WOODWORKING Oliver makes rectangular blocks like the one shown and then glues them together to make a plaque. Find m∠1 , m∠2 , and m∠3 , so he can cut the pieces of the plaque.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.