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kicyunya [14]
3 years ago
15

16 is 80% of what number

Mathematics
2 answers:
Goshia [24]3 years ago
7 0

It is the number twenty

RSB [31]3 years ago
3 0

Answer:

20

Step-by-step explanation:

This reads mathematically exactly how it is stated in words.  The word "is" means =, the word "of" means multiply, and "what number" is x.  Therefore, the equation from that looks like this:  16 = .80x.  Don't forget that you cannot use a percent in an equation without first changing it to its decimal equivalency.  Solve that for x by dividing both sides by .80 to get that x = 20

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Y=–6x 2–12x – 2y=–4how many solutions does this linear system have?
MariettaO [177]
I think it would be 2 soulutions
7 0
4 years ago
Y = 2x – 4<br> y = -x + 5
Tasya [4]

Answer:

(3, 2)

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

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

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

y = 2x - 4

y = -x + 5

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

<em>Substitution</em>

  1. Substitute in <em>y</em>:                    2x - 4 = -x + 5
  2. Add <em>x</em> to both sides:           3x - 4 = 5
  3. Add 4 to both sides:           3x = 9
  4. Isolate <em>x</em>:                              x = 3

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                    y = -x + 5
  2. Substitute in <em>x</em>:                       y = -3 + 5
  3. Add:                                        y = 2
7 0
3 years ago
Maths Assignment <br> 4-a^2
galben [10]

Answer:

(2-a)^2

(2+a) (2-a)...

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AveGali [126]

Answer:25/39

Step-by-step explanation:

3 0
4 years ago
85 points! Sketch the following image on a blank piece of paper and rotate triangle ABC 80 degrees. 1st pic attached: is the tri
Andreas93 [3]

Answer:

Step-by-step explanation:

It can never be perfect, but what I see, I think yes, because u didn't rotate it 90 degrees since it's not a right triangle, but u did rotate it where it looks close to 90 degrees, so it does look like its 80 degrees as a rotation. Question, does it not say how to rotate it? Like 80 degrees clockwise, or 80 degrees counterclockwise?

Hope this helped!

7 0
3 years ago
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