Which equation represents a line that is perpendicular to the graph of the line
-2y = 4x + 10?

-2y=4x+10

in order to solve this linear equation, we need to group all the variables terms on one side, and all the constant terms on the other side of the equation.

In our example

-term 10, will be moved to the left side .

Notice that a term changes sign when it

'moves' from one side of the equation to the other.

-2y+(-10)=(4x+10)+(-10)

We need to get rid of expression parentheses.

If there is a negative sign in front of it, each term within the expression changes sign

Otherwise, the expression remains unchanged.

in our example ,there are a negative expression

-2y-10=4x+10-10

Answer : x= - y+5/2

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step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

answer: 414,377,008

step-by-step explanation:

just multiply it