then 9tm+1 is also triangular. Write each of the following numbers as the sum of three or fewer triangular numbers: 1 69, (b) (c) 185, (a) 56, (d) 287. 5. For n 1, establish the formula (2n+1)? 1 (4t,+1)-(4t,2 BUS 6 Verify that 1225 and 41,616 are simultaneously square and triangular numbers. [Hint: Finding an integer n such that g tinidmou bonincb of no n(n + 1) dutn 1225 2 ud is equivalent to solving the quadratic equation n2n- 2450 = 0.] *w 7. An oblong number counts the number of dots in a rectangular array having one more row than it has columns; the first few of these numbers are sln 01 2 02 6 03 12 04 =20 and in general, the nth oblong number is given by Оn n(n+1). Prove algebraically and geometrically that (а) On 2+4 6+ + 2n. Any oblong number is the sum of two equal 11 () : :

Q: Letter C is 59E, not 53E

A: We need to write (59E)twelve in base 10. (It is given that face value of E is 11)

Q: In Guilford County North Carolina, all voters are either Republicans or Democrats. 39 percent of the…

A: Based on the given information, n=12, and p=0.39. The probabilities will be obtained as given below:…

Q: Number 27

A:

Q: 25+2=

A: First we calculate 2^5.2^5= 2x2x2x2x2=32

Q: Number 9 was not answered. I ask for 5 and 9 not 5 and 6. Thank you.

A: We find linear function using table and then find f(0).

Q: Find x. * 15 6,

A:

Q: Number 28

A:

Q: ust do number 27.

A: 27) To sketch the contour map and graph of the function:

Q: Number 19

A: Solve value for x

Q: answer just letter d  , please

A: Solution:

Q: Evaluate. xp

A:

Q: Number 24, please.

A: detailed solution is given below

Q: Can number 9 be completed please.

A: Given a 1211220021112347451112 b 1202231110240000

Q: Number 14

A: Correct answer 106° and 74°

Q: Number 284

A: Given revenue function: R(x)=-x2+8x

Q: Wilbur landed his plane,

A: In this case, the given information is that Wilbur landed his plane. There are no numerical values…