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solmaris [256]
3 years ago
8

Calculate the slope of a line with a run of 3 and a rise of 9

Mathematics
1 answer:
Karolina [17]3 years ago
8 0

Answer:

Multiply the slope by the run to calculate the rise between subsequent points. if you wanted to know the rise given a run of 3, multiply 10times 0.9 to calculate a rise of 9. Divide the rise by the slope to calculate the run.

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Find the dimensions of the rectangle with area 289 square inches that has minimum perimeter, and then find the minimum perimeter
nalin [4]
 <span>To minimize the perimeter you should always have a square. 
sqrt(289) = 17 
The dimensions should be 17 X 17 

To see , try starting at length 1, and gradually increase the length. 
The height decreases at a faster rate than the length increases, up until you reach a square. 

Or if you want to use algebra, Say the width is 17-x 
Then the length is 289/(17-x) 

Now, this is bigger than 17+x, as shown here: 
289/(17-x) > 17+x 
289 > 289 - x^2 
which is true. 
so the perimeter would be bigger than 2 * (17- x + 17 + x) = 2 * (2 * 17) = 4 * 17 

Again, the dimensions should be a square. 17 X 17.</span>
4 0
3 years ago
Why would i use quadratic formula to solve this quadratic equation?
lina2011 [118]

Answer:

It would be difficult to factor it...

Step-by-step explanation:

I'm not sure factoring would work so the quadratic formula would be the only way

6 0
3 years ago
A classroom has a length of 30 ft. and a width of 20 ft. The flooring is to be replaced by tiles. If each tile has a length of 3
Mashcka [7]

Answer:

100

Step-by-step explanation:

Hello! to calculate the number of tiles needed for the floor you need two things

1. number of tiles that fit across the width, this is achieved by dividing the total width by the width of each tile

Width=20ft=240in

N1=\frac{240}{24} =10

2.number of tiles that fit in the logitude, this is achieved by dividing the total length by the length of each tile.

leght=30ft=360in

N2=\frac{360}{36} =10

Finally, you multiply the number of tiles that fit in width by the number of tiles that fit in length.

N=10X10=100

3 0
3 years ago
I don’t know how to do this help
grigory [225]

Answer:

Step-by-step explanation:

Simple!

change the sign to minus then you get

5 1/6- 3 5/6 which will equal 1 2/6

btw do you like chicken wings? especially buffalo with ranch.

3 0
3 years ago
use the substitution method to solve the system of equations choose the correct ordered pair x-y=2 2x+3y=14
k0ka [10]

Answer:

(8/5 , -2/5)

Step-by-step explanation:

x-y=2

2x+3y=14

-y=-x+2

y=x-2

2x+3(x-2)=14

2x+3x-6=14

5x-6=14

5x=8

x=8/5

y=(8/5)-2

y= -2/5

5 0
3 years ago
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