Answer:
Part A
This equation is given as
180° = ∠A + ∠B
180° = (2x+5)° + (4x+25)°
Part B
The value of x = 25°
Step-by-step explanation:
We are told in the question that:
Angles A and B are adjacent angles and are supplementary. The measure of ∠A is (2x+5)∘ and the measure of ∠B is (4x+25)∘.
Question 1 Part A Write an equation that can be used to determine the value of x.
Two angles are called supplementary when their measures add up to 180 degrees.
This equation is given as
180° = ∠A + ∠B
180° = (2x+5)° + (4x+25)°
Part B
Solving the equation
180° = (2x+5)° + (4x+25)°
180° = 2x + 5 + 4x + 25
180° = 6x + 30
Collect like terms
180° - 30° = 6x
150° = 6x
x = 150/6
x = 25°
Enter the correct answer in the box.
Answer:
Step-by-step explanation:
(4.5 · 10^7)(5.8 · 10^1)
(4.5 · 10,000,000)(5.8 · 10)
(45,000,000)(58)
2,610,000,000
2.61 · 10^9
Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra II</u>
- Distance Formula:
Step-by-step explanation:
<u>Step 1: Define</u>
Point (-6, -5)
Point (2, 0)
<u>Step 2: Find distance </u><em><u>d</u></em>
Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>
- Substitute [DF]:
- Add:
- Exponents:
- Add:
Answer: D). This was a cross-sectional cohort study
Step-by-step explanation:
The given situation is an example of cross sectional cohort study because the investigator choose the samples from the population using cross sectional method and use the same sample source for analyzing the independent variables for specific period of time or intervals of time to assess the history of exposures and outcomes.
Here, the lung function is tested at an interval of 7 years compared with the levels of exposure to the coal ash so it is the example of cross sectional cohort study.
X = 6 , y = -2
hope this helps