5y - 10 = -25 a) y = 3 b) y = 7 c) y = -3 d) y = -7

Hi there!

C. y=-3

Step-by-step explanation:

5y-10=-25

add by 10 both sides of an equation.

5y-10+10=-25+10

simplify.

5y=-15

divide by 5 both sides of an equation.

5y/5=-15/5

simplify.

-15/5=-3

15/5=3

15/3=5

3*5=15

5*3=15

y=-3

Hope this helps!

-Charlie

Have a great day!

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.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are