The most important component of a physical structure is a solid foundation on which the rest of the structure sits. A strong foundation allows buildings to last longer and
withstand many outside forces.
Just like the foundation of a building, a strong foundation for algebra is critical for
success and allows you to extend your understanding to more complex mathematical
and real-world situations. What are some of the foundational, or key, concepts of
algebra that you have learned so far?

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 -

im not sure what this means: mc011-7.jpg

step-by-step explanation:

question: use the following table of a school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km

answer: 42 km/h

explanation: 1.4/0.033 42.42424 = 42 km/h

question answered by

(jacemorris04)

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