What type of graph is best to use to show changes over time? a. Bar Graph b. Line Graph c. Histogram d. Circle Graphs

QUESTION POSTED AT 16/01/2020 - 05:42 AM

Answered by admin AT 16/01/2020 - 05:42 AM

The correct answer is B. Line Graph

Post your answer

Related questions

(3y^0 x^2)^6 times y^-3 zx8

Ok so some basic rules

(x^m)(x^n)=x^{m+n}
(ab)^c=(a^c)(b^c)
(x^m)^n=x^{mn}
x^0=1
x^{-m}= \frac{1}{x^m}

so
[(3y^0x^2)^6][y^{-3}zx^8]
[(3(1)x^2)^6][y^{-3}zx^8]
[(3x^2)^6][y^{-3}zx^8]
[(3^6)((x^2)^6)][y^{-3}zx^8]
[(3^6)(x^{12})][y^{-3}zx^8]
(3^6)(x^{12})(y^{-3})(z)(x^8)
(3^6)(x^{12})(x^8)(y^{-3})(z)
(3^6)(x^{20})(\frac{1}{y^3})(z)
\frac{3^6x^{20}z}{y^3}
\frac{729x^{20}z}{y^3}

ANSWERED AT 19/02/2020 - 05:17 PM


QUESTION POSTED AT 19/02/2020 - 05:17 PM

A school sells boxes of cookies each year for a charity fund. The data set shows the number of boxes the 10 families living on Willow Avenue buy, on average, every year. {2, 3, 2, 2, 0, 5, 2, 1, 1, 3} Does this data have negative, positive, or zero skew?

Answer:

This data set has zero skew as it is symmetric.

Step-by-step explanation:

We know that the symmetry exist in a data when the mean, median and mode of the data is same.

i.e. we are given a set of data as:

              {2, 3, 2, 2, 0, 5, 2, 1, 1, 3}

  • On arranging the data in increasing order we get :

    0  1   1   2   2   2   2   3   3   5

Hence, the value that occur in the middle is: 2

Hence, we have Median=2

  • Also, the mean is calculated as follows:

Mean=\dfrac{2+3+2+2+0+5+2+1+1+3}{10}\\\\\\Mean=\dfrac{21}{10}\\\\\\i.e.\\\\\\Mean=2.1

              Hence, Mean=2.1

  • Also, the mode of the data is the most frequently occurring data point in the set.

Here 2 occurs most number of times i.e. 4 times and hence we have:

                   Mode=2

Now, as the Mean, Median and Mode of the data are approximately same.

      Hence, we get the data is symmetric and hence has a zero skew.

ANSWERED AT 19/02/2020 - 04:25 PM


QUESTION POSTED AT 19/02/2020 - 04:25 PM

A line contains the points (82, −96) and (87, −86) . What is the slope of the line in simplified form?

A line contains the points (82, −96) and (87, −86) .What is the slope of the line in simplified form?
Here are the points: (82, −96) and (87, −86) You could let x1=82 and x2=87


ANSWERED AT 19/02/2020 - 04:21 PM


QUESTION POSTED AT 19/02/2020 - 04:21 PM

What is the slope of the line y=3?

The slope is 0
m=0

the line is flat at y=3

ANSWERED AT 19/02/2020 - 03:58 PM


QUESTION POSTED AT 19/02/2020 - 03:58 PM

15 is how many times more than 5? Write the expression not the answer.

Huh well, you can do 5 times x = 15 or 15/5 = x
x is the answer

ANSWERED AT 19/02/2020 - 03:57 PM


QUESTION POSTED AT 19/02/2020 - 03:57 PM

Find the value of "a" for which the graph of the first equation is perpendicular to the graph of the second equation. 1) equation : y=a/3x-6 2) equation 4x+2y=6 Their is the same problems but different equation.1) 3y+ax=8 2)3/4x+2

Perpendicular lines will have negative reciprocal slopes. Example : if u r given a slope of 1/3, to find the negative reciprocal, flip the slope and change the sign. So the negative reciprocal of 1/3 is -3/1 or just -3. So slope 1/3 and slope -3 are perpendicular.
==================
equation 2 : 
4x + 2y = 6
2y = -4x + 6
y = -2x + 3...the slope here is -2....a perpendicular line will have a slope of 1/2.

y = (a/3)x - 6......so we have to make a/3 = 1/2......1.5/3 = 1/2
so a = 1.5
===================
eq. 2 : 3/4x + 2
not sure what the entire equation is.....but it looks to have a slope of 3/4. That means a perpendicular line will have a slope of -4/3.

3y + ax = 9
3y = -ax + 9
y = (-a/3)x + 3.....therefore, a has to be 4


ANSWERED AT 19/02/2020 - 02:18 PM


QUESTION POSTED AT 19/02/2020 - 02:18 PM

How to find an equation of a line when given two points

Using any specific formula or what?

ANSWERED AT 19/02/2020 - 01:41 PM


QUESTION POSTED AT 19/02/2020 - 01:41 PM

A line has a slope of - 4/5. Which ordered pairs could be points on a line that is perpendicular to this line? Check all that apply. a. (-2,0) and (2,5) b. (-4,5) and (4,-5) c. (-3,4) and (2,0) d. (1,-1) and (6,-5) e. (2,-1) and (10,9)

we know that

if two lines are perpendicular

then the product of their slopes is equal to minus one

so

m1*m2=-1

in this problem we have

m1=-\frac{4}{5}

the value of m2 must be equal to

m2=-\frac{1}{m1} =-\frac{1}{(-4/5)}=\frac{5}{4}

we know that

The formula to calculate the slope between two points is equal to

m=\frac{(y2-y1)}{(x2-x1)}

Find the slopes of each of ordered pairs and compare with m2

case a) (-2,0)\ and\ (2,5)

Substitute in the formula

m=\frac{(5-0)}{(2+2)}

m=\frac{(5)}{(4)}

The slope is equal to m2

so

The ordered pair case a)  could be points on a line that is perpendicular to the given  line

case b) (-4,5)\ and\ (4,-5)

Substitute in the formula

m=\frac{(-5-5)}{(4+4)}

m=\frac{(-10)}{(8)}

m=-\frac{5}{4}

The slope is not equal to m2

so

The ordered pair case b)  could not be points on a line that is perpendicular to the given  line

case c) (-3,4)\ and\ (2,0)

Substitute in the formula

m=\frac{(0-4)}{(2+3)}

m=\frac{(-4)}{(5)}

The slope is not equal to m2

so

The ordered pair case c)  could not be points on a line that is perpendicular to the given  line

case d) (1,-1)\ and\ (6,-5)

Substitute in the formula

m=\frac{(-5+1)}{(6-1)}

m=\frac{(-4)}{(5)}

The slope is not equal to m2

so

The ordered pair case d)  could not be points on a line that is perpendicular to the given  line

case e) (2,-1)\ and\ (10,9)

Substitute in the formula

m=\frac{(9+1)}{(10-2)}

m=\frac{(10)}{(8)}

m=\frac{5}{4}

The slope is equal to m2

so

The ordered pair case e)  could be points on a line that is perpendicular to the given  line

therefore

the answer is

(-2,0)\ and\ (2,5)\\(2,-1)\ and\ (10,9)

ANSWERED AT 19/02/2020 - 01:33 PM


QUESTION POSTED AT 19/02/2020 - 01:33 PM

Remember to show work

AB/AC = BD / DC
x/ 36 = 18/24
x = 18x36 / 24
x = 27
AB = 27

ANSWERED AT 19/02/2020 - 01:27 PM


QUESTION POSTED AT 19/02/2020 - 01:27 PM

Which expression shows how to find the number of students that play each instrument. How many students play the clarinet?

8=f/2=answer hope this helps

ANSWERED AT 19/02/2020 - 12:36 PM


QUESTION POSTED AT 19/02/2020 - 12:36 PM

How many times does 4 go into 108

All you need to do is divide:

108/4=27

4 goes into 108, 27 times

Hope this helped!! :)

ANSWERED AT 19/02/2020 - 12:32 PM


QUESTION POSTED AT 19/02/2020 - 12:32 PM

In the figure below, CEF is an equilateral triangle. Points B, C and E are collinear; Points A, C and F are collinear; g = 40 degrees; and k = 45 degrees. Find angle l. Show all work.

There exists the same question with the figure as shown in the attachment.

The given are:
g = 40 degrees
k = 45 degrees

Ask:
angle of " l "

So this is how to solve this:

Step 1:
Since CEF is an equilateral triangle, then each has 60 degrees.
i is equal to l because they are opposite angles

Step 2:
angle l is inside CEF, then the value of angle l is 60

ANSWERED AT 19/02/2020 - 12:21 PM


QUESTION POSTED AT 19/02/2020 - 12:21 PM

The population f(x), in millions, of State A of a country after x years is represented by the function shown below: f(x) = (1.08)x The graph shows the population g(x), in millions, of State B of the country after x years: Graph of function g of x equals 2 multiplied by 1.08 to the power of x Which conclusion is correct about the population of State A and State B? The original population of State B was half of the original population of State A. The original population of State A was half of the original population of State B. The original population of State B was one-fourth of the original population of State A. The original population of State A was one-fourth of the original population of State B.

-- State-A . . . Population = 1 · (1.08)ˣ

-- State-B . . . Population = 2 · (1.08)ˣ

' x ' = number of years after the original population
At the beginning, x=0.
Any quantity raised to the zero power = 1.
At the beginning, when x=0, the original populations were
       State-A  =  1 · 1  =  1
       State-B  =  2 · 1  =  2

The original population of State A was half of
the original population of State B.


ANSWERED AT 19/02/2020 - 11:53 AM


QUESTION POSTED AT 19/02/2020 - 11:53 AM

During a sale, The price of a sweater was changed from $20 to $16. What was the percent of the decrease in the price of the sweater? (Please show work:) )

$16/$20 = x%/100% (in a proportion)

Cross-multiply

1600 = 20x

Divide 1600 by 20

x = 80

80%/100%

Because you know the price decreased, you subtract 80 from 100 to find your answer

100 - 80 = 20% decrease in price

Hope this helps!

ANSWERED AT 19/02/2020 - 10:31 AM


QUESTION POSTED AT 19/02/2020 - 10:31 AM

Hannah practiced the violin for 5 hours over the weekend .She practiced 3/4 of this time on saturday.how many hours did Hannah practice

Hannah spends a total of 5 hours on the weekend practicing the violin. And on Saturday, she practiced 3/4 of that allotted time. 

3/4 * 5 = 15/4 = 3 3/4

So, she spent 3 3/4 hours on Saturday.

ANSWERED AT 19/02/2020 - 09:56 AM


QUESTION POSTED AT 19/02/2020 - 09:56 AM

What is the slope of the line that passes through (-4,2) and (-1,-2)? Give your answer as a fraction

-2/3 would be the answer. Calculate the differences or graph and find the slope! 

ANSWERED AT 19/02/2020 - 09:21 AM


QUESTION POSTED AT 19/02/2020 - 09:21 AM

Write an equation point slope form for the line that goes through the given point with the given slope. (-4,-2);m=-1/2

Y - y1 = m(x - x1)
slope(m) = -1/2
(-4,-2)...x1 = -4 and y1 = -2
now we sub
y - (-2) = -1/2(x - (-4) =
y + 2 = -1/2(x + 4) <=====

ANSWERED AT 19/02/2020 - 01:12 AM


QUESTION POSTED AT 19/02/2020 - 01:12 AM

How would you graph this linear equation x-5=0

First thing you should realize is that the only variable is x. Isolate x by adding 5 to both sides. This should give you

x = 5

This should have a line drawn straight down on the x-axis at x = 5
Hopes this helps :D

ANSWERED AT 19/02/2020 - 01:04 AM


QUESTION POSTED AT 19/02/2020 - 01:04 AM

A coin is tossed and a number cube a rolled. What is the probablity that the coin shows tails and the die shows a 1 or a 2 ?

The sample space for this event is {H1,H2,H3,H4,H5,H6,T1,T2,T3,T4,T5,T6}
There are 12 possibilities.
The probability that we get a T1 or T2 is 2/12 or 1/6.

ANSWERED AT 19/02/2020 - 01:01 AM


QUESTION POSTED AT 19/02/2020 - 01:01 AM

Which is an equation in a slope intercept form for the line passing through (5,1) and (-4,7) A: y=-2/3x+13/3 B: y=-2/3x-13/3 C: y=2/3x-13/3 D: y=2/3x+13/3

The answer is A.
tbch i plugged them into a graphing calculator... ,:D too tired atm

ANSWERED AT 19/02/2020 - 01:00 AM


QUESTION POSTED AT 19/02/2020 - 01:00 AM

The table below shows some input and output values for a function named F(n). Which of the following equations describes F(n)?

The equation in choice-'C' describes F(n).

ANSWERED AT 19/02/2020 - 12:59 AM


QUESTION POSTED AT 19/02/2020 - 12:59 AM

I need help finding q'(7) where q(x) = f(x)/g(x) because: F is a zig zag line and at x = 7 the coordinates are: (7,5) however the slope is negative on the left and positive on the right so I can't use your regular slope form to figure out how to find the derivative. g(x)'s slope is .5 at the point, where the point is equal to (7, 2.5).

Remember the difference quotient
the deritivie of f(x)/g(x) is  \frac{f'(x)g(x)-g'(x)f(x)}{(g(x))^2}
so
q'(7)= \frac{f'(7)g(7)-g'(7)f(7)}{(g(7))^2}
g(7)=2.5
g'(7)=0.5
f(7)=5
so
q'(7)= \frac{f'(7)(2.5)-(0.5)(5)}{2.5^2}
q'(7)= \frac{f'(7)(2.5)-2.5}{6.25}
now find the slope of f(x) at x=7
take the deritive and evaluate
(try googling a deritive calculator)
or just ask me

basically
the answer is  \frac{f'(7)(2.5)-2.5}{6.25}
just find the slope of f(x) at x=7 (that is the slope at that specitific point, not for the whole graph)

ANSWERED AT 19/02/2020 - 12:58 AM


QUESTION POSTED AT 19/02/2020 - 12:58 AM

What is 2 times 2I need help

2 × 2 is 4 count by 2's 2,4,6,8,10 hold up to fingers go 2,4 the anwser is 4

ANSWERED AT 19/02/2020 - 12:57 AM


QUESTION POSTED AT 19/02/2020 - 12:57 AM

How does the graph of y = sqrt(x) + 2 compare to the graph of the parent square root function

To move te function up z units, add zto the whole equation

from
y=sqrt(x) to
y=sqrt(x)+2

parenth function moved up 2 units
my hands are cold so I don't type well

ANSWERED AT 19/02/2020 - 12:55 AM


QUESTION POSTED AT 19/02/2020 - 12:55 AM

What is the elapsed time for 11:59a.m. to 1:01p.m.?

11:59 a.m to 12:59 p.m. = 13 hrs....and 12:59 p.m to 1:01 p.m = 2 minutes....so the elapsed time is 13 hrs and 2 minutes

ANSWERED AT 19/02/2020 - 12:42 AM


QUESTION POSTED AT 19/02/2020 - 12:42 AM

What is the circumference of a circle with a radius of 56 ?

circumference =2(pi)r=(pi)d
use this formula. 
2*(pi)*56=351.85

ANSWERED AT 19/02/2020 - 12:41 AM


QUESTION POSTED AT 19/02/2020 - 12:41 AM