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3 years ago

(TEST TOMORROW) Rewrite the expression using a positive exponent.

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

5 0

Answer:

$\frac{1}{8 {}^{7} }$

Step-by-step explanation:

${a}^{ - n} = \frac{1}{ {a}^{n} }$

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Complete the equation of the line through (-6,5) and (-3,-3)

lana66690 [7]

Answer:

y=-8/3x-11 is the equation of the line and the value of y

Step-by-step explanation:

Use point slope form m = y-y1/x-x1, or y-y1=m(x-x1)

Find the slope from the two points (-6,5) and (-3,-3)

m = y2-y1/x2-x1 = -3-5/-3+6 = -8/3

use one point say (-6,5) that passes through the line and the slope to form the equation y-5=-8/3(x+6) rearrange y= -8/3(x+6)+5

y=-8/3x - 48/3 +5 = -8/3x-16+5 = -8/3x-11

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3 years ago

Miss dessine and miss Lombardi bought a total of a 123 pumpkins together miss Lombardi bought 79 pumpkin's how many pumpkins tha

Juli2301 [7.4K]

The answer is 44
you subtract 123 minus 79 to get your answer!

7 0

3 years ago

25 POINTS AVAILABLE

myrzilka [38]

Answer:

$\large\boxed{1.\ (-3, 0),\ r = 3}\\\boxed{2.\ (x+4)^2+(y-3)^2=36}\\\boxed{3.\ (x-2)^2+(y-1)^2=(\sqrt{34})^2}$

Step-by-step explanation:

The equation of a circle in standard form:

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

(h, k) - center

r - radius

1. We have the equation:

$(x+3)^2+y^2=9\\\\(x-(-3))^2+(y-0)^2=3^2$

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2. We have the center (-4, 3) and the radius r = 6. Substitute:

$(x-(-4))^2+(y-3)^2=6^2\\\\(x+4)^2+(y-3)^2=36$

3. We have the endpoints of the diameter: (-1, 6) and (5, -4).

Midpoint of diameter is a center of a circle.

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)$

Substitute:

$h=\dfrac{-1+5}{2}=\dfrac{4}{2}=2\\\\k=\dfrac{6+(-4)}{2}=\dfrac{2}{2}=1$

The center is in (2, 1).

The radius length is equal to the distance between the center of the circle and the endpoint of the diameter.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the points (2, 1) and (5, -4):

$r=\sqrt{(5-2)^2+(-4-1)^2}=\sqrt{3^2+(-5)^2}=\sqrt{9+25}=\sqrt{34}$

Finally we have:

$(x-2)^2+(y-1)^2=(\sqrt{34})^2$

7 0

3 years ago

(Btw this is not a QOTD, but I might do another one later)

erastovalidia [21]

The answer is C $550

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3 years ago

The value of a car decreases by 20 percent per year. Mr.Sing purchases a 22,000 automobile.What is the value of the car at the e

Sloan [31]

Answer:

13,200

Step-by-step explanation:

6 0

3 years ago

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