Please help me with this please!

9 for both I  think

Step-by-step explanation:

possbily each workout plan takes half of the trained hours so basicly (6h ÷2plans=3) (12h÷2plans=6) then just add 3 and 6 and get your answer (i might be wrong tho)

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk