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
Dominik [7]
3 years ago
12

BRAINLIEST

Mathematics
2 answers:
klio [65]3 years ago
7 0

Answer:

The linear equation which models this situation is given by:

        A.

                     y = 60x + 25  

Step-by-step explanation:

It is given that:

A plumber charges a consultation fee of $25 then charges $60 an hour.

Let x represents the number of hours.

and y represents the total fee for x hours.

This means that x is an independent variable since the value of such a variable is to be assigned and y is the dependent variable since the value of y is obtained corresponding to different values of x.

Hence, we have:

     The total cost will be:

               y= 60x+25

OverLord2011 [107]3 years ago
5 0
The linear equation is:

$25 consultation fee: b
$60 an hour to repair: mx

y = $60x + $25
the answer is a
You might be interested in
Write the equation of the line that passes through (-1, -3) and is parallel to the line that passes through (10, 3) and (7, -1).
REY [17]

Answer:

y=4/3 x -5/3

Step-by-step explanation:

Please see attached picture for full solution.

8 0
3 years ago
the vertex angle of an isosceles triangle has a measure of 24 degrees. what are the measures of the base angles?
svlad2 [7]
First you must remember that: An isosceles triangle consists of a vertex angle and 2 CONGRUENT base angles.

subtract 180-24
156/2
=78

CHECK:
25+78+78=180
7 0
3 years ago
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.
valina [46]

Answer:

A sample of 179 is needed.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.85}{2} = 0.075

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.075 = 0.925, so Z = 1.44.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

A previous study found that for an average family the variance is 1.69 gallon?

This means that \sigma = \sqrt{1.69} = 1.3

If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?

A sample of n is needed, and n is found for M = 0.14. So

M = z\frac{\sigma}{\sqrt{n}}

0.14 = 1.44\frac{1.3}{\sqrt{n}}

0.14\sqrt{n} = 1.44*1.3

\sqrt{n} = \frac{1.44*1.3}{0.14}

(\sqrt{n})^2 = (\frac{1.44*1.3}{0.14})^2

n = 178.8

Rounding up

A sample of 179 is needed.

7 0
3 years ago
What is the turning of the graph of f(x) = |x+3| - 2?
Verdich [7]

i solved that here

http://lianmath.com/what-is-the-turning-of-the-graph-of-fx-x3-2/


5 0
3 years ago
There are four more women than men at a golf club.
marissa [1.9K]

Answer: I think its 4 + 2m

5 0
3 years ago
Other questions:
  • QUICK please I need your answer fast and you will be marked as the brainliest!
    11·2 answers
  • I need help with this problem please
    14·1 answer
  • A king wanted to reward his adviser,a wise man of the kingdom.so he asked the wiseman to name his own reward.the wiseman thanked
    12·1 answer
  • Determine whether the point (1, 5) is a solution to the system of equations. Explain your reasoning in complete sentences.
    15·2 answers
  • Kimberly is 3 times as old as her sister,halley. how many times kimbery's age is halley's age
    15·2 answers
  • Teorema de pitagoras AYUDAAA<br>no entiendo nadaaa​
    10·2 answers
  • Choose the answer based on the most efficient method as presented in the lesson.
    15·1 answer
  • Kim preformed a transformation on rectangle ABCD to create image A’B’C’D’, as shown in the figure below
    12·2 answers
  • What is the equation of a straight line that passes through the point (0, 1)
    12·1 answer
  • What are the 4 items needed to create a graph<br> and define them
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!