Answer:

Step-by-step explanation:

Putting x = 1
=> 
Given that f(1) = 1
=> 
=>
-------------------(1)
Now,
Putting x = 2
=> 
Given that f(2) = 5
=> 
=> 
=>
----------------(2)
Subtracting (2) from (1)

For b , Put a = 9 in equation (1)

Answer: B. 12.7
Step-by-step explanation:
Answer:
55deg
Step-by-step explanation:
Since ABC is similar to DEF,
angle A = angle D
angle B = angle E
angle C = angle F
therefore, angle E = 55deg
this is a topic on congruence and similarity.
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Answer:
v = 9
Step-by-step explanation:
Use the method of cross- multiplying
=
⇒ ad = bc
8v = 12 × 6
8v = 72 ( divide both sides by 8 )
v = 9
Answer:
6
Step-by-step explanation:
Foot long = 1 foot
6 / 1 = 6 foot pieces