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3 years ago

Solve for r but write the answer in Simplified form -12 = 15r

Mathematics

1 answer:

user100 [1]3 years ago

4 0

Answer:

r = -4/5

Step-by-step explanation:

Divide both sides by 15 so you have r

-12/15 simplify (both by 3)

-4/5

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iven: C is a point on the perpendicular bisector, l, of AB. Prove: AC = BC Use the drop-down menus to complete the proof. By the

ZanzabumX [31]

Answer:

See the attached figure for better explanation :

Step-by-step explanation :

1. By the unique line postulate, you can draw only one line segment : BC

Since only one line can be drawn between two distinct points.

2. Using the definition of reflection, reflect BC over l.

To find line segment which reflects BC over l, we will use the definition of reflection.

3. By the definition of reflection, C is the image of itself and A is the image of B.

Definition of reflection says the figure about a line is transformed to form the mirror image. Now, CD is perpendicular bisector of AB so A and B are equidistant from D forming the mirror image of each other.

4. Since reflections preserve length, AC = BC

In Reflection the figure is transformed to form a mirror image, Hence the length will be preserved in case of reflection.

8 0

3 years ago

Read 2 more answers

Identify a common factor (other than 1) of terms in the expression-7x+21. Factor the expression to generate an equivalent expres

pashok25 [27]

Answer:

common factor = -7, equivalent expression -7(x -3)

Step-by-step explanation:

both terms have the 7 or -7 in common, once you factor it, you get -7(x-3)

5 0

3 years ago

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

WITCHER [35]

f(x) = ax2+bx+c, is quadratic equation
function opening downward if the a<0,
kf(x) = -x², a= -1<0
so the answer is B.kf(x)

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3 years ago

Write the slope - intercept form of the equation of each line through the points -2,5) and (0,-2)

grin007 [14]

Gradient (m) = change in y/change in x
-2-5/0–2 = 3.5
gradient (m) = 3.5
Now evaluate one of the coordinates and the gradient in the equation
y = mx + c
-2 = 3.5(0) + c
c = -2
so the answer is
y = 3.5x -2

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3 years ago

Simplifying Radicals 2-20

Tatiana [17]

- 18
2- 20
= -18

Because you do the same thing just going to end up with a negative.

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3 years ago