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Natasha2012 [34]
3 years ago
13

H

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0

Answer:

3

Step-by-step explanation:

You might be interested in
Just number 9 would be fine please but also if you could number 10 would help​
topjm [15]

Answer:

9. a = -7

10. x = 1

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

a + 6a - 14 = 3a + 6a

<u>Step 2: Solve for </u><em><u>a</u></em>

  1. Combine like terms:                    7a - 14 = 9a
  2. Subtract 7a on both sides:          -14 = 2a
  3. Divide 2 on both sides:               -7 = a
  4. Rewrite:                                         a = -7

<u>Step 3: Check</u>

<em>Plug in a into the original equation to verify it's a solution.</em>

  1. Substitute in <em>a</em>:                   -7 + 6(-7) - 14 = 3(-7) + 6(-7)
  2. Multiply:                              -7 - 42 - 14 = -21 - 42
  3. Subtract:                             -49 - 14 = -63
  4. Subtract:                             -63 = -63

Here we see that -63 is equal to -63.

∴ a = -7 is a solution of the equation.

<u>Step 4: Define equation</u>

-12 - 4x = 8x + 4(1 - 7x)

<u>Step 5: Solve for </u><em><u>x</u></em>

  1. Distribute 4:                              -12 - 4x = 8x + 4 - 28x
  2. Combine like terms:                 -12 - 4x = -20x + 4
  3. Add 20x on both sides:            -12 + 16x = 4
  4. Add 12 on both sides:               16x = 16
  5. Divide 16 on both sides:            x = 1

<u>Step 6: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    -12 - 4(1) = 8(1) + 4(1 - 7(1))
  2. Multiply:                               -12 - 4 = 8 + 4(1 - 7)
  3. Subtract:                              -16 = 8 + 4(-6)
  4. Multiply:                               -16 = 8 - 24
  5. Subtract:                              -16 = -16

Here we see that -16 does indeed equal -16.

∴ x = 1 is a solution of the equation.

7 0
2 years ago
Here is a cuboid,
Dmitry_Shevchenko [17]

<em>Length = </em><em>80</em>

<em>Breadth = </em><em>30</em><em>  </em>

<em>Height = </em><em>30</em>

<em>Total surface area of a cuboid is= </em>

<em><u>2 ( lb + bh + hl )</u></em>

<em>Putting the values in the formula,</em>

<em>We get,</em>

<em>= 2</em><em> [</em><em> (80 x 30) + (30 x 30) + (30 x 80)</em><em>]</em>

<em>= 2 (2400 + 900 + 2400)</em>

<em>= </em><em><u>8100 cm²</u></em>

<em></em>

<em>THANK YOU!!</em>

<em>∝ </em><em>Sidhdi</em>

6 0
2 years ago
Joshua created the following sequence. This sequence grows at a constant rate. Fill in the blanks with the missing terms of the
quester [9]

Answer: A is 32.5

B is 162.5

Step-by-step explanation:

so what i did was that i divided 65/13 and i got 5 and then i divided 5/2 and got 2.5 and then i multiplied 13 and 2.5 and got 32.5 and then i divided 32.5 and 2.5 and got 65 and then i multiplied 65 and 2.5 and got 162.5

hope that helped!

good luck :)

4 0
2 years ago
Read 2 more answers
Given points A – 2,1) and B(4,5), find the coordinates of point P along the directed line
Sav [38]
Yea I have no proof to do that much cause
4 0
2 years ago
HELP!! I’m in class I just need help with the fill in blanks segment help me please
alex41 [277]

Answer:

First Blank: “controlled” Second Blank: "a Different" Third Blank: "the same" Last Blank: "Height of the ramp"

Step-by-step explanation:

5 0
2 years ago
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