Median = middle number
Total ten numbers so
median = (17 + b)/2
given median = 18
so
(17 + b)/ 2 = 18
17+b = 36
b = 36 - 17
b = 19
Now you have the data set
7, a , 12, 15 , 17, 19, 20, 22, 24 , 25
Mean = (7 + a + 12+ 15 +17 + 19 + 20 + 22 +24 +25)/ 10
Given mean = 17
so
17 = (7 + a + 12+ 15 +17 + 19 + 20 + 22 +24 +25)/ 10
17 = (a + 161) / 10
a + 161 = 170
a = 170 - 161
a = 9
answer
a = 9
b = 19
I got D for the answer ...
Hey there! :)
Answer:
x = -7/12.
Step-by-step explanation:
Given:

Create a common denominator for each term:

Disregard the denominator:
12x + 5 = -2
Subtract 5 from both sides:
12x = -7
Divide both sides by 12:
x = -7/12.
For this case we have that by definition the mass is given by:

Where,
- <em>D: density
</em>
- <em>V: Volume
</em>
The volume of a pyramid is given by:

Where,
- <em>A: area of the base
</em>
- <em>h: height
</em>
Substituting values we have:

We now calculate the mass:

Answer:
he needs 7.74 pounds of zinc
From the equation the slope is -1/3 and the y-intercept is -3/2. This shows that the intercept must pass through the y-axis at -3/2.
<h3>Equation of a line</h3>
A line is defined as the shortest distance between two points. The formula for finding the equation of a line in slope-intercept form is given as;
y = mx + b
The point sloe form of the equation is given as y-y1 = m(x-x1)
where
- m is the slope
- b is the intercept
- (x1, y1) is any point on the line
Given the equation of graph to plot
y=-x/3 -3/2
From the equation the slope is -1/3 and the y-intercept is -3/2. This shows that the intercept must pass through the y-axis at -3/2.
Learn more on equation of a line here: brainly.com/question/18831322
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