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gogolik [260]
3 years ago
14

Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.

Mathematics
1 answer:
Svetlanka [38]3 years ago
6 0
Step 1 A is correct.....
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Y – 11 = 3(x – 2) <br> in standard form
emmainna [20.7K]

Answer:

3x + y = -5

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property
  • Equality Properties

<u>Algebra I</u>

Standard Form: Ax + By = C

Point-Slope Form: y - y₁ = m(x - x₁)  

  • x₁ - x coordinate
  • y₁ - y coordinate
  • m - slope

Step-by-step explanation:

<u>Step 1: Define</u>

[PS]   y - 11 = 3(x - 2)

<u>Step 2: Rewrite</u>

<em>Find Standard Form</em>

  1. Distribute 3:                                  y - 11 = 3x - 6
  2. Subtract 3x on both sides:          -3x - y - 11 = -6
  3. Add 11 to both sides:                    -3x - y = 5
  4. Factor -1:                                       -1(3x + y) = 5
  5. Divide -1 on both sides:                3x + y = -5
4 0
2 years ago
What is the value of x if e3x+6=8
jarptica [38.1K]

Answer:

x=ln(2)/3

Step-by-step explanation:

e^3x+6=8

e^3x=8-6

e^3x=2

ln(e^3x)=ln(2)

3x=ln(2)

x=ln(2)/3

3 0
3 years ago
These figures are similar. The area of one is given. Find the area of the other. PLZ HELP
stellarik [79]

Answer:

12 in squared

Step-by-step explanation:

Since the side on the bigger figure is 6 and the smaller figure‘s side is 3, that means the smaller figure is half the size of the big figure.

So.. 24 divided by 2 is 12

6 0
3 years ago
6x3 + 8x2 – 2x + 4 and 10x3 + x2 + 11x + 9
balu736 [363]
6x3+8x2-2x+4=30-2x

10x3+x2+11x+9=21+13x
3 0
3 years ago
What is the positive solution of x square minus 36 equals 5x
777dan777 [17]
Answer:

<span>⇒x=9</span> (positive solution)

Explanation:

<span><span>x2</span>−36=5x</span>

<span>→<span>x2</span>−36−5x=0</span>

Factor the expression:

We get:

<span><span>(x−9)</span><span>(x+4)</span>=0</span>

First solution:

<span>⇒<span>(x−9)</span>=<span>0<span>x+4</span></span></span>

<span>⇒<span>(x−9)</span>=0</span>

<span>⇒x=<span>9</span></span>

3 0
3 years ago
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