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ira [324]
3 years ago
11

13. The table represents some points of a linear function.

Mathematics
1 answer:
RUDIKE [14]3 years ago
8 0

Answer:

y=-4x-18

Step-by-step explanation:

To find the slope of the function, you need two points in order, the first point having its x and y coordinates labeled as x1 and y1, and the second point having its coordinates labeled as x2 and y2. then, use the equation for slope, which is m=(y2-y1)/(x2-x1), and plug in the numbers. You should get m=(-10+2)/(-2+4)= -8/2= -4.

Then, use the slope and a point on the graph, and plug it into point slope form, which is y-y1=m(x-x1). No matter what point you use, you should get the same thing. I used the point (-2, -4). Using this point, the steps to arrange the equation in slope intercept form is: y+2=-4(x+4)=> y+2=-4x-16 => y=-4x-18.

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The ratio of the surface areas of two spheres is 1:9.
lapo4ka [179]

Answer:

b

Step-by-step explanation:

7 0
2 years ago
A hose with a larger diameter working alone can fill a swimming pool in 9 hours.A hose with a smaller diameter working alone can
Arte-miy333 [17]

The large hose fills 1 pool in 9 hours written as  1/9

The small hose fills 1 pool in 18 hours, written as 1/18


Now you have 1/9 + 1/18 = 1/x ( x is the unknown time for both hoses).

rewrite 1/9 with a common denominator as 1/18:

1/9 = 2/18


Now you have 2/18 + 1/18 = 1/x

Add the left side:

2/18 + 1/18 = 3/18


Now you have 3/18 = 1/x

Cross Multiply:

3x = 18

Divide both sides by 3"

x = 18/3

X = 6


It will take both hoses 6 hours.

8 0
3 years ago
What is one half times 10
lys-0071 [83]
That would be 5, all you need to do is divide by 2 or mltiply by 0.5 to get half of a number
7 0
3 years ago
Read 2 more answers
1) (7 X 6) = 2 [{45 - 3(7 X 2 - 15 + 6)} + 4] ​
zhuklara [117]

Answer:

42=2[{45-3(14-21)}+4]

42=2[{45-3×-6}+4]

42=2[{45-18}+4]

42=2[{27}+4]

42=2[27+4]

42=2×31

42=62

7 0
2 years ago
Read 2 more answers
5x+18/8 = x/4 <br> Solve for x
ollegr [7]

Answer: x= -9/19

Step-by-step explanation:

5x+18/8=x/4

5x+ 9/4=x/4

5x+9/4-9/4=x/4-9/4

5x= x-9/4

5x(4)=x-9/4(4)

20x=x-9

20x-x=x-9-x

19x=-9

19x/19=-9/19

x=-9/19

8 0
3 years ago
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