Plan b because 18×1 (height×number of weeks) is 18. 18×2 is eyes and 18×3 is 54
Answer:
a) (1, 2) not on the graph.
b) (1, -1) is on the graph.
Step-by-step explanation:
Given the equation of the line as:

The points given are
a) (1, 2)
To determine whether it is on the graph of the line or not.
To do so, we can do 2 things:
1. Draw the graph and plot the point on the graph to check whether it is on the graph or not.
2. To put the point in the given equation of the line, whether the equation is satisfied or not.
For method 1: Kindly refer to the attached image of the line and point plotted.
Method 2:
Let us put
in the Left Hand Side (LHS) of equation.

(1, 2) Not on the graph.
(b) (1, -1)
For method 1: Kindly refer to the attached image of the line and point plotted.
Method 2:
Let us put
in the Left Hand Side (LHS) of equation.

(1, -1) is on the graph.
Answer:
6.9 feet
Step-by-step explanation:
You can get this by dividing 27.6 by 4
then can check your answer by multiplying 4 by 6.9
Answer:
Part A) BD = 6.5 cm
Part B) see explanation
Step-by-step explanation:
See the attached figure
Part A) Find the length of BD
ΔDAB is a right triangle at A, AB is 3.3cm , DA is 5.6cm
So, DB is the hypotenuse
Using Pythagorean equation:
DB = √(AD² + AB²) = √(3.3² + 5.6²) = √42.25 = 6.5 cm
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Part B) Show that angle BCD is 90°
Given: CD is 5.2cm , BC is 3.9cm and DB = 6.5 cm
So, CD² = 5.2² = 27.04
BC² = 3.9² = 15.21
DB² = 6.5² = 42.25
So, CD² + BC² = 27.04 + 15.21 = 42.25 = DB²
So, DB represent a hypotenuse at ΔBCD
So, the apposite angle of BD is a right angle
So, ∠BCD = 90°