Solution: The correct option is d. 8.75
<u>Explanation:</u>
The formula for variance is:
First we need to find the mean of the given data:
Now let's find , please have a look at the attached picture:
Answer: The side of square is 36 cm.
Step-by-step explanation:
Since we have given that
The side of a square is 3 cm smaller than one of the sides of a rectangle and 2 cm greater than its other side. Find the side of the square, if the area of square 30 sq. cm less than the area of rectangle.
Let the side of square be 'x'.
Let the length of rectangle be x+3
Let the breadth of rectangle be x-2
So, Area of rectangle - Area of square = 30
Hence, the side of square is 36 cm.
80 + 4 is the expanded form of 84.
For example, the expanded form of 342 is 300+40+2
Answer:
63.20
Step-by-step explanation:
8362.00
Explanation:
This can be explained by thinking numbers on the number line as:
Lets take we have to multiply a positive number (say, 2) with a negative number say (-3)
<u>2×(-3)</u>
Suppose someone is standing at 0 on the number line and to go to cover -3 , the person moves 3 units in the left hand side. Since, we have to compute for 2×(-3), The person has to cover the same distance twice. At last, he will be standing at -6, which is a negative number.
A image is shown below to represent the same.
<u>Thus, a positive times a negative is a negative number.</u>