Answer:
4
Step-by-step explanation:
Answer:
B. 5 + 7i
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
<u>Algebra II</u>
- Complex Standard Form: a + bi
- Imaginary Numbers
Step-by-step explanation:
<u>Step 1: Define expression</u>
(8 + 9i) + (5 - 9i) - (8 - 7i)
<u>Step 2: Simplify</u>
- Distribute negative: 8 + 9i + 5 - 9i - 8 + 7i
- Combine like terms: 5 + 7i
7 video games were in each case.
Step-by-step explanation:
-So, Ricardo has 2 cases of video games with the same amount of games per case.
-He gives 4 games to his brother and is left off with 10 games.
Add 10+4 to get the total amount of games.
Since there are 2 cases, divide the total amount of games (14) by the total amount of video game cases.
This gets us 7, which is the starting amount of video games in each case.
If you just divide 60 and 15 you will get 4. So 4 is you answer
Answer:
Area = 20.28 cm^2
Perimeter = 16.28 cm
Step-by-step explanation:
The figure is composed of a half circle and a rectangle,
The circle has a diameter of 7 - 2 - 1 = 4cm and the rectangle is of side 2 cm and 7 cm.
Therefore the area is :
Area = A rectangle + Acircle/2 = 2*7 + pi*r^2/2 = 20.28 cm^2
The perimeter is :
Perimiter = 1 + 2 + 7 + Pcircle/2 = 1 + 2 + 7 + 2*pi*r/2 = 16.28 cm
