2x+7=5y-9

please help very urgent ik very lost :,)

5/2y - 8

Step-by-step explanation:

Step 1: Add -7 to both sides.

2x+7+−7=5y−9+−72x=5y−16

Step 2: Divide both sides by 2.

2x2=5y−162x=52y−8

too lazy to do the math but yk

Step-by-step explanation:

ok so first you wanna make sure you isolate variables, to find x you get

2x+7=5y-9

2x=5y-2

x=(5y-2)/2

plug that into the equation, then you get the y value, which you can put into the equation again (by equation i mean 2x+7=5y-9)

then you have both x and y

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice