Answer:
To know the equation of line we need 2 things
slope and y intercept
slope= (y2-y1)÷(x2-x1)
y intercept is y when x =0
then put them in formula f(x)=mx+c
m = slope, c= y intercept
1: slope = 1. y intercept = 4
f(x)=x+4
2: slope = -9/2. y intercept = 11/2
f(x)= -9/2x+(11/2)
3: slope = 1/3. y intercept = -11/3
f(x)=x/3+(-11/3)
4: slope = -1. y intercept = 7
f(x)=-x+7
5: slope = 1. y intercept = -2
f(x)=x+-2
Answer:
40.2×10^6 m ( this is in scientific notation )
4.02×10^7 m (this is in standard form
Step-by-step explanation:
Radius of earth is 6400 km or 6400× 1000 =6400000m =6.4×10^6 m
circumference C is given by formula C = 2πR WHERE C IS CIRCUMFERENCE AND R IS RADIUS
C = 2×π×6.4×10^6
C = 40.2×10^6 m ( this is in scientific notation )
C= 4.02×10^7 m (this is in standard form )
Answer:
x = 27
Step-by-step explanation:
∠ ABD and ∠ BDE are alternate angles and are congruent, then
∠ BDE = 72°
∠ ADB + ∠ BDE + ∠ EDF = 180° ( sum of angles on a straight line ), that is
2x + 72 + 2x = 180
4x + 72 = 180 ( subtract 72 from both sides )
4x = 108 ( divide both sides by 4 )
x = 27
9(.80) = 7.2(.80) = 5.76(.80) = 4.608. round it and it is 4.6 feet
Answer:
im pretty sure its right
Step-by-step explanation: