Question

4x+40=y

HELPPP PLEASE

Answer 1

4x−40

Factor out 4.

4(x−10)

Answer 2

Here we are given a right angled triangle in which there are two unknown angles x and y . we need to find out the values of x and y. Firstly, as we know that the angle sum property of a triangle is 180° . So that,

`\longrightarrow x + y +90^o = 180^o\\`

`\longrightarrow x + y = 180^o -90^o = 90^o \dots \\`

`\longrightarrow y = 90^o - x \dots (i) \\`

And we also have,

`\longrightarrow 4x + 40 = y \\`

from equation (i) , we have ,

`\longrightarrow 4x + 40 = 90 - x \\`

`\longrightarrow 4x + x = 90 +40 \\`

`\longrightarrow 5x = 130\\`

`\longrightarrow x =(130)/(5)\\`

`\longrightarrow \underline{\underline{x = 26^o}} \\`

substitute this value in equation (i) ,

`\longrightarrow y = 90 - 26 \\`

`\longrightarrow \underline{\underline{y = 64^o}} \\`

And we are done!