Question 1 [5 points]
The question was:
Antique Accents has bought a product from their supplier for $2,295 with discounts of 20% and
30%. For full marks your answer(s) should be rounded to the neares
QNM106: QUIZ 2 PRACTICE QUESTIONS
1. How much should be paid for an annuity that would provide $5000 at the end of every year for
the first 7 years and $8000 at the end of every year for the next 4 ye
QNM106: QUIZ 1 PRACTICE QUESTIONS
1. What amount decreased by 15% is $255? ($300)
2. Company A had a profit of $120,000 at the end of the first year of business. At the end of the
second year of its b
Question 1 [5 points]
The question was:
Sanjeev placed $10,000 in a 90-day term deposit earning 6.5% per year. How much will the bank
pay Sanjeev on the maturity date? For full marks your answer(s) sh
CHM 1311B KEY Midterm 2A
1
# 1. (10 points) Short Answer Questions * indicates partial points possible *
a) The conjugate acid and conjugate base of NH3 are _NH4+_ and _ NH2-_,
respectively. (
1. Let A be an 11 6 matrix such that Ax = 0 has only the trivial solution x = 0
. What is the rank of A?
. Do the columns of A span R11?
A. 0, Yes
B. 6, Yes
C. 6, No
D. 8, Yes
E. 8, No
F. 2, Yes
2. Fo
(Dog 1547. W if P
1. The distance from the point (1, 0, 1) to the plane with equation 2a: y + z = 7 is:
2. Consider the following two lines given in scalar parametric form:
L1 = cfw_(a:,y,z) | :3
Question 1: (3 points)
An iron wire
meters long is cut in two. We form a square with the rst piece and a circle with the second.
(a) How must it be cut for the total area of these two gures to be maxi
1
Vector Spaces
Linear systems or systems of linear equations arise in two ways in economics.
Some economic models have a natural linear structure as expenditure systems. Or, the relationships among t
QNM106I1E
Text Assignment #2
#14.
A. Contribution Margin= CM
CM=S-VC
CM=4.50-0.50
CM=4.00
Contribution Ratio= CR
CR=CM/S X 100%
CR=4/4.5 X 100%
CR=88.89%
B. Sales amount if NI=21000$
NI=TR-TC
TR=TC-NI
Determining the Molar Volume of a Gas
Objective:
The purpose of this experiment is to determine the volume of one mole of hydrogen gas at
standard temperature and pressure (STP).
Data:
Length of Mg Ri
Laboratory Report Form
Experiment 1.
Determination of the Composition of an
Alloy
Checklist:
o Raw Data Sheet written in pen,
signed by TA and attached
o Report Form completed in pen (or
typed) and at
Slide:1
Number of
Number of
Compounding
Compounding
Periods and
Periods and
Time Period
Time Period
Topics
Section 9.6
Section 9.1: Introduction
Section 9.2: Future Value
Section 9.3: Present Value
Se
2
1.
MATveArm F241 129+ L
If cfw_u, v, w is a set of vectors in a vector space V, and a, b, and c are scalars, Which of the
following statements are true?
f; 111.
1v.
2.
.U\0
l-
I
[\D tl
. If a = b =
Objective:
Experiment: Acid-Base Titration of Aspirin
The objective of this experiment is to determine the mass of acetylsalicylic
acid (ASA) in an Aspirin tablet.
Chemicals
Potassium hydrogen phthala
2
1. If the coefcient matrix A in a homogeneous system of 22 equations in 16 unknowns is known to have
rank 5, how many parameters are there in the general solution?
ANSWER
2. For a nonhomogeneous s
Exercises 5.4
Exercise 5.4, Solution 1:
a.
b.
c.
d.
e.
f.
Cost
Amount of
Markup
Selling Price
$50.75
$211.25
$2128.88
$315.00
$950.00
$12,000.00
$14.25
$38.75
$101.12
$135.00
$247.00
$3000.00
$65.00
$
Exercises 5.3
Exercise 5.3, Solution 1:
a.
b.
c.
$48.00
$120.00
$88.00
Amount of
Markup
$12.00
$72.00
$22.00
d.
$42.00
$21.00
Cost
$60.00
$192.00
$110.00
Rate of Markup
on Cost
25%
60%
25%
$63.00
50%
Review Exercises 3
Review Exercise 3, Solution 1:
%C 30%, V f $234,260,Vi ?
%C
(V f Vi )
30%
0.3
Vi
100%
( 234,260 Vi )
100%
Vi
(234,260 Vi )
Vi
0.3Vi 234,260 Vi
Vi 0.3Vi 234,260
1.3Vi 234,260
Vi
Annuities
10.6
Calculating the Periodic Payments ( )
= [
= [
(+)
(+)
]
] ( + )
= [
(+)
= [
]
(+)
] ( + )
Ex 10 What semi-annual payment must be made for 10 years at 5% compounded semi-annually,
Summary of Key Formulas
P=R#B
I = Prt
S = P (1 + rt)
%C =
= S (1 + rt)-1
P=
Pay for pay period =
FV = PV(1 + i)n
PV = FV(1 + i)
Property tax = Assessed value of property # Tax rate
n
=
I = FV - PV
j
i