Answer:
Step-by-step explanation:
3-k-4-k=k+11
Collecting like terms
-k - k - k = 11 +4 - 3
-3k = 12
Dividing each term by -3
k = 12/-3
k = -4
Answer:
10 pounds
Step-by-step explanation:
You forgot the inequality sing, but since Antoine can't spend more than $18.20, I am positive that the sign is
(Antony can spend $18.20 or less than $18.20).
Therefore, our inequality is: 
where
is the pounds of oranges
Let's solve step-by-step to find how many pounds of oranges he can buy
Step 1. Subtract 5.20 fro both sides of the inequality


Step 2. Divide both sides of the inequality by 1.30


We can conclude that Antony can buy 10 pounds of oranges.
Answer:
Step-by-step explanation:
( x )° + 60° + ( x - 20 )° = 180°
x + 60 + x - 20 = 180
2x + 40 = 180
2x = 140
x = 70
m ( ∠A ) = 70°
m ( ∠B ) = 50°
m ( ∠C ) = 60°
Answer:
Yes, △ABC ∼ △FED by AA postulate.
Step-by-step explanation:
Given:
Two triangles ABC and FED.
m∠A = m∠B
m∠C = m∠A + 30°
m∠E = m∠F = 
m∠D =
°.
Now, let m∠A = m∠B = 
So, m∠C = m∠A + 30° = 
Now, sum of all interior angles of a triangle is 180°. Therefore,
m∠A + m∠B + m∠C = 180

Therefore, m∠A = 50°, m∠B = 50° and m∠C = m∠A + 30° = 50 + 30 = 80°.
Now, consider triangle FED,
m∠D+ m∠E + m∠F = 180

Therefore, m∠F = 50°
m∠E = 50° and
m∠D = 
So, both the triangles have congruent corresponding angle measures.
m∠A = m∠F = 50°
m∠B = m∠E = 50°
m∠C = m∠D = 80°
Therefore, the two triangles are similar by AA postulate.
Answer: I am pretty sure it is 243 J
Explanation: Because I did the math but I don't know how to put the picture ans don't wanna type it xd