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ZanzabumX [31]
3 years ago
12

-5x - 4y + 2x + 7y = can someone help me with this please

Mathematics
1 answer:
wolverine [178]3 years ago
4 0

Answer:

= -3 (x-y)

Step-by-step explanation:

-5x - 4y + 2x + 7y

Collect the like terms by calculating the sum or difference of their coefficients

(-5+2)x

-3x

(-4+7)y

3y

-3x + 3y

Factor out -3 from the expression

-3 (x-y)

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Use the drop-down menus to complete the proof. by the unique line postulate, you can draw only one segment,
Doss [256]

The reflection of BC over I is shown below.

<h3>What is reflection?</h3>
  • A reflection is a mapping from a Euclidean space to itself that is an isometry with a hyperplane as a set of fixed points; this set is known as the reflection's axis (in dimension 2) or plane (in dimension 3).
  • A figure's mirror image in the axis or plane of reflection is its image by reflection.

See the attached figure for a better 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 the 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, the CD is the perpendicular bisector of AB so A and B are equidistant from D forming a 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.

Therefore, the reflection of BC over I is shown.

Know more about reflection here:

brainly.com/question/1908648

#SPJ4

The question you are looking for is here:

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 unique line postulate, you can draw only one segment, Using the definition of, reflect BC over l. By the definition of reflection, C is the image of itself and is the image of B. Since reflections preserve , AC = BC.

6 0
2 years ago
15 ounces of gold cost $6058.50 find the unit rate in dollars per ounce
Vlad [161]
The unit rate in dollars per ounce would be $403.90.
Hope this helps! :D
3 0
3 years ago
Read 2 more answers
Makayla is moving and must rent a truck. There is an initial charge of $40 for the rental plus a fee of $3 per mile driven. Writ
Sergeeva-Olga [200]

Answer:

C(m) = $(40+3m)

Step-by-step explanation:

In this question, we are asked to write an equation representing the total cost of renting a truck by Makayla.

We proceed as follows;

Form the question, we can deduce that there is an initial cost of $40 and a rental fee of $3 per mile driven.

Now, we were made to know that she had driven m miles. We now calculate the rental fee for this m miles she has driven. Mathematically, we only need to find the product here. The rental fees for the m Miles traveled would be m * 3 = $3m

Now the total cost C(m) would be = $40 + $3m or simply C(m) = $(40+3m)

7 0
4 years ago
Please help
Gnoma [55]
The constant is 7

The interpretation of this constant is Marcus paying to enter the county fair.
4 0
3 years ago
Don’t get it I hate this teach need help
fomenos
7. the unit rate is 30 divide 60 by 2 and 90 by 3 to show u r work

8.the unit rate is 1.89 divide 18.90 by 10 and so on
3 0
4 years ago
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