒ 6 x + 4 y - 6 x - 24 y = 6 -3

⇒ - 20 y = 3

⇒ y =

Putting the value of y in equation (1), we get

Two linear equation represented in system B is:

3.   -x - 14 y =1

4.   - 2 x - 8 y = -1

-2 ×Equation (3) + Equation (4)=

2 x +28 y- 2 x - 8 y= -2 -1

⇒ 20 y = -3

⇒y =

Putting the value of y in equation (3),we get

As Two system , that is system (A) and System (B) has same solution.

By looking at all the options , i found that Option (D) is correct. The two system will have the same solution because the first equation of System B is obtained by adding the first equation of System A to 2 times the second equation of System A.

6 0
3 years ago
Other questions:
  • Use properties to find the sum or product of 93+(68+7)
    12·1 answer
  • The Weston Laundry washes all the linens for local hotels. In 7 days, they washed 285.38 pounds of towels and 353.47 pounds of s
    12·1 answer
  • Hurry please! A grain silo is 75 feet high and has a diameter of 22.5 feet. The farmer wants to build a second grain silo that i
    5·2 answers
  • A rectangle has an area of 20 square units what can be said if it's height and width
    14·2 answers
  • Which expression factors to 8(x+2)
    11·1 answer
  • I have 8 M&amp;Ms. There are 2 green ones in the pack. What is the proportion of green M&amp;Ms in the pack?
    5·1 answer
  • HELPP PLEASE <br><br> let f(x)=2x^2+3x+1 and g(x)=x^2 +8. Find g(f(x)). Show each step
    13·1 answer
  • Company A is trying to sell its website to Company B. As part of the sale, Company A claims that the average user of their site
    13·1 answer
  • Which represents the solution to the absolute value equation?<br> 312x + 4 - 1 = 11
    12·2 answers
  • What is 5x15 and 7x6
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!