R1 r3 in an electric instrument called a wheatstone bridge electric resistances are related byr1/r2=r3/r4. find r 2 if r1 = 10.00 ω r3-6470, and r2 = r4-15.0 . if necessary, round to two decimal places.

R2 = 43.03 ohms

Step-by-step explanation:

If R2=R4-15, then R4 = R2+15

According to the Wheastone bridge equation we have:

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)