14 because it’s the distance between -14 and 0
18m^2
area of a trapezoid = (a+b)/2 * h, where a and b are bases 1 and 2, and h is height
(4+8)/2 * 3
= 12/2 * 3
= 6 * 3
= 18
So first you would take 20% of 30 which would be set of as .2 x 30 which equals 6. So your answer would be 6 students
Answer:
B. 84 ft²
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Geometry</u>
Area of a Rectangle Formula: A = lw
- <em>l</em> is length
- <em>w </em>is width
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify variables</em>
<em>l</em> = 14 ft
<em>w</em> = 6 ft
<u>Step 2: Find Area</u>
- Substitute in variables [Area of a Rectangle Formula]: A = (14 ft)(6 ft)
- Multiply: A = 84 ft²
At the beginning, the chances that the teacher will choose a student who has forgotten his lunch are 2/10, or 1/5.
If the teacher now chooses another student from the remaining 9 students, the chances of his choosing a student who has forgotten his lunch are 1/9, since one of the forgetful students has already been removed from the original group of 10 students, and there are only 9 in the group remaining.
The probability that both students forgot lunch is (1/5)(1/9), or 1/45.