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aev [14]
3 years ago
14

In an aquarium, 34 of the animals are fishes. Of the fishes, 712 are salt water fishes. ​The fraction of the fishes which are sa

lt water is - ( answer ) **
Mathematics
1 answer:
vitfil [10]3 years ago
7 0
712/34 divide it then you have your answer :)
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Find the exact value of arctan (sin (pi divided by two)). For full credit, explain your reasoning.
svetlana [45]
<span>Pi/4 is the answer Because sin(Pi/2)=1 and arctan (1)=Pi/4</span>
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3 years ago
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What is the sum of 12x^2+3x+6 and -7x^2-4x-2
GrogVix [38]

Answer: 5x^2-x+4

 

Step-by-step explanation:

In addition of polynomials, you only have to add the like terms.

Remember the multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-

Then, given the polynomial 12x^2+3x+6 and the polynomial -7x^2-4x-2, you can find the sum of them by adding the like terms.

Observe the procedure below:

(12x^2+3x+6)+(-7x^2-4x-2)=12x^2+3x+6-7x^2-4x-2=5x^2-x+4

Therefore, the sum is:

5x^2-x+4

 

7 0
3 years ago
Triangle Theorems I need helpppp
Advocard [28]
The correct answer is 30 degrees.
8 0
2 years ago
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Display each set of data in a stem-and-leaf plot.
Ann [662]

The stem-and-leaf plot for each set of data can be displayed as shown in the images attached below (see attachment).

<h3>What is a Stem-and-leaf Plot?</h3>

A stem-and-leaf plot is used to display a data distribution, for example, 25 and 26 can be displayed as:

2 | 5, 6.

Thus, the stem-and-leaf plot for each set of data can be displayed as shown in the images attached below (see attachment).

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7 0
2 years ago
What is the value of x in this equation?<br><br> 2x – 12 = -52
Scrat [10]

Answer:

x = -20

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

2x - 12 = -52

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

  1. Add 12 on both sides:                     2x = -40
  2. Divide 2 on both sides:                   x = -20

<u>Step 3: Check</u>

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

  1. Substitute in <em>x</em>:                      2(-20) - 12 = -52
  2. Multiply:                                 -40 - 12 = -52
  3. Subtract:                                -52 = -52

Here we see that -52 does indeed equal -52.

∴ x = -20 is the solution to the equation.

5 0
2 years ago
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