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2 years ago

11

How are dot plots, bar graphs, and histograms used to analyze data?

1 answer:

cestrela7 [59]2 years ago

7 0

<span>Dot plots, bar graphs, and histograms are visual representations of data. They present data in a way that makes it easier to analyze and compare data. They allow understanding data with ease by visually showing relations, trends and other useful data</span>

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Solve the system of equations below by graphing. x^2-2x+y-3=0 x2+y=0 What is the solution rounded to the nearest hundredth? (–2.

Olin [163]

Answer:

$(-1.5,-2.25)$

Step-by-step explanation:

The first function is $x^2-2x+y-3=0$ .

We make y the subject of this function to obtain,

$y=3+2x-x^2$ .

This is graph will open downwards because $a=-1\:$ .

At y-intercept of this graph, $x=0$ .

$\Rightarrow y=3+2(0)-(0)^2$

$\Rightarrow y=3$

The y-intercept is $(0,3)$ .

At x-intercept $y=0$ .

$0=3+2x-x^2$

$0=(x+1)(x-3)$

$\Rightarrow x=-1,x=3$ .

The x-intercepts are,

$(-1,0),(3,0)$

Also the vertex form of the function is,

$y=-(x-1)^2+4$ .

Therefore the vertex of the parabola is $(1,4)$ .

We plot all the points obtained and draw a smooth curve to obtain the curve as show in the diagram.

The second function is

$x^2+y=0$

$\Rightarrow y=-x^2$

This is the graph of the basic quadratic function $y=x^2$ that has been turned upside down.

This graph also has the vertex,y-intercept and x-intercept all at $(0,0)$ .

We now graph this too on the same graph sheet as the first one to obtain the blue graph as shown in the diagram.

These two graphs intersect at the point, $(-1.5,-2.25)$ .

Therefore the correct answer is B

3 0

2 years ago

Johnson middle school had 240 students last year. This year. There are 192 students. Find the percent of change. State whether t

Rina8888 [55]

Answer:

Step-by-step explanation:

192 ÷ 420 = 0.457

0.457 x 100 = 45.7

But there can't be a percentage increase or decrease because there is no percentage to compare it to, there should be information for the change in students of the last year

7 0

3 years ago

What is 10.833333333 as a mixed number

Angelina_Jolie [31]

The answer is 10 4/5

8 0

2 years ago

Answer this question to get marked as brainliest!!!!!

timurjin [86]

(15^3)^3

the rest are equal to 15^6:)

4 0

2 years ago

Please help I don’t think I remember this

nikdorinn [45]

Answer:

im not sure if this is right

Step-by-step explanation:

demension 1: 9 X 10 demension 2: 10 x 4

4 0

2 years ago

Read 2 more answers