Using the distributive property, show how to decompose 8 * 78

78 = 70+8

so this means

8*78 = 8*(70+8) = 8*70 + 8*8 = 560 + 64 = 624

The distributive property in general is:

a*(b+c) = a*b+a*c

where in this case, a = 8, b = 70 and c = 8

ya

Step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation:

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 -