Questions posted in Mathematics - AssignmentGrade.com

Questions posted in Mathematics

The sides of a ladder are parallel. since the rungs are perpendicular to one side of the ladder, what conclusion can be made?

1. They are also perpendicular to the other side of the ladder.
2. All angles are 90°.
3. All rungs are the same length.

ANSWERED AT 02/06/2020 - 02:02 AM


QUESTION POSTED AT 02/06/2020 - 02:02 AM

The first electronic stock market is known as: A. Standard and Poor B. NYSE C. NASDAQ D. Dow Jones

c  Nasdaq
was the first

ANSWERED AT 02/06/2020 - 02:02 AM


QUESTION POSTED AT 02/06/2020 - 02:02 AM

A pyramid has a square base with 8 sides and a slant height of 5

If you want the area, it would be around 166.45


ANSWERED AT 02/06/2020 - 02:02 AM


QUESTION POSTED AT 02/06/2020 - 02:02 AM

A tire rim has a diameter of 15 in. What is the circumference of the tire rim? Use 3.14 for .

C = 2 * (3.14) * r
C = 2 * (3.14) * 7.5      (remember radius is half of the diameter)
C = 47.12

hope you understood

ANSWERED AT 02/06/2020 - 02:01 AM


QUESTION POSTED AT 02/06/2020 - 02:01 AM

The solution to the given system of linear equations lies in which quadrant? x-3y=6 x+y=2

X - 3y = 6
x + y = 2 ....multiply by -1
------------
x - 3y = 6
-x - y = -2 (result of multiplying by -1
------------
-4y= 4
y = -4/4
y = -1

x - 3y = 6
x - 3(-1) = 6
x + 3 = 6
x = 6 - 3
x = 3

solution is (3,-1)

Quadrant IV contains points (+,-)......so ur points fall in quadrant 4

ANSWERED AT 02/06/2020 - 01:57 AM


QUESTION POSTED AT 02/06/2020 - 01:57 AM

What is the least number that rounds up to 300 when rounding to the nearest hundred?

Once you get to "5" you start rounding up, so the least would be 250.

ANSWERED AT 02/06/2020 - 01:56 AM


QUESTION POSTED AT 02/06/2020 - 01:56 AM

Four circles, each with a radius of 2 inches, are removed from a square. What is the remaining area of the square? (16 – 4π) in.2 (16 – π) in.2 (64 – 16π) in.2 (64 – 4π) in.2

Because each circle has radius = 2 in, each side of the square is 4*2 = 8 in.
The area of the square is 8^2 = 64 in^2

The area of one circle is π*2^2 = 4π in^2
The area of 4 circles is  4*(4π) = 16 in^2

The remaining area of the square is
(64 - 16π) in^2

ANSWERED AT 02/06/2020 - 01:54 AM


QUESTION POSTED AT 02/06/2020 - 01:54 AM

A snack cart sells lemonade for 2$ And hot dogs for 5$. The vendor sold 86 items today for a total of 330$ which equation is true?

L = # of lemodades and H = # of hotdogs
2L + 5H = 330.....thats true
L + H = 86.....thats true

ANSWERED AT 02/06/2020 - 01:53 AM


QUESTION POSTED AT 02/06/2020 - 01:53 AM

Which statement is an example of a transitive relationship

From looking at Mdasia55's question (yours but with answers), I can say that I personally think it is c... sorry if its not correct. Hope it helps!

ANSWERED AT 02/06/2020 - 01:53 AM


QUESTION POSTED AT 02/06/2020 - 01:53 AM

Please help!!! How many coefficients does this polynomial have in its complete form, including any missing terms?

-5x^3 + 2x^2 + 1

a coefficient is the number that is multiplied by the variable.For instance, the coefficient of 2x is 2....because 2 (the number) is multiplied by the variable x.

so in ur problem....there are 2 coefficients..-5 and 2.

** the number 1 is not a coefficient, it is a constant...a " loner " with no variables (letters) attached.

** and if u have just the letter...such as n, the coefficient to that is 1 but the one is just not written...it is actually 1n.

okay...I am gonna shut up now :) 

ANSWERED AT 02/06/2020 - 01:53 AM


QUESTION POSTED AT 02/06/2020 - 01:53 AM

Part A: Billy rented a canoe at $14 for 2 hours. If he rents the same canoe for 5 hours, he has to pay a total rent of $29. Write an equation in the standard form to represent the total rent (y) that Billy has to pay for renting the canoe for x hours. (4 points) Part B: Write the equation obtained in Part A using function notation. (2 points) Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points) Part A: Ax By= C

The function in the slope - intercept form:
y = m x + b    It passes through the points ( 2, 14 ) and ( 5, 29 ).
14 = 2 m + b
29 = 5 m + b
-------------------
b = 14 - 2 m
29 = 5 m + 14 - 2 m
29 - 14 - 5 m - 2 m
15 = 3 m
m = 15 : 3
m = 5
b = 14 - 10
b = 4
Part A: y = 5 x + 4
or: 5 x - y = 4  ( in form: Ax + By = C )
Part B :
f ( x ) = 5 x + 4
Part C :
When y = 0
5 x + 4 - 0
5 x = - 4
x = - 4 : 5
x = - 0.8
When x = 0
y = 4.
x - intercept is - 0.8 and y-intercept is y = 4. After that you can graph the function.
For the interval x ∈ ( - ∞, - 0.8 ) the function is negative and for x ∈ ( - 0.8, +∞ ) it is positive. 



ANSWERED AT 02/06/2020 - 01:53 AM


QUESTION POSTED AT 02/06/2020 - 01:53 AM

A tree casts a 9 ft shadow at the same time that a person 6 ft tall casts a 4 ft shadow. what is the height of the tree?

The height of the tree is 13.5 feet tall.

ANSWERED AT 02/06/2020 - 01:48 AM


QUESTION POSTED AT 02/06/2020 - 01:48 AM

How are the algebraic properties used in creating equivalent systems

If in a system, an equation is replaced by another equation that is obtained from adding the two equations from a system previously multiplied or divided by a nonzero number, the resultant system is equivalent.

ANSWERED AT 02/06/2020 - 01:47 AM


QUESTION POSTED AT 02/06/2020 - 01:47 AM

Part A: Billy rented a canoe at $14 for 2 hours. If he rents the same canoe for 5 hours, he has to pay a total rent of $29. Write an equation in the standard form to represent the total rent (y) that Billy has to pay for renting the canoe for x hours. (4 points) Part B: Write the equation obtained in Part A using function notation. (2 points) Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points) Part A: Ax By= C

Part A)

So we need the graph to pass through these points:

time = 2 and price=$14 -> (2,14)

time= 5 and price = $29 -> (5,29)

Standard form:

Ax+By = C

Let’s replace the points:

A*2+B*14=C

A*5+B*29=C

Let’s eliminate variables:

(A*2+B*14)-(A*5+B*29)=C-C

A*2+B*14-A*5-B*29=0

-3A-15B=0

-3A=15B

A=15B/-3

A=-5B

There are several numbers that verify this proportion. For example, if B=1, A=-5 (you can try others, there is not only 1 correct answer).

So we can make this equation:

-5x+y=C

Then we can calculate C using one point:

-5*2+14=C

-10+14=C

4=C

So one of the possible equations is: -5x+y=4

(Remember there are multiple correct answers for this item)

You can verify it with the other point:

-5*5+29=-25+29=4 ->OK

 

Part B)

Whatever you have found in Part A, you will find the same in Part B when you convert it to function notation. All you have to do is clear y:

-5x+y=4

y=4+5x

So the equation is: f(x)=4+5x


Part C)

First of all, you have to find f(0)

f(x)=4+5x

f(0) =4+5*0=4+0=0

f(0) is ALWAYS the constant not multiplied by x.

So you know it has to cross the y axes in y=4

Now let’s put 0 as y-value:

4+5x=0

5x=0-4=-4

x=-4/5

So now you know it has to cross the x axes in x=-4/5.

So you can put those intersections in the graph and you draw the line through those points. Labels: horizontal axes is x, and in this case represents time; vertical axes is y, and in this case represents price.

Remember there are other methods, too :)

ANSWERED AT 02/06/2020 - 01:47 AM


QUESTION POSTED AT 02/06/2020 - 01:47 AM

Which factors positively affect lifetime income? Check all that apply. post-secondary education employee benefits salary vocational training throughout career high cost of living early retirement

Following factors positively affect lifetime income:
post-secondary education - having additional education is always a plus, because it gives you more possibilities to work and to improve your income, 
- employee benefits -
- salary : the bigger the salary the bigger the pension



ANSWERED AT 02/06/2020 - 01:43 AM


QUESTION POSTED AT 02/06/2020 - 01:43 AM

Antoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00. Tess says, “It is easy to find 10% of 46 by moving the decimal point one place to the left to get $4.60. Do that twice. Then add the two amounts to get $4.60 + $4.60 = $9.20 for the 15% gratuity.” How should Antoine respond to Tess’s method?

How would Antonio respond....she would say " u stupid ".

Tess is right about it being easy to find 10% of 46 by moving the decimal point 1 place to the left to get 4.60.....but there is no need to do that twice....because if u do 10% twice, ur doing 20%.
okay....once u get 10% of 46 = 4.60....then u figure 5% of 46 = (0.05(46) = 2.30....because 10% + 5% = 15%.....then u add those together.....4.60 + 2.30 = 6.90. This can easily be checked...15% of 46 = 0.15(46) = 6.9 ,just like 10% of 46 + 5% of 46 = 6.9

ANSWERED AT 02/06/2020 - 01:43 AM


QUESTION POSTED AT 02/06/2020 - 01:43 AM

What is the solution to the system of equations? y = –5x + 3 y = 1 (0.4, 1) (0.8, 1) (1, 0.4) (1, 0.8)

i think that it may be (041)


ANSWERED AT 02/06/2020 - 01:43 AM


QUESTION POSTED AT 02/06/2020 - 01:43 AM

The graph below shows four straight lines, W, X, Y, and Z: Graph of line W going through ordered pairs negative 4, negative 2 and negative 1, 5. Graph of line X going through ordered pairs negative 2, negative 1 and 0, 5. Graph of line Y going through ordered pairs negative 1, negative 3 and 1, 3. Graph of line Z going through ordered pairs 0, negative 5 and 2, 1. Which line is represented by the function f(x) = 3x + 5?

Given:
Graph of line W going through ordered pairs negative 4, negative 2 and negative 1, 5.
Graph of line X going through ordered pairs negative 2, negative 1 and 0, 5.
Graph of line Y going through ordered pairs negative 1, negative 3 and 1, 3.
Graph of line Z going through ordered pairs 0, negative 5 and 2, 1

Slope formula: m = y2-y1 / x2 - x1
mW = 5 - (-2) / -1 - (-4) = 5 + 2 / -1+ 4 = 7 / 3 = 2 1/3
mX = 5 - (-1) / 0 - (-2) = 5 + 1 / + 2 = 6 / 2 = 3
mY = 3 - (-3) / 1 - (-1) = 3 + 3 / 1 + 1 = 6 / 2 = 3
mZ = 1 - (-5) / 2 - 0 = 1 + 5 / 2 = 6 /2 = 3

f(x) = 3x + 5
X: 
negative 2, negative 1 and 0, 5
f(-2) = 3(-2) + 5 = -6 + 5 = -1
f(0) = 3(0) + 5 = 0 + 5 = 5

Y: 
negative 1, negative 3 and 1, 3
f(-1) = 3(-1) + 5 = -3 + 5 = 2  
≠ -3
f(1) = 3(1) + 5 = 3 + 5 = 8 
≠ 3

Z: 0, negative 5 and 2, 1
f(0) = 3(0) + 5 = 0 + 5 = 5 
≠ -5
f(2) = 3(2) + 5 = 6 + 5 = 11 ≠ 1


LINE X is represented by the function f(x) = 3x + 5

ANSWERED AT 02/06/2020 - 01:43 AM


QUESTION POSTED AT 02/06/2020 - 01:43 AM

The expression 3 × 7 – 4 × 8 + 2 is equivalent

I believe the answer you are looking for is -9

ANSWERED AT 02/06/2020 - 01:42 AM


QUESTION POSTED AT 02/06/2020 - 01:42 AM

The perimeter of a rectangle is 200 yards. what are the dimensions of the rectangle if the length is 80 yards more than the? width?

P = 2(L + W)
P = 200
L = W + 80

200 = 2(W + 80 + W)
200 = 2(2W + 80)
200 = 4W + 160
200 - 160 = 4W
40 = 4W
40/4 = W
10 = W.........the width is 10 yds

ANSWERED AT 02/06/2020 - 01:41 AM


QUESTION POSTED AT 02/06/2020 - 01:41 AM

What symbol is used for the standard deviation when it is a sample statistic? what symbol is used for the standard deviation when it is a population parameter?

You use the lower case letter s for the sample standard deviation

You use the greek letter sigma (written as \sigma) for the population standard deviation

ANSWERED AT 02/06/2020 - 01:41 AM


QUESTION POSTED AT 02/06/2020 - 01:41 AM

Is the data set “the number of leaves on a branch” quantitative or qualitative? If it is quantitative, is it discrete or continuous?

It is quantitive and from that, I'm pretty sure it's discreet, sorry if the second part isn't very helpful.

ANSWERED AT 02/06/2020 - 01:41 AM


QUESTION POSTED AT 02/06/2020 - 01:41 AM

Help me answer this thanks

The first fourth and sixth would be the answer

ANSWERED AT 02/06/2020 - 01:40 AM


QUESTION POSTED AT 02/06/2020 - 01:40 AM

Which value of x is in the solution set of 2(3x-1)≥4x-6

The value of x is -2

ANSWERED AT 02/06/2020 - 01:40 AM


QUESTION POSTED AT 02/06/2020 - 01:40 AM