Answer:
I'm pretty sure the answer is C. 6 over 10 , because 4 over 5 minus 2 times 1 over 10 equals 4 over 5 minus 3 over 10
Step-by-step explanation:
4/5 - 2(1/10) =
4/5 - 2/10 =
8/10 - 2/10 =
6/10
Answer:i think its 180
Step-by-step explanation:
Answer:
0.48 rad/sec
Step-by-step explanation:
From the diagram:
We can find 'x' using trigonometry :
Tanθ = opposite / Adjacent
Opposite = x ; adjacent = 4
Tanθ = x / 4
x = 4tanθ
Let u = 4 and v = tanθ
If dx/dt = 3ft/s ;
dθ/dt when x = 3ft
Differentiate x with respect to t
dx/dt (4tanθ)
Let d/dθ tanθ = sec^2θ
Sec^2θ = 1 / cos^2θ
dθ/dt = 1/4cos^2θdx/dt
dθ/dt = 1/4cos^2θ(3)
dθ/dt = 3/4cos^2θ
When x = 3ft
Cosθ = Adjacent / Hypotenus
Hypotenus = √(4^2 + 3^2
Hypotenuse = √16 + 9 = √25 = 5
Cosθ = 4/5
dθ/dt = 3/4(4/5)^2
dθ/dt = 3/4(16/25)
dθ/dt = 48/100 = 12/25 = 0.48 rad/sec
Answer:
the third one, the 6 one, and the last one
Step-by-step explanation:
i hope it help because it like asking you for the number who will give you positive, and if you know negative + negative = positive
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