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Ray Of Light [21]
3 years ago
8

What is the distance between -42 and -12 on a number line?

Mathematics
2 answers:
ziro4ka [17]3 years ago
6 0

Answer:

30

Step-by-step explanation:

sveticcg [70]3 years ago
5 0

Answer:

30

Step-by-step explanation:

The distance between two points on a number line is the absolute value of the difference of their coordinates. Because it is the absolute value, the distance will always be positive.

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Simplify <br><br> (2x^{2} - 5x + 3) - (-x^{2} + 4x - 5)
MrRissso [65]

Answer:

3x^2 - 9x + 8

Step-by-step explanation:

To simplify:

  • Distribute the -1 into the second term.
  • Collect and combine like-terms (terms with the same variables or powers)

The expression can be rewritten has (2x^2 - 5x + 3) -1(-x^2 + 4x - 5)

After distributing the -1, the equation becomes:

  • (2x^2 - 5x + 3) + (x^2 - 4x + 5)

The like-terms are:

  • 2x^2 and x^2
  • -5x and -4x
  • 3 and 5

Combine the like-terms:

  • 2x^2 + x^2 = 3x^2
  • -5x - 4x = -9x
  • 3 + 5 = 8

Substitute the simplified like-terms into the expression, in descending order:

  • 3x^2 - 9x + 8
5 0
3 years ago
Help please this is really confusing ​
wolverine [178]

Answer: help woth what?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Area, Volume, Surface Area-
daser333 [38]

Answer:

30 x 30x 9 = 8,100 that is the answer have a great day

5 0
2 years ago
Read 2 more answers
Please help me with the question below (also please explain).
devlian [24]

To find the surface area of the given figure identify all the faces on the figure, calculate the area of each face and then sum the areas:

Measures in red

Number of faces in green, total faces 9

Area of a triangle:

A=\frac{1}{2}bh

Area of a rectangle:

A=bh

Area of faces 1 and 2(rectangles):

\begin{gathered} A_1=A_2=20in*11in \\ A_1=A_2=220in^2 \end{gathered}

Area of faces 3 and 4 (triangles):

\begin{gathered} A_3=A_4=\frac{1}{2}(12in)(9in) \\  \\ A_3=A_4=54in^2 \end{gathered}

Area of faces 5 and 6 (rectangles):

\begin{gathered} A_5=A_6=12in*5in \\ A_5=A_6=60in^2 \end{gathered}

Area of faces 7 and 8 (rectangles):

\begin{gathered} A_7=A_8=20in*5in \\ A_7=A_8=100in^2 \end{gathered}

Are of face 9 (rectangle):

\begin{gathered} A_9=20in*12in \\ A_9=240in^2 \end{gathered}

Total surface area:

\begin{gathered} SA=A_1+A_2+A_3+A_4+A_5+A_6+A_7+A_8+A_9 \\  \\ SA=220in^2+220in^2+54in^2+54in^2+60in^2+60in^2+100in^2+100in^2+240in^2 \\  \\ SA=1108in^2 \end{gathered}<h2>Then, the surface area of the given figure is 1108 square inches</h2>

4 0
1 year ago
Tax on building materials is 5%. What is the total bill including discounts and taxes?
Lapatulllka [165]

it would be

$3380.33

hope this helps :)

7 0
4 years ago
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