I don't know about the first one but the second one you just subtract 5 from both sides of the equation:
3y = 14
Then you see, what times 3 equals 14...
It would be a or c that's all i know
It must be an equation in order to be solved for example, 3x+5=11 then x would be 2
Answer:
4).
Step-by-step explanation:
sin A = cos B
Because sin A = CB/AB and cos B = CB/AB.
Answer:
13 and 44
Step-by-step explanation:
let x and y be the 2 numbers with y < x , then
x - y = 31 ( add y to both sides )
x = y + 31 ( subtract 31 from both sides )
x - 31 = y → (1)
4y = x + 8 → (2)
substitute y = x - 31 into (2)
4(x - 31) = x + 8
4x - 124 = x + 8 ( subtract x from both sides )
3x - 124 = 8 ( add 124 to both sides )
3x = 132 ( divide both sides by 3 )
x = 44
substitute x = 44 into (1)
44 - 31 = y , then
y = 13
the 2 numbers are 13 and 44