Answer:
4(x+1)/(4x+5)
4(x+1)/(5-4x)
4(x-(-1))/(4x+5)
Step-by-step explanation:
The numerators in the fractions must equal to 0, or else the expressions won’t have the result of 0.
4(x+1)
4(-1+1)
4(0)
= 0
4(x-(-1))
4(-1-(-1))
4(-1+1)
4(0)
= 0
The expressions with the numerator as 0 have the result of 0.
Answer:
Mikey had 5 cookies. His friend took 2 with him when he left. How many cookies does Mikey have left?
Step-by-step explanation:
Here, 5 would be the starting amount.
-2 would be the amount taken away.
3 would be our final answer.
Answer:
∠ DAB = 48°
Step-by-step explanation:
The sum of the 3 angles in Δ ACD = 180° , then
∠ CAD + 60° + 90° = 180° , that is
∠ CAD + 150° = 180° ( subtract 150° from both sides )
∠ CAD = 30°
Then
∠ DAB + ∠ CAD = ∠ CAB
∠ DAB + 30° = 78° ( subtract 30° from both sides )
∠ DAB = 48°
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