4920 is the numb to nestrest ten
Answer:(a)
Step-by-step explanation:
Given
Principal amount ![P=\$ 5000](https://tex.z-dn.net/?f=P%3D%5C%24%205000)
Rate of interest ![R=3.5\ \%](https://tex.z-dn.net/?f=R%3D3.5%5C%20%5C%25)
Time ![T=5\ years](https://tex.z-dn.net/?f=T%3D5%5C%20years)
Simple interest in 5 years
![S.I.=\dfrac{P\times R\times T}{100}](https://tex.z-dn.net/?f=S.I.%3D%5Cdfrac%7BP%5Ctimes%20R%5Ctimes%20T%7D%7B100%7D)
![S.I.=\dfrac{5000\times 3.5\times 5}{100}](https://tex.z-dn.net/?f=S.I.%3D%5Cdfrac%7B5000%5Ctimes%203.5%5Ctimes%205%7D%7B100%7D)
![S.I.=875\ \$](https://tex.z-dn.net/?f=S.I.%3D875%5C%20%5C%24)
So total amount after five years![=5000+875=\$ \ 5875](https://tex.z-dn.net/?f=%3D5000%2B875%3D%5C%24%20%5C%205875)
To figure out long it took for Ingrid to walk her dog,multiply 3*1 and 1/2 or 3*1.5 to get 4.5 hours or 4 and 1/2 hours.
Answer:
d = √(k/R)
Step-by-step explanation:
Eliminate fractions by multiplying by the denominator, then divide by the coefficient of d². Finally, take the square root.
![R=\dfrac{k}{d^2}\\\\Rd^2=k \quad\text{multiply by $d^2$}\\\\d^2=\dfrac{k}{R} \quad\text{divide by $R$}\\\\d=\sqrt{\dfrac{k}{R}} \quad\text{take the square root}](https://tex.z-dn.net/?f=R%3D%5Cdfrac%7Bk%7D%7Bd%5E2%7D%5C%5C%5C%5CRd%5E2%3Dk%20%5Cquad%5Ctext%7Bmultiply%20by%20%24d%5E2%24%7D%5C%5C%5C%5Cd%5E2%3D%5Cdfrac%7Bk%7D%7BR%7D%20%5Cquad%5Ctext%7Bdivide%20by%20%24R%24%7D%5C%5C%5C%5Cd%3D%5Csqrt%7B%5Cdfrac%7Bk%7D%7BR%7D%7D%20%5Cquad%5Ctext%7Btake%20the%20square%20root%7D)
Answer:
Yul I can't help u I don't understand it