Alex draws the scale model shown as a plan for a large wall mosaic. 10 cm 12 cm a. The wall is 10 m wide and 7 m high. What are the dimensions of the largest mosaic he can make on that​ wall? Explain. b. He will use​ 2-cm square tiles to make his mosaic. How many tiles will he​ need? Explain how you found your answer.

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

there is nothing below so i cannot

step-by-step explanation:

600,000,000,000, or 6e14

step-by-step explanation: