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Ahat [919]
3 years ago
10

the expression W over 30 where W is a person's weight in pounds is used to find the approximate number of quarters of blood in t

he person's body how many quarters of blood does a 120 pound person have
Mathematics
1 answer:
Likurg_2 [28]3 years ago
6 0
Well, since we know 30 is the unit rate of determining the weight of someone, in order to find the approximate number of quarters of blood in the person's body, all we'll have to do is divide the amount of pounds the person is divided by 30 to figure out the approximate number of quarters of blood in the person's body.So we'll do 120 divided by 30, which is 4.So there are 4 quarters of blood in the 120 pound person.

Good luck with your studies, I hope this helps~!
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2. Draw the image of ∆RST under the dilation with scale factor ⅓ and center of dilation at the origin. Label the image ∆R’S’T’.
Alchen [17]
Since center of dilation is the origin, this is easy. Just divide all of the x and y coordinate values by 3. Place the new point on the graph, and draw the triangle.

R' = R(3,6)/3 = (3/3,6/3)=(1,2). So R'(1,2)
S' = S(-3,6)/3 = (-3/3,6/3)=(-1,2). So S'(-1,2)
T' = T(-6,-6)/3 = (-6/3,-6/3)=(-2,-2). So T'(-2,-2)

So you now know the location of the 3 new points. R' at (1,2), S' at (-1,2) and T' at (-2,-2). Simply draw those 3 points on your graph and connect the lines to make a new triangle.

6 0
2 years ago
Michelle has just been informed that her cell phone plan will be increasing in price. Her new pricing plan has a flat fee of $30
CaHeK987 [17]
30+0.10x
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3 0
2 years ago
40.51x+12.45y=666.64
irga5000 [103]

Answer:

The graph of the equation 40.51x+12.45y=666.64 is attached with the answer where the horizontal axis represents the X axis and the vertical axis represents Y axis.

To plot the graph physically just find two points lying on the line. Mark the points on the graph sheet and then join them. This will give you the line represented by the equation.

To find points on the line assume the value of any one variable, substitute it in the equation, then solve the equation to find the value of other variable. For example : assume y = 1; substitute the value of y in the equation;

⇒ 40.51x + 12.45×1 = 666.64

⇒ 40.51x = 666.64 - 12.45

⇒ 40.51x = 654.19

⇒ x = \frac{654.19}{40.51}

⇒ x ≈ 16.149

Therefore point ( 16.149 , 1 ) lie on the graph of the equation.

***Only two points are required to plot this graph just because it represents a straight line, that we can conclude just by observing the equation. If in an equation the power of x is 1 or 0 and power of y is 1 or 0 then only it will represent a straight line in 2-D plane.***

5 0
3 years ago
-5y-2y-8+12=18<br>answers
harina [27]
The correct answer is y=-2
I hope this helps :)
6 0
3 years ago
Read 2 more answers
What is the length of AB, with endpoints A (3,2) and B (8,14)?
velikii [3]
Answer is C. 13 Find with Magnitude  √(x1-x2)²+(y1-y2)²  = √25+ 144  = √169  = 13 units


6 0
3 years ago
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