Permutations and Combinations Questions and Answers
Algebra
Permutations and CombinationsPerform the division.
- 8x5+20x6
10x6
- 8x5 + 20x6
10x6
(Simplify your answer.)
Algebra
Permutations and CombinationsDivide. If the divisor contains 2 or more terms, use long division.
4x³-22x² - 4x
4x
The answer is
(Simplify your answer. Use integers or fractions for any numbers in the expression.)
Algebra
Permutations and CombinationsHow many outcomes are possible for one event of a binomial experiment?
01
OOO
O2
O 3
4
Algebra
Permutations and CombinationsSolve the system of equations by the substitution method.
1
5x-y=3
x - 5y = 15
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A.
The solution is
(Simplify your answer. Type an ordered pair.)
OB. There are infinitely many solutions;
OC. There is no solution; or Ø.
1
{(x,y) = x - y = 3} or {(x,y)|x - 5y = 15).
Algebra
Permutations and CombinationsSolve the system of equations by the substitution method.
y= 2x+1
4y - 5x=13
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
OA. The solution is
(Simplify your answer. Type an ordered pair.)
OB. There are infinitely many solutions; {(x,y)ly = 2x + 1} or {(x,y)|4y - 5x = 13).
OC. There is no solution; or Ø.
Algebra
Permutations and CombinationsWhich of the following is a binomial experiment?
O A survey asking 75 people to name their favorite color
O A survey asking 75 people to give their age
O A survey asking 75 people whom they voted for in the election
OA survey asking 75 people if they like the new school building
Algebra
Permutations and CombinationsJanie flips a coin 70 times and records if it comes up heads. If getting heads is a success, what is the probability of a
failure?
0.2
0.5
0.7
1.00
Algebra
Permutations and CombinationsSolve the system of linear equations by graphing.
2x-y=9
y=1
Use the graphing tool to graph the system.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
OA. The solution of the system is
(Type an ordered pair.)
OB. There are infinitely many solutions; {(x,y) |2x -y=9) or ((x,y) ly=1}
OC. There is no solution; or Ø.
10.
10
48
Ay
Q
Q
Algebra
Permutations and CombinationsWithout actually solving the problem, choose the correct solution by deciding which choice satisfies the given conditions.
The length of a rectangle is 7 feet longer than the width. The perimeter is 26 feet. Find the dimensions of the rectangle.
Which choice satisfies the given conditions?
OA. length=10 feet; width=3 feet
OB. length=9 feet; width=2 feet
OC. length=9 feet; width = 4 feet
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Algebra
Permutations and CombinationsEvaluate the expression with the given replacement values.
- 3xy³ when x = 2 and y = - 4
Algebra
Permutations and CombinationsWrite the following number in standard notation.
4.972x10-6
4.972x10-6-
=
Algebra
Permutations and CombinationsUse the slope-intercept form to graph the equation 2x - 5y = - 15.
Use the graphing tool to graph the equation. Use the slope and y-intercept when drawing the line.
Click to
enlarge
graph
Algebra
Permutations and CombinationsApplying Time Value. You invest $1,000 today and expect to sell your investment for $2,000 in 10 years. (LO1)
A. Is this a good deal if the discount rate 6%?
B. What if the discount rate is 10%?
Algebra
Permutations and CombinationsThe weights of boxes of candies produced in a factory are normally distributed with a mean weight of 16 oz and a standard deviation of 1 oz. What is the weight of a box of candies with a z-score of 2?
O 16 oz
18 oz
20 oz
O 22 oz
Algebra
Permutations and CombinationsSolve the system of linear equations by graphing.
y=x+3
y=2x-1
Use the graphing tool to graph the system.
Click to enlarge graph
Algebra
Permutations and CombinationsThe amount of daily time that teenagers spend on a brand A cell phone is normally distributed with a given mean μ = 2.5 hr and standard deviation o = 0.6 hr. What percentage of the teenagers spend more than 3.1 hr?
O 5%
O 10%
O 16%
O 32%
Algebra
Permutations and CombinationsFind the degree of the following polynomial and determine whether it is a monomial, binomial, trinomial, or none of these.
3x +5
Algebra
Permutations and CombinationsSolve the system of linear equations by graphing.
{
y - 4x = 1
8x-2y = -2
Use the graphing tool to graph the system.
+
Click to
enlarge
graph
Algebra
Permutations and Combinationssystems by grap
Solve the system of linear equations by graphing.
x+y = -1
x+y = 3
Use the graphing tool to graph the system.
Click to
enlarge
graph
Part 1 of 2
Ay
O Points: 0 of 1
OU
Algebra
Permutations and Combinationsline from y=mx+
Use the slope-intercept form to graph the equation.
y = - 4x
Use slope and y-intercept when drawing the line.
Click to
enlarge
graph
***
Algebra
Permutations and CombinationsFind the inverse of the following one-to-one defined function:
f(x) = 7x² + 4 for x ≥ 0
>
Algebra
Permutations and Combinations1
Use the slope-intercept form to graph the equation y = -x + 1.
Use the graphing tool to graph the line. Use the slope and y-intercept when drawing the line.
Click to
enlarge
graph
Algebra
Permutations and CombinationsSolve the absolute value inequality.
|x-2|25
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
OA. The solution set in interval notation is
(Simplify your answer.)
OB. The solution set is Ø.
Algebra
Permutations and CombinationsPerform the indicated operation.
(4x3-10x² +8x-9) - (10x³ - 7x² - 7x+9)
Write the polynomial in standard form.
(4x³-10x² +8x-9) - (10x³ - 7x² - 7x + 9) =
What is the degree of the polynomial?
(Type a whole number.)
Algebra
Permutations and Combinationscoord sy
Find the x- and y-coordinates of the point B.
The coordinates of B are
(Type an ordered pair.)
Algebra
Permutations and CombinationsSolve the absolute value inequality.
|4x-2|<14
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
OA. The solution set in interval notation is
(Simplify your answer.)
B. The solution set is Ø.
Algebra
Permutations and CombinationsSolve the system of equations by the addition method.
-2x+y = -5
8x-4y = 20
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
OA. The solution is
(Simplify your answer. Type an ordered pair.)
OB. There are infinitely many solutions, {(x,y)-2x+y=-5) or ((x,y) |8x-4y=20}.
OC. There is no solution; or Ø.
Algebra
Permutations and Combinations3- Solve the following second order ODE.
xy" -
COS
y' + sin x y = 0, x>0
Algebra
Permutations and CombinationsA group of five friends, which includes a set of non-identical twins, lines up
for a picture. In how many ways can they be arranged if the twins do not
want to stand beside each other?
A
Algebra
Permutations and CombinationsGraph the linear equation.
y=2
CIER
Use the graphing tool to graph the linear equation.
Click to
enlarge
graph
AB
10
10
8-
6
AY
D
4-
10
G
G
D
Algebra
Permutations and CombinationsDetermine whether each ordered pair is a solution of x
Is (0,0) a solution of the given linear equation?
Yes
No
Is (-1,7) a solution of the given linear equation?
O No
OYes
Algebra
Permutations and CombinationsFind the x-and y-coordinates of the point C
The coordinates of Care 0
(Type an ordered pair)
24
2
O Points: 0 of 1
Q
5
Algebra
Permutations and CombinationsPlot the ordered pair (5,5). State in which quadrant or on which axis the point lies.
Plot the ordered pair on the graph to the right.
Algebra
Permutations and CombinationsWrite the number in scientific notation.
85,000
85,000=
(Use the multiplication symbol in the math palette as needed.)
Algebra
Permutations and CombinationsWrite an equation that can be used to solve the problem. Find the solution to the problem. Angles A and B are complementary angles. Determine the measures of
angles A and B if angle A is 14 times the size of angle B.
What is the measure of angle A?
Algebra
Permutations and CombinationsEvaluate the piecewise function at the given values of the independent variable.
g(x) =
(a) g(0)
(b) g(-7)
(c) g(1)
X+4
-(x+4)
(a) g(0) = 4
(b) g(-7)= 3
(c) g(1) =
if x2 - 4
if x < -4
...
Algebra
Permutations and CombinationsFind the degree of the given polynomial and determine whether the polynomial is a monomial, binomial, trinomial, or none of these.
-9x³y4-9x7y+5x4y²
The degree of the polynomial is.
Is -9x5y4-9x7y+5x4y2 a monomial, binomial, trinomial, or none of these?
monomial
binomial
trinomial
none of these
Algebra
Permutations and CombinationsThe length of a rectangle is two more than the width. If the width
c
represented by y, then write an algebraic expression that describes the length.
Algebra
Permutations and CombinationsSolve the equation for y. Write the answer in y=mx+b form.
y+5= -7(x-3)
y= (Use integers or fractions for any numbers in the expression.)
Algebra
Permutations and CombinationsA standard 52-card deck contains four aces, twelve face cards, thirteen hearts (all red), thirteen diamonds (all red), thirteen spades (all black), and thirteen clubs (all black). Of the 20,358.520 different six-card hands possible, decide how many would consist of the following.
a) all diamonds
b) all black cards
c) all aces
Algebra
Permutations and CombinationsEx: Solve the system using elimination.
que
y + 11 = 2x
(4+ 5x + y = 2y +30
Algebra
Permutations and CombinationsFind the slope of the line.
6x + y = 6
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
OA. The slope is
OB. The slope is undefined.
(Simplify your answer. Type an integer or a fraction.)
HI
Algebra
Permutations and Combinationsa) log3√27
log3 27
= 1093 (3³)
1093 39
* 10ga (a)=x +
34
11
7. Evaluate each of the following. Show all steps. (6 marks)
1
b) logs 125
c) log3 √81
=
d) log, 54-log3 6+log3
(
Algebra
Permutations and CombinationsThe leading coefficent of the polynomial f(x) = -(x - 1)² (1 - 2x) (x + 3) is:
a) 2
b) 5
c) 1
d) -1
Algebra
Permutations and CombinationsYou want to determine how many
grams are in 43 mg.
43 mg
?
Which choice goes in the green
box to cancel out mg?
A. 1 mg B. 10-³ g
C. 10³ g