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babymother [125]
3 years ago
6

Nineteen and twenty please and thank you!

Mathematics
2 answers:
Olegator [25]3 years ago
6 0
The answer to #19 would be 47300 acres. (Multiply 55,000 x .86)
The answer to #20 would be 7700 acres. (Multiply 55,000 x .14)
In-s [12.5K]3 years ago
4 0
0.14 * 55,000= 7,700
7,700 acres of the forest was destroyed

55,000-7,700=47,300
47,300 acres of the forest was not destroyed
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15 of the 60 vehicles are cars what percent of the vehicles are <br> cars
Komok [63]

Answer:

25 percent

Step-by-step explanation:

to get percent you need a fraction of something over a hundred. To get there, you simplify this to 1/4, then go to 25/100, so 25%

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3 years ago
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3 years ago
Write an equation of a line passing through (-1,9) and (-5,11).
lubasha [3.4K]

Answer:

Hi there!

The answer to this question would be:

Step-by-step explanation:

the general equation would be: y= -1/2x + 17/2

first you want to solve for the slope (m): you wanna do delta y (change of y ) over delta x (change of x)

so it goes like (11-9)/(-5-(-1)) and you get -1/2

then you want to solve for the y intercept (b)

so you plug in one of the point that you were given, in this case I am using (-1,9)

so now the equation looks like 9 = 1/2 +b then solve for b and you get b=17/2

3 0
3 years ago
A(-3, 9) and B(5, 9) are the endpoints of the diameter of a circle. Use these points to find the standard equation of the circle
aksik [14]
Check the picture below.

notice the midpoint of the diameter segment, is just 1,9.

also, recall the radius is half the diameter, notice how long the radius is, just 4 units.

\bf \textit{equation of a circle}\\\\ &#10;(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2&#10;\qquad &#10;\begin{array}{lllll}&#10;center\ (&{{ h}},&{{ k}})\qquad &#10;radius=&{{ r}}\\&#10;&1&9&4&#10;\end{array}

7 0
4 years ago
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