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Aleksandr [31]
3 years ago
10

A math book comprises of 2 sections: arithmetic and geometry in the ratio 5:3. How much of each type of content will be needed t

o make a book of 480 pages?
Mathematics
2 answers:
Alex_Xolod [135]3 years ago
4 0
480/8=60

(60*5) : (60*3) = 300:180
spin [16.1K]3 years ago
4 0
800
480/3=160
160(5)=800
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Step-by-step explanation:

I assume you mean 130 as hundreds and tens and the answer to that would be 1 hundred and 3 tens.

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Please help me with this question. Algebra 2 is hard!!
trapecia [35]

Answer:

  • domain: {x ∈ ℝ : x ≤ 5}
  • range: {y ∈ ℝ : y ≤ -1}

Step-by-step explanation:

<u>Domain</u>

The domain of a function is the set of x values for which the function is defined. Here, the domain is limited by the values of x that make the square root defined. That is, the expression under the radical cannot be negative:

  -3x +15 ≥ 0

  15 ≥ 3x . . . . . . add 3x

  5 ≥ x . . . . . . . . divide by 3

  x ≤ 5 . . . . . . . . put x on the left (swap sides)

The rest of the notation in the domain expression simply says x is a real number.

  domain: {x ∈ ℝ : x ≤ 5} . . . . . . matches the first choice

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<u>Range</u>

The range of a function is the set of values that f(x) can have. We know the square root can be zero or any positive number. When it is zero, f(x) = -1.

When it is a positive number, that value is multiplied by -4 and added to -1, so f(x) is a number more negative than -1. Then the range of the function is all numbers -1 and below:

  range: {y ∈ ℝ : y ≤ -1} . . . . . . matches the last choice

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<em>Comment on domain/range problems</em>

When working domain and range problems, it works well to have a good understanding of the domain and range limitations of the functions we usually work with: polynomials, square root, logarithm, trig functions, exponential functions. Domain and range problems generally involve combinations of these or ratios of combinations of these.

3 0
3 years ago
The value of a certain car after one year was $13,595. The value of the same car after 3 years was $11,095. Find the slope and e
Oksanka [162]

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11,095-13,595= -2500

This is the value that the car has depreciated over 2 years (from the first year to the third year)

Since we need to find the slope we divide this value by two.

That value would be -1250

Since the value is negative, we know the car has depreciated in value. We also now know that it depreciated in value by $1250 every year

Hope this helps!

7 0
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emily has a bowl of M&amp;M's for every 25 M&amp;M's there are blue 5 M&amp;M's. what percent of her M&amp;M's are blue
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25/5=5

100/5=20

8 0
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