So to set up the equation we have:
<span><span><span>4M</span><span>4+M</span></span>=<span>127</span></span>
<span>28M=12(4+M)</span>
<span>28M=48+12M</span>
<span>28K−12M=48</span>
<span>(28−12)M=48</span>
<span>16K=48</span>
<span>M=<span>4816</span></span>
<span>M=3</span>
So Marna can clean the chimney alone in 3 hours
PXrXt /100 is the formula
Answer:
D
Step-by-step explanation:
A) This has a y intercept at (0,0) so this is True
B) True
C) True
D) This is NOT true. The degree of the numerator and denominator are the same. This graph looks like the function of 
Answer:
The measures of ∠BOC is 25.4° and that of ∠AOB is 15.8°.
Step-by-step explanation:
Given that,
∠AOC = 31°
∠BOC = 2x+10
∠AOB = 4x-15
As we can seen from the figure that,
∠AOC = ∠AOB + ∠BOC
Put all the values,
31 = 4x-15+2x+10
31 = 6x-15
31+15 = 6x
46 = 6x
x = 7.7
∠BOC = 2(7.7)+10 = 25.4°
∠AOB = 4(7.7)-15 = 15.8°
So, the measures of ∠BOC is 25.4° and that of ∠AOB is 15.8°.
The mean salary for Linda's employees is in thousands, is: 34,800.
<h3>What is the Mean of a Data Set?</h3>
- Mean of a data set is the average of the data set.
- To calculated the mean of a data set, use the formula: Mean = (∑fx)/∑f).
Thus:
∑fx = 974
∑f = 28
Therefore:
Mean = 974/28
Mean = 34.8
In thousands, the mean salary for Linda's employees is 34,800.
Learn more about mean of a data set on:
brainly.com/question/11015069
