The harper family drove 510 miles on their vacation. mr. harper and mrs. harper took turns driving. mr. harper drove 4 times as far as mrs. harper. how far did each drive?
a.
mr. harper: 382 miles; mrs. harper: 128 miles
b.
mr. harper: 128 miles; mrs. harper: 382 miles
c.
mr. harper: 102 miles; mrs. harper: 408 miles
d.
mr. harper: 408 miles; mrs. harper: 102 miles

worth 32 points!

mr harper drove 4 times further than mrs harper

 so take total miles and multiply it by 4/5

510 * 4/5 = 408

 Mr Harper drove 408 miles, Mrs Harper drove 102

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

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