Mathematics, 10.12.2019 09:31 mprjug6

Dog walker a charges $15 each day and initial set up fee of $40. dog walker b charges $20 each day and an initial set up fee of $25. when will the two dog walkers cost the same, and what will that cost be. (hint: y=mx+b

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Answer from: angiecamachoac1728

Part a) The two dog walkers cost the same when the number of days is equal to 3

Part b) The cost for 3 days will be $85 for the two dog walkers

Step-by-step explanation:

Let

x ----> the number of days

y ---> the total cost in dollars

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value of the linear equation

we have

Dog walker A

The slope or unit rate is equal to

$m=\$15\ per\ day$

The y-intercept or initial set up fee is equal to

$b=\$40$

substitute

y=15x+40 -----> equation A

Dog walker B

The slope or unit rate is equal to

$m=\$20\ per\ day$

The y-intercept or initial set up fee is equal to

$b=\$25$

substitute

y=20x+25 -----> equation B

Equate equation A and equation B

20x+25=15x+40

20x-15x=40-25

5x=15

$x=3\ days$

therefore

The two dog walkers cost the same when the number of days is equal to 3

Find the cost y for x=3 days

substitute in any equation (equation A or equation B)

equation A

$y=15(3)+40=\$85$

equation B

$y=20(3)+25=\$85$

the cost is the same in both equations ---> is correct

Answer from: Quest

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v

Answer from: Quest

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

Idont need but will i pass sixth grade with these grades answer

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