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Scilla [17]
3 years ago
9

65% of what number is 577.2 ?

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0
577.2 ÷ 65 = 88.8 × 100 = 888
The answer would be 100.
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If 10x +4 is equal to 12x -26 what is the value of x
Morgarella [4.7K]

Answer: 15

Step-by-step explanation:

10x+4=12x-26

Add 26 to both sides; 10x+30=12x

subtract 10x from both sides; 30=2x

divide both sides by 2; x=15

3 0
3 years ago
The moon forms a right triangle with the Earth and the Sun during one of its phases, as shown below:
nordsb [41]

Answer:

Step-by-step explanation:

The Earth, Sun and Moon form a right triangle.

By the definition of cosine in a right triangle we can write that  

cos x ° = adjacent side /hypothenuse  = y/ distance Moon Sun

Since we measured the angle x, and the distance y we can use algebra to find the unknown distance between the moon and the Sun.

distance Moon Sun = y/cos x°

7 0
3 years ago
Solve the problem below and show your work
ehidna [41]

The derivative of the function is 2x/(3+x²).

<h3>What is Derivative?</h3>

The derivative is the instantaneous rate of change of a function with respect to one of its variables.

Given function:

y= ln(3+x²)

Differentiating and applying chain rule

=1/(3+x²) d/dx(3+x²)

=1/(3+x²) (2x)

= 2x/(3+x²)

Hence, the derivative of the function is 2x/(3+x²).

Learn more about derivative here:

brainly.com/question/124529

#SPJ1

6 0
3 years ago
What could a person collecting data for a survey do to avoid age bias in the results?
Rudik [331]

Answer:

The online survey  has large biases concerning representativeness. Regarding the behavioural characteristics of consumers, the face-to-face data delivers the best results, followed by the telephone interviews and finally the online survey.

Face-to-face surveys still deliver the most representative results. Telephone surveys may provide a good alternative, but we would advise use of a larger sample. The online  survey needs to be corrected, one should relinquish representativeness.


4 0
3 years ago
Will give brainliest
Sonja [21]

The sum of the two <em>rational</em> equations is equal to (3 · n² + 5 · n - 10) / (3 · n³ - 6 · n²).

<h3>How to simplify the addition between two rational equations</h3>

In this question we must use <em>algebra</em> definitions and theorems to simplify the addition of two <em>rational</em> equations into a <em>single rational</em> equation. Now we proceed to show the procedure of solution in detail:

  1. (n + 5) / (n² + 3 · n - 10) + 5 / (3 · n²)      Given
  2. (n + 5) / [(n + 5) · (n - 2)] + 5 / (3 · n²)     x² - (r₁ + r₂) · x + r₁ · r₂ = (x - r₁) · (x - r₂)
  3. 1 / (n - 2) + 5 / (3 · n²)     Associative and modulative property / Existence of the multiplicative inverse
  4. [3 · n² + 5 · (n - 2)] / [3 · n² · (n - 2)]       Addition of fractions with different denominator
  5. (3 · n² + 5 · n - 10) / (3 · n³ - 6 · n²)       Distributive property / Power properties / Result

To learn more on rational equations: brainly.com/question/20850120

#SPJ1

4 0
2 years ago
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