Answer:the unknown leg is 7.5
Step-by-step explanation:
The given right angle triangle has a hypotenuse, a known leg and an unknown leg.
From the triangle,
The hypotenuse is 9
The known leg is 5
The unknown leg is x
The formula for Pythagoras theorem is expressed as
Hypotenuse^2 = opposite side^2 + adjacent side^2
Hypotenuse^2 = known leg^2 + unknown leg^2
Therefore
9^2 = 5^2 + x^2
81 = 25 + x^2
x^2 = 81 - 25 = 56
x = √56 = 7.5
Answer:
x=4
Step-by-step explanation:
2x-3=5
Add 3 to both sides
2x=8
divide both sides by 2
x=4
171 is divisible<span> by 9 because its digits add up to 9 i.e. 1+7+1 = 9 and so 171/9 =</span><span>19. ... </span>Use the divisibility<span>to </span>rules to list factors of 171 explain how you determined<span> ...</span>
Answer:
Perimeter of the triangle = 10.48 unit
Step-by-step explanation:
From the ΔABC
∠A = 90°
∠B = 25°
∠C = 180-90-25 = 65°
AB = 4 unit
From the sine rule
AC = 1.86 unit
BC = 
BC = 4.62 unit
Perimeter of the triangle = AB + BC + CA
Perimeter of the triangle = 4 + 4.62 + 1.86
Perimeter of the triangle = 10.48 unit
