Answer:

Step-by-step explanation:
Given: tape diagram
To find: an equation to represent the image
Solution:
In the image, the area of the tape diagram indicating 1.75 is equal to the sum of areas of all the five parts in the diagram such that each part indicates n.
So, according to the given information, the equation is
.
Here, we have assumed that 1.75 represents an area of the first rectangle, and n represents the area of each of the small rectangle.
3/4 and 1/3
4x3 = 12 that will be the common denominator.
For 3/4 we first divide 12/4 = 3 and then multiply 3 x3 = 9 that's the numerator
For 1/3 we first divide 12/3 = 4 and then multiply 1x4 = 4 that's the numerator
The fractions will be rewrited as: 9/12 and 4/12
13 students only have tablets and 9 of them have non of the two so the answer is 22