# Can someone give me the correct answers to these? (1 Viewer)

#### ClassOf2013

##### Member
I'm scared that I didn't get the following quesitons right, can someone give me the correct answers (and how they did it?):

*26a
*28a
*29a
*29b
*29e

#### ice555

##### New Member
26a = 110 degrees
28a 2127 squared m
29a w=8
29b i. -1.25
ii. 59.8
29e I forgot lol ceebs

#### Pete15551

##### Member
26a = 110 degrees
28a 2127 squared m
29a w=8
29b i. -1.25
ii. 59.8
29e I forgot lol ceebs
For 29b ii. I put 60, as I thought itll b silly for someone to get 59.8 in a test, so you rekon itll still b marked as correct?

The rest seems to be right

#### ice555

##### New Member
Nah don't think so, I think I wrote both just to be safe lol

#### Rhys123456

##### get rekt
26a) CosC = (A^2 + B^2 - C^2) / 2AB
CosC = (53^2 + 66^2 - 98^2) / (2 * 53 * 66)
C = 110 Degrees

28a) 1/2abSinC (Area of a Triangle)
1/2 * 75 * 60 * Sin71
= 2127m^2

29a) 5W + 20 - 6W + 3 = 15
-W + 23 = 15
-W = -8
W = 8

29b)i) 5.5 (I think)

29b)ii) 62 (Is only correct if 29b)i) is right.)

29e) I can't remember the exact value but I think it was approx. \$900,000, and he could pay it off in 14 years.

#### Pete15551

##### Member
29e) I can't remember the exact value but I think it was approx. \$900,000, and he could pay it off in 14 years.
All right, except this one i believe. I dont think you were suppose to use the Future Value. You'll suppose to use the Present Value to calculate if he was able. In which he wasn't by like \$15000 or so.

#### Rhys123456

##### get rekt
All right, except this one i believe. I dont think you were suppose to use the Future Value. You'll suppose to use the Present Value to calculate if he was able. In which he wasn't by like \$15000 or so.
Yeah I was just reading that while I was marking my own MC. I think I got high 70s. One can hope

#### Pete15551

##### Member
Yeah I was just reading that while I was marking my own MC. I think I got high 70s. One can hope
Thats good man. Im happy for ya

#### ClassOf2013

##### Member
For 29e I calculated the interest per month (\$1500 on a \$300,000 loan at 0.5% per month) and multiplied it by 120, which is half of 240, as he needs to pay it off in 20 years, then added the \$300,000, and divided by 240 to get the monthly amount.

Seems I was way off lol.

#### hjhj

##### Member
hi

hmm i think that this is the z score or something, for this i got 5.2, but it might of been 5.5, i didn't know which one to use so i guessed at the funny symbol one

and for the e) one i used present value and got that he couldn't pay it off because he was about \$14-15000 short but that could be wrong too

:/ yay