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lakkis [162]
3 years ago
10

Write the equation of the line that passes through the points (2,−8) and (1,7). Put your answer in fully reduced point-slope for

m.
Mathematics
1 answer:
Alex17521 [72]3 years ago
6 0

Answer:

y = -15 + 22

Step-by-step explanation:

slope (m):

(y1 - y2)/(x1 - x2)

7 - (-8) / 1 - 2

15 / -1

m = -15

point slope formula:

y - y1 = -15(x - x1)

y - 7 = -15(x - 1)

y - 7 = -15x + 15

y = -15x + 22

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Sean is helping his dad build a tiled walkway in their backyard. The walkway will be 60 feet long and 2 feet wide. The local har
Natalija [7]
Length of the walkway that needs to be tiled = 60 feet
Width of the walkway that needs to be tiled = 2 feet.
Then
Area of the walkway that needs to be tiled = Length * Breadth
                                                                    = 60 * 2 square feet
                                                                    = 120 square feet
Now
Length of the tiles sold by the local store = 2 feet
Width of the tiles sold by the local store = 2 feet
Area covered by the tiles sold by the local store = 2 * 2 feet
                                                                              = 4 square feet
Number of tiles in a box = 6
Then
Total area covered by a box of tile = (6 * 2) square feet
                                                        = 12 square feet
 Then
The number of boxes required by Sean = (120/12)
                                                                = 10
So 10 boxes of tiles are needed by Sean and his father.
4 0
3 years ago
Read 2 more answers
Which graph represents the circle given by the equation x + y - 4x + 9y -7 = 0?
PSYCHO15rus [73]

The graph of the circle equation is graph (d)

<h3>How to determine the circle?</h3>

The equation is given as:

x^2 + y^2 - 4x + 9y -7 = 0

Rewrite as:

x^2 - 4x + y^2 + 9y = 7

Express (x^2 - 4x) and (y^2 + 9y) as perfect squares.

So, we have:

(x - 2)^2 + (y + 3)^2 = 7 + 4 +  20.25

Evaluate the sum

(x - 2)^2 + (y + 3)^2 = 31.25

A circle equation is represented as:

(x - h)^2 + (y - k)^2 = r^2

Where

Center = (h, k)

Radius = r

So, we have:

(h, k) = (2, -3)

r^2 = 31.25

r = 5.5

The circle that has a center of (2, -3) and a radius of 5.5 is graph d

Hence, the graph of the circle equation is graph (d)

Read more about circle equation at:

brainly.com/question/1559324

#SPJ1

5 0
2 years ago
A group of 105 visitors goes on the snow vehicle tour. Each vehicle can carry 9 visitors. How many snow vehicles will be needed
sergejj [24]

Answer:

12 because you have to divide 105 by 9 2inch is 11.6666666... so you round up and get 12

7 0
3 years ago
-1/3x+2x=3 3/4 what does the variable represent?
svet-max [94.6K]
Start off by combining like terms on the LHS (the terms with x in them).

So we get \frac{-1}{3}x+2x= \frac{-1}{3}x+ \frac{6}{3}x= \frac{-5}{3}x

Replacing this result with what we had before on the LHS, we get \frac{-5}{3}x=3 \frac{3}{4}= \frac{9}{4}

⇒Solve for x (divide both sides \frac{-5}{3})
⇒Don't forget about reciprocity rules when dividing.  This is the same as multiplying both sides by \frac{3}{-5}

⇒x= \frac{9}{4}( \frac{3}{-5})&#10;
⇒x= -\frac{27}{20}=-1\frac{7}{20} ***This is a proper fraction
4 0
3 years ago
Read 2 more answers
Determine the area and perimeter of a rectangle that is 13 centimeters wide and 25 centimeters long
Greeley [361]

Answer:

A=325

P=76

Hope this helps.

8 0
3 years ago
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