2 years ago

Somebody help me with this please .

Mathematics

1 answer:

erastova [34]2 years ago

8 0

Step-by-step explanation:

12. Cos 60° = 8/c

0,5 = 8/c

0,5 c = 8

c = 16

D² = V16²-8²

= V256-64

=V192 = V16×12 = 4V12

= 4V4×3 = 8V3

13. Cos 30° = 6/b

V3/2 = 6/b

V3 b = 12

b = 12/V3

b/Sin B = a /sin A

b/Sin90° = 6/ sin 60°

b = 6

1 V3/2

b× V3 = 6

b = 6× 2/V3

= 12/V3

You might be interested in

What is the value of p? A) 55 B) 45 C) 35 D) 125

Margarita [4]

Answer:

Step-by-step explanation:

just subtract 125 and 99

7 0

2 years ago

What are 100.000 digits of pi

Blababa [14]

Answer:

3.14159265359.

Step-by-step explanation:

I just learned about this

hope it helps.

7 0

2 years ago

Read 2 more answers

A prism is completely filled with 2304 cubes that have edge length of 14 cm

boyakko [2]

2304cubes(14^3 cm^3/cube)=6322176 cm^3

4 0

2 years ago

Read 2 more answers

Willis bought a gallon of paint.He painted a wall that is 9 feet high and 10 feet wide.Then he used he rest of the paint to pain

Otrada [13]

First you need to find the surface area of the wall that was painted, and then add the additional area in the hallway that was painted.

The wall that was painted was 9 feet by 10 feet, or 90 square feet. 90 square feet plus the additional 46 square feet in the hallway is 136 square feet, which is the total area that the paint covered.

Therefore the solution is 136 square feet.

7 0

2 years ago

Read 2 more answers

Nine times nineteen Equals to

Leokris [45]

Answer:

171

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers