The ratio of boys to girls in a group is 7:3. If there are 40 more boys than girls, work out how many girls there are

Odadasdsadasadad

Step-by-step explanation:

These units equal to 40. Therefore, each of these units would be equal to 10. If this is the case, then for the ratio to be true, each of the other units would be 10 as well. Therefore, this will give a total of 100.

Step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47