Answer:
1 : 900
Step-by-step explanation:
18 m = 1800 cm
2:1800 reduced is 1:900
Answer:
-7/8
Step-by-step explanation:
7x+8y=56
8y=-7x+56
8y/8=(-7x+56)/8
y=(-7/8)x+7
Slope is the rate of change.
Answer:
b = - 21
Step-by-step explanation:
calculate m using the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (- 4, - 5) and (x₂, y₂ ) = (- 6, 3)
m = 
= 
= - 4
y = - 4x + b ← is the partial equation
to find b substitute either of the 2 given points into the partial equation
using (- 4, - 5 ), then
- 5 = 16 + b ⇒ b = - 5 - 16 = - 21
Answer:
opposite sides have to be parallel and congruent
Step-by-step explanation:
The question is probably incomplete. What i am assuming is that the person might ask for the previous ratio or the total number of pens and pencil in the drawer.
So if it is the previous ratio it obviously would be 47 - 5 : 17 -3 so 42 : 14 and in case he or she is asking for the total number of pens and pencils in the drawer before so they were 42 + 14 hence 56.
