Answer:
3
Step-by-step explanation:
I did k-12 test and got it right
Answer:
Height is 40√2 m or 56.57 m
Explanation:
Use Pythagoras theorem: a² + b² = c²
where 'a' and 'b' are the legs and 'c' is the hypotenuse
Here given:
Substitute values:
(20)² + (h)² = 60²
400 + h² = 3600
h² = 3600 - 400
h² = 3200
h = √3200
h = 40√2
h = 56.6 meter
Answer:
the correct answer is 120 square meters
Step-by-step explanation:
DG is a half diagonal and it intersects with the other diagonal at 90°. So it forms a right angle triangle. Using Pythagoras theorem
13^2-5^2=d^2
169-25=d^2
144=d^2
d=√144
d=12
so the other half diagonal is 12m
the two diagonals will be 2×5 and 2×12
the two diagonals will be 10m and 24m
area of a rhombus=1/2d1d2
area of the rhombus= 1/2×10×24
area of the rhombus=120 square meters
3k+10=2k-21
-10 -10
3k=2k-31
-2k
k=-31
that's your answer