Answer:

Step-by-step explanation:

there is a factoring rule where

So,
a = x
b = y + z
4n - 7 = 13
4n = 20
n = 5. Hope it helps!
Answer:
x ≤ -15
Step-by-step explanation:
-x / 3 ≥ 5
multiply by 3
-x ≥ 15
add x to both sides and subtract 15 from both sides
-15 ≥ x or x ≤ -15
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Add sides 9


Subtract sides 6z


Divide sides by 2


Thus ;






Done...
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Answer:
3
Step-by-step explanation:
Arc length = radius × angle
s = r θ
60 cm = 20 cm × θ
θ = 3 radians