They are absolutely right
Answer:
r=20
Step-by-step explanation:
since the angle and sum of a straight line is equal to 180, you structure an equation:
180=105+(4r-5)
solve for r
180=100+4r
80=4r
20=r
check answer
4r-5 4(20)-5
80-5
75+105=180
The domain the function is 
.
In interval notation: [7, ∞).
The range of the function is in the interval (1, ∞).
The given function is 
.
The domain is x ≥ and the range is y ≥.
<h3>What is a function?</h3>
A technical definition of a function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Now, 
⇒
Therefore, the domain the function is
The range of the function is the set of all values of y when we substitute the values of x.
Now, for 
So, the value of y in the interval (1, ∞).
Therefore, the range of the function is in the interval (1, ∞).
To learn more about functions visit:
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Answer:
1380 households in Gettysburg are likely interested in using lawn care services
Step-by-step explanation:
To solve this question, we find the sample proportion and estimate for the entire population.
Sample proportion of households in Gettysburg that are likely to be interested in using lawn care services?
92 of 92 + 51 + 17 = 160 households.
92/160 = 0.575
Based on his results, how many households in Gettysburg are likely interested in using lawn care services?
Sample proportion of 0.575.
For the entire population of 2400 households:
0.575*2400 = 1380
1380 households in Gettysburg are likely interested in using lawn care services
Answer:
20
Step-by-step explanation:
Vertical angles are equal to each other
x = -3x + 80
x + 3x = 80
4x = 80 divide both sides by 4
x = 20
