Answer:
Step-by-step explanation:
The interior angles of a heptagon add up to 5*180 = 900
So
x + 143 + 116 + 135 + 135 + 116 + 155 = 900 Add up the known angles
x + 800 = 900 Subtract 800 from both sides
x + 800 - 800 = 900 - 800 Combine
x = 100
Answer:
28
Step-by-step explanation:
You multiply 7 and 8, and then divide it by two.
Hi all! ❤
I know this answer is late, so for anyone in the future, I am 100% positive about these answers, I just took the quiz. So here they are...
The graph has a y-intercept only.
The point (0, 2.40) is on the graph.
The graph increases from left to right.
Hope this helps someone baiii ❤
Answer:
87.8
Step-by-step explanation:
I assume you know how to do this so I didn't show any steps. Have a nice night. :)
Answer:
-3b³ - 5b² + 10b
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define Expression</u>
(10b + 7b² - 6b³) - (12b² - 3b³)
<u>Step 2: Simplify</u>
- Distribute negative: 10b + 7b² - 6b³ - 12b² + 3b³
- Combine like terms (b³): -3b³ + 10b + 7b² - 12b²
- Combine like terms (b²): -3b³ - 5b² + 10b