Answer:
AC = 7.73
Step-by-step explanation:
∵ DE // AC
∴ m∠BDE = m∠BAC ⇒ corresponding angles
∴ m∠BED = m∠BCA ⇒ corresponding angles
∵ ∠B is common angle
∴ Δ BDE is similar to Δ BAC
∴ BD/BA = DE/AC = BE/EC
∵ AD = 6 and AB = 17
∴BD = 17 - 6 = 11
∵ DE = 5
∴ 11/17 = 5/AC
∴ AC = (5 × 17) ÷ 11 = 7.7272 ≅ 7.73
Answer:
there are 200 students
Step-by-step explanation:
let no if students enrolled in commerce be nA) and mathematics be n(B)
n only(A)=20
n only(B)=90
n (A intersection B)=30
n(AUB)=60
now
n(U)=20+90+30+60
n(U)=200
The answer is B
hope this helped
Answer:
-5/3 or -1.7
Step-by-step explanation:
