Answer:
f(x)=6
Step-by-step explanation:
By Substitution
f(x or coefficient of x)
=6 since X doesn't exist in question above
2/3X
perpendicular slope is opposite of the sign and flip the fraction
Answer:
x = √30
Step-by-step explanation:
From small triangle BDC:
using Pythagorean theorem
CB² = BD² + DC²
x² = BD² + 3²
Fron triangles BDC and ADB.
ΔBDC has long leg BD and short leg DC.
ΔADB has long leg AD and shirt leg BD.
AD : BD = BD : DC
7 : BD = BD : 3
7*3 = BD*BD
BD² = 7*3 = 21
x² = BD² + 3² = 21+9 = 30
x² = 30
x = √30
Answer: 17.59 cm
Step-by-step explanation: C=2πr=2·π·2.8=17.59292 cm
The answers to the questions
