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blagie [28]
3 years ago
8

What is the answer to this algebra problem

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
5 0
The problem said : -10,8 =-2 and -15,9=-6

kiruha [24]3 years ago
4 0
First find the slope of the two coordinates.

Slope is represented by the equation:

M = y2 - y1 / x2 - x1

Substitute in the coordinates.

M = 9 - 8 / -15 - (-10)

M = 9 - 8 / -15 + 10

M = 1 / -5

M = - 1/5


Then use the equation a line:

y - y1 = m(x - x1)

y - 8 = -1/5(x - (-10)

y - 8 = -1/5(x + 10)

y - 8 = -1/5x - 2

y = -1/5x + 6 is the solution
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A piano tuner charged a flat rate of $25 plus $12 per hour to tune a piano. Which expression represents how much the piano tuner
4vir4ik [10]

Answer:

T = 25 + 12 * h

Step-by-step explanation:

To find the rate of the tuner it is necessary to go to an equation:

First would be the full rate that has a value of 25. And for every hour that is 12.

That is to say:

T = 25 + 12 * h

h being the hours it takes to tune the piano. And this equation would reprehend what the piano tuner

4 0
3 years ago
Calculate the amount of paint needed to cover the following door:
love history [14]

Answer:

Step-by-step explanation:

The door is shape is a combination of a rectangle and a semicircle with a square window.

Area of the door = Area of rectangle + area of a semi circle

Area of a rectangle = Length * Width (LW)

area of a semicircle = πr²/2 where r is the radius of the semi circle.

Given the length of the rectangle = 2m and its width = 1m

Area of rectangle = 2*1 = 2m²

Given the radius of the semicircle = 1/2 m

Area of the semi circle = π(0.5)²/2

= 0.25π/2

= 0.785/2

Area of the semicircle= 0.3925m²

Area of the door = 2+0.3925

Area of the door = 2.3925m²

Since we are not to paint the window, we will subtract the area of the window from the total area.

Area of the window = area of a square = 0.2*0.2

= 0.04m²

Area to be painted = Area of door - Area of the square

Area to be painted = 2.3925m² - 0.04m²

Area to be painted  = 2.3535m²

Note that there was no enough information for us to calculate the amount of paint needed but knowing the area of the part to be painted can guide us.

4 0
3 years ago
Tracy purchases cotton candy in a ratio of 2 pink to 7 blue to sell at a carnival. She has a total of 108 bags. How many bags of
makvit [3.9K]

Answer:

24 pink

84 blue

Step-by-step explanation:

2 + 7 =9

2/9 = x/108

108 ÷ 9 = 12

12 × 2 =24

24 pink

7/9 = x/108

108÷9 = 12

12 ×7 =84

84 blue

6 0
2 years ago
At Jaxlyn’s Garage, 200 cars were inspected and worked on. There were 92 cars that
Ira Lisetskai [31]

Answer:

A) 0.26

B) 0.42

Step-by-step explanation:

No. of cars which needed both:

92 + 136 - (200 - 24)

52

P(both) = 52/200 = 0.26

No. of cars that need an alternator, but not new brakes:

136 - 52

84

P = 84/200 = 0.42

6 0
3 years ago
A grandfather is six times as old as his grandson. If the grandfather was 45 when his grandson was born, how old is the grandson
Semenov [28]
The grandson is 9 years old.

This would mean that the grandpa is 54.

9x6=54
54/6=9
5 0
2 years ago
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