Work out a) 2/7+3/7 b) 5/8+7/8 c) 2/3-1/2

a) 5/7 b) 12/8, 1 4/8

Step-by-step explanation:

a) 5/7

b) 2/3

c) 1/6

Step-by-step explanation:

a) 2/7 + 3/7

since the denominators are both 7 we use 7 as the LCM ( lowest common multiple)

2+3/7 = 5/7

b) 5+7/8 = 12/8. 4 can go into both numbers so it gives 3/2

c) 2/3 - 1/2 multiply the denominator since they are different (3×2) =6

4-3/6 = 1/6

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :