Y = 7/2x + 3 is the slope-intercept form
The frequency of revision times is given by the product of the frequency
density value and the class width.
Correct response:
- The number of students are <u>72 students</u>
<h3>Methods of calculation using a histogram</h3>
The estimate of the number of students who revised for less than 45
minutes is given by the area, <em>A,</em> under the histogram to the left of the 45
minute mark as follows;
Frequency, f = Frequency density × Class width
Number of students = ∑f
Therefore;
A = 5 × 2 + 10 × 2.2 + 20 × 1.6 + 10 × 0.8 = 72
- The number of students that revised for less than 45 minutes = <u>72 </u>students
Learn more about histograms here:
brainly.com/question/17139138
Answer:
Area of rectangular land = 6x² - 28x + 30
Step-by-step explanation:
Given:
Length of rectangular land = 2x - 6
Width of rectangular land = 3x - 5
Find:
Area of rectangular land
Computation:
Area of rectangle = Length × Width
Area of rectangular land = [Length of rectangular land][Width of rectangular land]
Area of rectangular land = [2x - 6][3x - 5]
Area of rectangular land = (2x)(3x) - (2x)(5) - (6)(3x) + (6)(5)
Area of rectangular land = 6x² - 10x - 18x + 30
Area of rectangular land = 6x² - 28x + 30
Answer:
4.5
Step-by-step explanation:
Answer:
200
Step-by-step explanation:
90-35=125
180-125=55
55x4=220
220= 200