Question

portance of learning the format of scientific research
report for Engineering Students.

Answer 1

Explanation:

It all ties back to the fundamental way banks make money: Banks use depositors' money to make loans. The amount of interest the banks collect on the loans is greater than the amount of interest they pay to customers with savings accounts—and the difference is the banks' profit.

Answer 2

Answer:

The sum of the first 10 terms of the AP is - 150 and the sum of the first 20 terms is 0150–550 = -700.

S10 = (10/2)[2a+(10–1)d] = -150, or

-30 = 2a + 9d, or

2a = -30–9d …(1)

S20 = -700 = (20/2)[2a+(20–1)d], or

-70 = 2a + 19d, or

2a = -70–19d …(2)

Equate (1) and (2),

-30–9d = -70–19d, or

10d = -40, or

d = -4.

From (1), 2a = -30+36 = 6, or a = 3.

The first term of the AP = 3 and the common ratio = -4. Or the AP is 3, -1, -5, -9,…