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Morgarella [4.7K]
3 years ago
14

Find the equation that represents the proportional relationship in this graph, for y in terms of x​

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
5 0
For x=5 y=4 so we can calculate the slope m=(y1-y)/(x1-x)=(5-0)/(4-0)=5/4
then use (y-y1)=m(x-x1) and you get
y=(5/4)x-5
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ELEN [110]

Answer:

60 mph

Step-by-step explanation:

I'm not sure if you meant 30 miles in half an hour, but if that's the case, your answer is 60 mph.  

There are two halves in an hour so

30 x 2 = 60

7 0
4 years ago
Which line has the steepest graph?
Lana71 [14]

Answer:

I think it is the fourth one

y =  \frac{1}{8} x + 9

Step-by-step explanation:

I hope that is useful for you :)

5 0
3 years ago
The smith family is shopping for a new car
Alenkasestr [34]

Answer:

Sample response: The Smith family has 2 choices to make, color and style. By the fundamental counting principle, the product of the number of choices of color and style must equal 8. So, there could be 1 color and 8 style choices, 2 colors and 4 styles, 4 colors and 2 styles, or 8 colors and 1 style.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Four CDs and 4 DVDs cost $164. The cost of the 4 CDs is half the cost of the
Andrej [43]

Answer:

$13.67

Step-by-step explanation:

Let's say that CD= c and DVDs= d. Four CDs and 4 DVDs cost $164, so the equation will be:

i.  4c + 4d= 164

The cost of the 4 CDs is half the cost of the  4 DVDs, to put into an equation it will be:

ii.   4c= 0.5(4d)

     4c= 2d

     d= 2c

Then we can substitute the second equation (ii) into the first equation (i). The calculation will be:

4c + 4d= 164

4c + 4(2c)= 164

4c+ 8c= 164

12c= 164

c=13.67

The cost for each CD is $13.67

5 0
3 years ago
earth's radius is approximately 4000 mi. about two thirds of the Earth's surface is covered by water. estimate the land area on
UkoKoshka [18]

9514 1404 393

Answer:

  67 million square miles

Step-by-step explanation:

The area of a sphere is given by ...

  A = 4πr²

So the area of the Earth is approximately ...

  A = 4π(4000 mi)² ≈ 2.01×10^8 mi²

The area of the 1/3 that is not covered by water is approximately ...

  (2.01×10^2 mi²)/3 = 6.7×10^7 mi²

The land area is estimated to be about 67 million square miles.

7 0
3 years ago
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