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8_murik_8 [283]
3 years ago
14

Help ASAP!!! Create your own scatter plot that represents a real world situation. Then, draw a line of best fit and calculate th

e slope and y-intercept of your line. Last, write an equation for your line in y = mx + b form. This is my final grade of the year and I can't do any math plaese help me!! AND PLS DO A GOOD JOBBBB
Mathematics
1 answer:
Margaret [11]3 years ago
8 0

Answer:

A student had a hypothesis for a science project. He believed that the more students studied math, the better their math scores would be. He took a poll in which he asked students the average number of hours that they studied per week during a given semester. He then found out the overall percent that they received in their math classes. His data is shown in the table below:

Study Time (hours) 4 3.5 5 2 3 6.5 0.5 3.5 4.5 5 1 1.5 3 5.5

Math Grade (percent) 82 81 90 74 77 97 51 78 86 88 62 75 70 90

In order to understand this data, he decided to make a scatterplot.

The independent variable, or input data, is the study time because the hypothesis is that the math grade depends on the study time. That means that the math grade is the dependent variable, or output data. The input data is on the x-axis and the output data is on the y-axis.

The scales and intervals on the axes will be determined by the data. Since the greatest value on the x-axis is 6.5, you can use intervals of 1 until you reach 7. On the y-axis, the greatest value is 97 and, since it is a percent, you can use intervals of 10 until you reach 100.

Step-by-step explanation:

Now you can graph the points on the scatterplot. In order to plot the points, you will show each one as an ordered pair (hours, percent). The first ordered pair, then, is (4, 82). Plot each of the 14 points. Remember, it takes two pieces of data to make a single point.

You can see that there is a relationship between the independent and dependent values of the chart.

Scientists in the real world rarely create scatterplots on a piece of paper and compute equations by hand. They use computer programs that can approximate the trend line much more accurately.

You can make scatterplots on your graphing calculator, if you have one. Then, you can compute the trend line called the linear regression in some models. Your graphing calculator can put the equation in y=mx+b form or Ax+By=C form, depending on the mode you choose. Then, you can choose any input values for which your calculator will tell you the output values.

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ioda

Answer:

(2,2) is your answer :)

Step-by-step explanation:

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3 years ago
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lubasha [3.4K]

x=0 or x=4

just factorize basically

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3 years ago
Bryan is buying notebooks and pens at an office supply store. Notebooks cost $3.59 and pens cost $1.49. He can spend up to $13 o
romanna [79]

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Step-by-step explanation:

3 0
3 years ago
How do you simplify Radicals?<br>√180v^4​
julsineya [31]

Here are the steps required for Simplifying Radicals:

Step 1: Find the prime factorization of the number inside the radical. Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder. Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers. Also factor any variables inside the radical.

Step 2: Determine the index of the radical. The index tells you how many of a kind you need to put together to be able to move that number or variable from inside the radical to outside the radical. For example, if the index is 2 (a square root), then you need two of a kind to move from inside the radical to outside the radical. If the index is 3 (a cube root), then you need three of a kind to move from inside the radical to outside the radical.

Step 3: Move each group of numbers or variables from inside the radical to outside the radical. If there are nor enough numbers or variables to make a group of two, three, or whatever is needed, then leave those numbers or variables inside the radical. Notice that each group of numbers or variables gets written once when they move outside the radical because they are now one group.

Step 4: Simplify the expressions both inside and outside the radical by multiplying. Multiply all numbers and variables inside the radical together. Multiply all numbers and variables outside the radical together.

Shorter version:

Step 1: Find the prime factorization of the number inside the radical.  

Step 2: Determine the index of the radical. In this case, the index is two because it is a square root, which means we need two of a kind.  

Step 3: Move each group of numbers or variables from inside the radical to outside the radical. In this case, the pair of 2’s and 3’s moved outside the radical.  

Step 4: Simplify the expressions both inside and outside the radical by multiplying.

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3 years ago
When a die is rolled what is the probability of rolling a 2 or a 5?
Travka [436]
\dfrac{1}{6}+\dfrac{1}{6}=\dfrac{2}{6}=\dfrac{1}{3}
4 0
3 years ago
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