Question

Why did the speaker agree to mrs beck conditions

Answer 1

Explanation:

ABCD is a parallelogram where the base DC is 6 cm and height is 4 cm. A rhombus AEFD is drawn on the sides AB and DC as shown in the figure. AF = 4.5 cm and DE = 7.5 cm. What is the area of the parallelogram EBCF?

Answer 2

Answer:

The correct option is A 30 km/hr

Let speed of steamer in still water = x km/hr

Speed of stream = 2 km/hr

Speed downstream = (x + 2) km/hr

Speed upstream = (x – 2) km/hr

Distance covered in 7 hours while downstream = 7(x + 2)

According to the condition,

7(x+2) = 8(x-2)

7x + 14 = 8x – 16

x = 30 km/hrThe correct option is A 30 km/hr

Let speed of steamer in still water = x km/hr

Speed of stream = 2 km/hr

Speed downstream = (x + 2) km/hr

Speed upstream = (x – 2) km/hr

Distance covered in 7 hours while downstream = 7(x + 2)

According to the condition,

7(x+2) = 8(x-2)

7x + 14 = 8x – 16

x = 30 km/hrThe correct option is A 30 km/hr

Let speed of steamer in still water = x km/hr

Speed of stream = 2 km/hr

Speed downstream = (x + 2) km/hr

Speed upstream = (x – 2) km/hr

Distance covered in 7 hours while downstream = 7(x + 2)

According to the condition,

7(x+2) = 8(x-2)

7x + 14 = 8x – 16

x = 30 km/hr