If you have an average of 97.2 on your current exam and you get a 99 on your next exam, your average will increase.
- Mean in mathematics is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the total number of values.
- To find the average, sum all the values in the set. Then divide the total by the number of values.
We have the current examination mean, xold = 97.2
Now, we receive, x = 99 on the next examination, the new mean will be:
xnew = (xold + x)/N
xnew = (97.2+99)/2
xnew = 196.2/2
xnew = 98.1
The new average is 98.1
98.1 > 97.2
So if you score 99 on your next exam, your average will increase.
Learn more about mean here
brainly.com/question/1136789
#SPJ4
the length of YZ that is rounded to 3 significant figures using XY = 3.2cm. XZ = 1.7cm is 1.50 cm
Explanation :
Given : XY = 3.2cm. XZ = 1.7cm.
We need to calculate the length of YZ
From the given information we can see that Z lies between X and Y
So we add XZ and ZY to get XY
Substitute the given values and solve for YZ
Round the answer to 3 significant figures.
After rounding to 3 significant figures , the length of YZ=1.50 cm
Learn more : brainly.com/question/18066721
The subtraction of the given expression will be (x²-9x +1).
<h3>What is subtraction?</h3>
The method of removing or deleting anything from the given set will be defined as subtraction. It is represented by the negative sign '-'.
The subtraction will be calculated as:-
E = (–3x² + 7 – 2x) – (6 + 7x – 4x²)
Arrange the terms in the above expression.
E = ( -3x²+4x²-2x-7x-6+7)
E = ( x² - 9x + 1 )
Therefore the subtraction of the given expression will be (x²-9x +1).
To know more about subtraction follow
brainly.com/question/4721701
#SPJ1
Answer: ufhbequfbhqeyfbyhadbye
Step-by-step explanation:
Dilation of 3. Just count the squares... the smaller one has 3 squares and the larger has 9.