Answer:
square root of 81
Step-by-step explanation:
so 9 is rational number.
the rest are irrational number
<span>3n + 4 = 7
</span><span>3n = 7 - 4
3n = 3
n = 1</span>
Answer: the area of the triangle is 23.4 cm²
Step-by-step explanation:
The given triangle is not a right angle triangle. Since two sides and one angle are known, we can either apply the Heron's formula or the Sine formula which is expressed as
Area of triangle = 1/2abSinC
Where a and b are the sides of the triangle and C is the given angle. Therefore,
Area = 1/2 × 8.2 × 6.4 × Sin63
Area = 1/2 × 8.2 × 6.4 × 0.8910
Area = 23.4 cm² to the nearest tenth.
The answers are -4 and 3 :)
