To answer the calculation 1/2 + 3/4, you need to do the following:
1/2 + 3/4 =
2/4 + 3/4 =
(2 + 3) / 4 =
5/4 This can be also written as

.
Given:
6 | 1 means a score of 61.
The scores of the students from the stem-and-leave are
61, 62, 63, 71, 73, 75, 77, 78, 78, 79, 82, 82, 84, 85, 89, 95, 96, and 99.
Required:
We need to find the lowest score in the 80s, the highest score overall, and the number of students who scored in the 70s.
Explanation:
The scores in the 80s are
82, 82, 84, 85, and 89.
The smallest score is 82.
The lowest score in the 80s is 82.
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To solve the problem we will put the values given to us in the formula of volume of a prism.
<h2>Prism</h2>
A prism is a 3d shape whose two sides are the base sides which are polygon, with the other faces as parallelograms.
The height of the prism is
.
<h2>Explanation</h2>
Given to us
- volume of a rectangular prism = (x3 – 3x2 5x – 3),
- area of its base = (x2 – 2)
- the volume of a rectangular prism is the product of its base area and height,
As given to us,


Substituting the values we get,

Hence, the height of the prism is
.
Learn more about Volume of Prism:
brainly.com/question/1578538
Answer:
The answer to the question provided is

Step-by-step explanation:
x =7-y
subs x in eqn 2
3(7-y)+y=15
21-3y+y=15
21-2y=15
21-15=2y
6=2y
y=6/2
y=3