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Oksi-84 [34.3K]

3 years ago

6

A circle is centered on point B. Points A, C and D lie on its circumference.

1 answer:

I am Lyosha [343]3 years ago

8 0

Answer:

the answer for A is 27 and B is 36 and C is 82

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Find the slope of the line containing the points ( a , 1/a ) a n d ( b , 1/b )

xz_007 [3.2K]

Answer:

slope=(y2-y1)/(x2-x1)

=(1/b-1/a)/(b-a)

=((a-b)/ab)/(b-a)

=(a-b)/ab(b-a)

=(a-b)/(-(ab(a-b))

=-1/ab

5 0

3 years ago

If Joan read 75 pages in 4 hours how long will it take her to read 250 pages

denis23 [38]

75/4=25 pages per hour, so, now we have to divide 250 by 25.

250/25=10

So, it would take Joan 10 hours to read 250 pages. :)

6 0

3 years ago

Read 2 more answers

Help pls (I need to make it 20 things so Im typing this)

Brrunno [24]

Answer:

8

Step-by-step explanation:

this 3 qub root of 512 is 8

6 0

3 years ago

John bought a video game that was 20% off. The game was originally $30. How much money DID HE SAVE by getting it on sale?

geniusboy [140]

Answer:

$6

Step-by-step explanation:

when you multiply $30 by 20% you get 6. 30-6= $24 after the 20% is taken off, but he saved $6.

7 0

3 years ago

Point B has coordinates (1,2). The x-coordinate of point A is -8. The distance between point A and point B is 15 units. What

Xelga [282]

Answer:

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

Step-by-step explanation:

From Analytical Geometry, we have the Equation of the Distance of a Line Segment between two points:

$l_{AB} = \sqrt{(x_{B}-x_{A})^{2} + (y_{B}-y_{A})^{2}}$ (1)

Where:

$l_{AB}$ - Length of the line segment AB.

$x_{A}, x_{B}$ - x-coordinates of points A and B.

$y_{A}, y_{B}$ - y-coordinates of points A and B.

If we know that $l_{AB} = 15$ , $x_{A} = -8$ , $x_{B} = 1$ and $y_{B} = 2$ , then the possible coordinates of point A is:

$\sqrt{(1+8)^{2}+(2-y_{A})^{2}} = 15$

$81 + (2-y_{A})^{2} = 225$

$(2-y_{A})^{2} = 144$

$2-y_{A} = \pm 12$

There are two possible solutions:

1) $2-y_{A} = -12$

$y_{A} = 14$

2) $2 - y_{A} = 12$

$y_{A} = -10$

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

8 0

3 years ago