So first you add 8 and 2 to get 10. This means that Kevin is 10 years old now. If he is currently twice as old as his brother it means that you divide 10 by 2 to get 5. Kevin's brother is 5 years old.
Answer: 5 years old
•divide both sides by 3
•take the square root of both sides
•subtract 2 from both sides
(used the Khan academy hints so this is 100% correct)
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:
The standard for of the equation would be 2x + 3y = 3
Step-by-step explanation:
To start, we simply need to solve for the constant.
y + 1 = 2/3(x + 3)
y + 1 = 2/3x + 2
2/3x + y + 1 = 2
2/3x + y = 1
Now we need to multiply all the numbers by the largest denominator. This will make all the numbers integers. In this case, that number would be 3.
2x + 3y = 3
Answer:
Something to raise the moist air to form the clouds and cause precipitation. An example of lift is warm air colliding with cold air and being forced to rise over the cold dome. The boundary between the warm and cold air masses is called a front.
Step-by-step explanation:
