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dusya [7]
2 years ago
8

Which equation represents the data shown in the table below

Mathematics
2 answers:
Debora [2.8K]2 years ago
8 0
It is obviously C.  most obviously
Liono4ka [1.6K]2 years ago
5 0

Answer:

Equation c represent the table .

Step-by-step explanation:

Given : Table of data cost(x) : 2   4    6   8

                               Gallon (y) :5   10  15  20.

To find: which equation represents the data shown in the table.

Solution : We have given

 cost(x) : 2   4    6   8

Gallon (y) :5   10  15  20.

Equation C

y = 2.5 x

For x =2

y = 2.5 ( 2).

y = 5.

For x = 4.

y = 2.5( 4).

y = 10.

For x = 6

y = 2.5 (6).

y = 15.

For x =8

y = 2.5 ( 8)

y = 20.

Therefore, Equation c represent the table .

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The table below shows the hourly temperatures, for a city in Ohio on February 10, 2012, as predicted by the weatherman at the lo
bekas [8.4K]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A line is tangent to the circle x^2+y^2=41, at the point (-4,-5)
VashaNatasha [74]
If the equation of the circle is x^2+ y^2 = 41, we must first understand the parts of the equation.
 A general circle's equation is (x-h)^2+(y-k)^2= r^2  
(h.k) is the radius of the circle
r is the radius of the circle
Another useful fact to know is that tangent lines touch the circle at one point (4,5)

Since in our original equation there are no h or k values, we can assume that the center of the circle is (0,0). 

The formula for slope is <u>Y1-Y2</u>
                                   X1-X2
We can break this down with our two points (center and tangent)
  (0,0)    and   (-4,-5)
(X1,Y1) and (X2,Y2)

therefore, we will put the equation as such
<u>0-(-5)= 5</u>  = <em> </em><u><em>5</em></u>
0-(-4)= 4     <em> 4</em>

<em>this is our slope from the center to the point of tangency.</em>

We know that tangent lines are perpendicular to the radius, which we've already found the slope of. Perpendicular lines are opposite reciprocals of the line they are perpendicular to. 

Therefore, we take our slope from center to the tangent, and make it opposite and then take the reciprocal of that slope, which will give us the slope of the tangent line itself. (note: reciprocal means flip the numerator and denominator)
<u>5</u> =  <u>-5</u>  =  <u>-4</u><u>
</u>4     4        5   

Now, we have a point on the line, and the line's slope. We can use slope-intercept equation to find the equation of the line.

Slope-int      y=mx+b
(x,y) is a point,
m is the slope
b is the y intercept  ( the point where x=0, or where its on the y axis)

now we plug things in
(-4,-5) is our point,
<u>-4</u>  is our slope
5

-5=<u>-4</u>(-4)+b       After we plug things in, solve for b
     5

-5= 3.2+b

-1.8= b  or  b=  <u />1 <u>4</u>
                         5

Now we just need to rewrite our equation with all our components.
(-4.-5) = point
<u>-4</u>  = slope<u>
</u>5
1 <u>4</u> = y-intercept<u>
</u>   5

<em>y=</em><u><em>-4</em></u><em> x+ 1 </em><u><em>4</em></u><em>     This is the equation of the tangent line</em><u>
</u><em>    5         5</em>


Hope that helped
7 0
3 years ago
What is 2/3 1/10 equal to?
bogdanovich [222]
I think it's could be wrong though 5/10
6 0
3 years ago
Given that a:b=8:5 b:c=3:4 find the ratio a:b:c
olga55 [171]
A:b = 8:5 b:c = 3:4
since both sides have b. make b the same. multiply the left by the right side b value of 3 and multiply the right  by the left side b value of 5.
3(a:b)  and 5(b:c)
3 (8:5) and 5(3:4)
24:15          15:20
now that both sides have the same b value
a:b:c = 24:15:20

4 0
3 years ago
2 of 5
34kurt

Answer: 16 of the students are girls.

Step-by-step explanation:

3/5 = boys —> 60% of students.

2/5 = girls —> 40% of students.

40% = 0.4

G = 40 * 0.4

G = 16

7 0
2 years ago
Read 2 more answers
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