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Firdavs [7]
2 years ago
6

How can you tell if the expression 7x-4 and 6x-4-x are equivalent

Mathematics
1 answer:
olga_2 [115]2 years ago
8 0

Answer:

see below

Step-by-step explanation:

7x-4          6x-4-x

Combine like terms on the second expression

7x -4          6x -x -4

                 5x -4

These are not equivalent  expressions

7x -4  does not equal 5x-4

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Point a is at (-1,-9) and point m is at (0.5,-2.5) point m is the midpoint of a and point b what coordinates of point b
Inessa05 [86]

Answer:

B (2, 4)

Step-by-step explanation:

A (-1,-9); M (0.5, -2.5); B (xB, yB)

M is the midpoint of AB, therefore we have these 2 equations:

(*) xA + xB = 2. xM

(**) yA + yB = 2. yM

(*) <=> xB = 2. xM - xA = 2x0.5 - (-1) = 1 + 1 = 2

(**) <=> yB = 2. yM - yA = 2x(-2.5) - (-9) = -5 + 9 = 4

So, B (2, 4)

6 0
3 years ago
Mhanifa please help me on this! I will mark brainliest
Sever21 [200]

Answer:

  • D. 85°

Step-by-step explanation:

<u>Exterior angle is equal to sum of non-adjacent interior angles:</u>

  • x + 40° = 125°
  • x = 125° - 40°
  • x = 85°

Correct choice is D. 85

3 0
2 years ago
Read 2 more answers
Carlos is looking at apartments with 3 of his friends. They want the monthly rent to be no more than $2,360. If the roommates sp
alekssr [168]

Answer:

  $590

Step-by-step explanation:

$2360 divided by 4 is $590.

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3 years ago
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CAN SOMEONE PLS HELP ILL GIVE YOU BRAINLIST!! I DONT UNDERSTAND IT .
Harman [31]

Answer:

m∠P = 82°

m∠Q = 49°

m∠R = 49°

Step-by-step explanation:

<em>In the isosceles triangle, the base angles are equal in measures</em>

In Δ PQR

∵ PQ = PR

∴ Δ PQR is an isosceles triangle

∵ ∠Q and ∠R are the base angles

→ By using the fact above

∴ m∠Q = m∠R

∵ m∠Q = (3x + 25)°

∵ m∠R = (2x + 33)°

→ Equate them

∴ 3x + 25 = 2x + 33

→ Subtract 2x from both sides

∵ 3x - 2x + 25 = 2x - 2x + 33

∴ x + 25 = 33

→ Subtract 25 from both sides

∵ x + 25 - 25 = 33 - 25

∴ x = 8

→ Substitute the value of x in the measures of angles Q and R

∵ m∠Q = 3(8) + 25 = 24 + 25

∴ m∠Q = 49°

∵ m∠R = 2(8) + 33 = 16 + 33

∴ m∠R = 49°

∵ The sum of the measures of the interior angles of a Δ is 180°

∴ m∠P + m∠Q + m∠R = 180°

→ Substitute the measures of angles Q and R

∵ m∠P + 49 + 49 = 180

∴ m∠P + 98 = 180

→ Subtract 98 from both sides

∵ m∠P + 98 - 98 = 180 - 98

∴ m∠P = 82°

6 0
2 years ago
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I think of a number take away one and multiply the result by three but using x as your unknow
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I think of a number, (55) = my x. -1 = 54 x 3 = 162.
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2 years ago
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