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alina1380 [7]
2 years ago
12

Tracy can wallpaper 7 rooms in a new house in 21 hours. together with her trainee they can wallpaper the 7 rooms in 12 hours. ho

w long would it take the trainee working by herself to do the​ job? round to the nearest tenth.
Mathematics
1 answer:
Lilit [14]2 years ago
8 0
The first thing we must do for this case is to define a variable.
 We have then:
 x: time it takes the trainee to do the work alone.
 For this case we have the following equation:
 7/21 + 7 / x = 7/12
 Solving for x we have:
 x = 28 hours
 Answer:
 
it would take the trainee working by herself about:
 
x = 28 hours
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A landscaper mowed 2.25 yards in 1.5 hours. How much did she mow in one hour?
svlad2 [7]

Answer:

The amount that the landscaper mowed in one hour would be 1.5 yards.

Step-by-step explanation:


5 0
2 years ago
P(x)= 4x^3 -3x^2+5x-2​
PIT_PIT [208]

Answer:

p=4x^3−3x^2+5x−2/x

Step-by-step explanation:

Let's solve for p.

px=4x^3−3x^2+5x−2

Step 1: Divide both sides by x.

px/x=4x^3−3x^2+5x−2/x

p=4x^3−3x^2+5x−2/x

Answer:

p=4x^3−3x^2+5x−2/x

( I hope this was helpful) >;D

6 0
2 years ago
On each task card, there are four statements. Three are correct and one is INCORRECT. Find the incorrect statement and give the
Mrac [35]

Answer:

Statement 4 is incorrect.

Step-by-step explanation:

#4 is incorrect. This statement is assuming that both 3x+5 and 4x are equal, but the correct way to use them and achieve 180 (definition of supplementary) degrees is by writing it as: 3x+5 + 4x = 180. (I spaced the 3x+5 and 4x to make it clear that these are two angles added together.) With this equation, you will be able to find the x and the substitute it back in to complete the equation.

8 0
3 years ago
What is %50 of 67.5<br> need help fast
Leya [2.2K]

Answer:

The answer is 33.75

Step-by-step explanation:

You simply need to multiply 67.5 by .5 in order to find half of it.

7 0
3 years ago
Suppose you work as a clerk at a local retail store earning $6 per hour. The amount of your weekly paycheck (before taxes are ta
Viktor [21]

Answer:

x is the independent variable and it represents the number of hours worked per week by the clerk.

Step-by-step explanation:

An independent variable refers to a variable in model that is varied or changed in order to examine its effect on another variable. The other variable is called a dependent variable.

A dependent variable is a variable in a model that changes as a result of a change in the independent variable.

From the question, x is the independent variable and its represent the number of hours worked by the clerk.

F(x) represents the amount of your weekly paycheck and it is the dependent variable that changes as the number of hours worked, x, changes.

For example, since we are given:

F(x) = 6x ............................... (1)

Where;

F(x) = = depemdent variable = Amount of weekly paycheck (before taxes are taken out)

6 = coefficient of x = Earning per hour

x = Independent variable = Number of hours worked

Assuming x = 1, we can substitute this into equation (1) and have:

F(x) = 6 * 1 = $6

But when x = 2, we have:

F(x) = 6 * 2 = $12

Therefore, the dependent variable F(x) changes from $6 weekly to $12 weekly as the independent variable x changes form 1 hour to 2 hours weekly.

8 0
3 years ago
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