Math Problem Solver

1.

a. A computer lab has 15 rows with 20 computers in the first row and 2 more computers in each

row thereafter. How many computers are there altogether?

b. Write 0.56 𝑖𝑛 𝑡ℎ𝑒𝑓𝑜𝑟𝑚 𝑎

𝑏

2. By Mathematical induction prove that for any positive integer 𝑛,

�

�

∑ 𝒊𝟐

𝒊=𝟏

3. Given that

=𝒏(𝒏+𝟏)(𝟐𝒏+𝟏)