Question

Answer me fast
I will mark you as brainliest ​

Answer 1

Answer:

Speed of boat upstream = 10 - 5 = 5 km/h

Speed of boat downstream = 10 + 5 = 15 km/h

∴ Total time taken =DistanceSpeed=205+3015=4+2=6h

Step-by-step explanation:

here u go dear

Answer 2

Step-by-step explanation:

AngleS + Angle T+ angle U + angle V = 360°

60 + 70 + angle U + angle V = 360 °

Angle U + angle V = 220 ....(1)

In ∆ UOV

angle OUV + Angle UOV + Angle OVU = 180°

angle U / 2 + angle UOV + angle V/2 = 180°

Angle UOV = 180 - 1/2 ( ANGLE U + ANGLE V)

= 180 - 1/2 ( 220°)

ANGLE UOV= 70°

HOPE IT HELPS YOU