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Vera_Pavlovna [14]
3 years ago
14

How do I write the equation of Through(-2,-3),slope=-2

Mathematics
1 answer:
garri49 [273]3 years ago
7 0

Answer:

y= -2x-7

Step-by-step explanation:

Start with the linear equation formula.

y= mx+b

identify what you already have.

x= -2 and y= -3 m(slope)= -2

we are trying to find b, so plug in what you have.

-3=-2(-2)+b

simplify.

-3= 4+b

subtract 4 on both sides.

-7= b

set up your equation without the x and y value.

y= -2x-7

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The scale on a map is 2cm= 1km. Express this as a ratio
Lemur [1.5K]
This would mean that the ratio is 2:1 or 2 to 1 or also 2/1.

The ratio would be that because it's 2 centimeters per 1 kilometer.
7 0
3 years ago
Please help me answer the question 9 though 10
olchik [2.2K]

Answer:

9) slope of AC = slope of FH

Equation of the line is y = - x + 5

10) Area = 320

Step-by-step explanation:

For 9, the only thing similar IS the slope of the hypotenuse because the triangles are along the same line. Unless they're asking for the equation of the line, then that's just using the point slope equation which is:

y = - x + 5

For 10, just multiply 4 and 5 by 4 to get 16 and 20. Then multiply 16 and 20 to get 320.

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3 years ago
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Round to the nearest tenth: 84.8 cubic inches

8 0
2 years ago
Read 2 more answers
Flying against the wind, a jet travels 2190 miles in 3 hours. Flying with the wind, the same jet travels 9520 miles in 8 hours.
dezoksy [38]

Answer:

Velocity of jet in still air is 970 miles per hour and velocity of wind is 210 miles per hour.

Step-by-step explanation:

Jet's velocity against wind is

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Let the velocity of jet in still air be x miles per hour and velocity of wind be y miles per hour.

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x − y = 760 and x + y = 1180

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Hence velocity of jet in still air is 970 miles per hour and velocity of wind is

210 miles per hour.

Actual Answer:

https://socratic.org/questions/flying-against-the-wind-a-jet-travels-3040-miles-in-4-hours-flying-with-the-wind

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How long would the string be in meters if it is 120 centimeters
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1 meter = 100 centimeters, so 120 centimeters equal to 1.2 meters.
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