(1)-5y+2y
(2)6x+4x
(3)-3m-8(m+1
(4)-8(r-2)+6(r-2)
(5)9m-7m+13
pls explain i don't know this well

REMEMBER:- LIKE TERMS ADDED AND UNLIKE TERMS SUBTRACTED

same sign add

different sign subtract

sign (mathematical operation) of greater no. putted to the answer.

Step-by-step explanation:

1. -5y+2y.

= -3y

2. 6x+4x

=10x

3. -3m-8(m+1).(distributive property)

= -3m-8m+8×1

= -11m+8

4. -8(r-2)+6(r-2)

= -8r-16+6r-12

= -8r+6r-16-12

= -2r-28

5. 9m-7m+13

=2m+13

step-by-step explanation:

the areas of two similar triangles are 18 cm2 and 8 cm2. one of the sides of the first triangle is 4.5 cm. what is the length of the corresponding side of the other triangle?

5/6

step-by-step explanation:

if i remember correctly with perpendicular stuff you just take away the negative