$6*127 + $3 * (number adults) = $1053
3a = 291
a = 97
c = 127-97 = 30
13+6(d)=97
Each dog Eric walks is 13 plus 6 dollars for water. He earns 97 dollars buy you don't know the amount of dogs so d=dogs. You need to multiply the amount if dogs to the amount of money Eric earns.
Considering the volume of the cylinder, it is found that Cai has collected 327.9 grams of trace element.
<h3>What is the volume of a cylinder?</h3>
The volume of a cylinder of radius r and height h is given by:
.
In this problem, we have that the radius and the height are given, respectively, by:
r = 9.3 cm, h = 17 cm.
Hence the volume of the cylinder in cubic centimeters is given by:
A water sample shows 0.071 grams of some trace element for every cubic centimeter of water, hence the amount of trace element is given by:
0.071 x 4619 = 327.9 grams.
More can be learned about the volume of a cylinder at brainly.com/question/9408912
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Answer:
- demand: p = -9/8x +200
- supply: p = 9/4x -43
Step-by-step explanation:
The 2-point form of the equation for a line can be used as a starting place for writing these equations. For dependent variable p and independent variable x, it will be ...
p = (p2 -p1)/(x2 -x1)(x -x1) +p1
a) Two points on the demand curve are (x, p) = (56, 137) and (72, 119). Then the equation is ...
p = (119 -137)/(72 -56)(x -56) +137
p = -18/16(x -56) +137
p = -9/8x +200
__
b) Two points on the supply curve are (x, p) = (80, 137) and (72, 119). Then the equation is ...
p = (119 -137)/(72 -80)(x -80) +137
p = -18/-8(x -80) +137
p = 9/4x -43
An equation for this is 5b. 5 times the number of books (b).