An electrician bought 500 metres of wire. He sold 43 m 75 cm of the wire to one customer and 158 m 50 cm of it to another customer. What length of wire is now left with him

297.75 metres

Step-by-step explanation:

→ Convert the lengths into centimetres

43m and 75 cm = 43.75 158 m and 50 cm = 158.50

→ Add the decimal numbers together

43.75 + 158.50 = 202.25

→ Subtract from the original length

500 - 202.25 = 297.75

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

you save $70

discount would be 35% off

step-by-step explanation: