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Olenka [21]
3 years ago
11

On Dan's eReader, 2/3 of the books are fiction. Of the fiction books,4/5 are mysteries. What fraction of the books on Dan's eRea

der are mysteries? What fraction the books are not mysteries? Explain
Mathematics
1 answer:
Nitella [24]3 years ago
8 0

Answer:

Step-by-step explanation:

Let's take a real situation. Suppose he has 1500 books in total

2/3 of them are fiction. Of means multiply.

them = 1500

2/3 * 1500 = 3000/3 = 1000

Now of the one thousand fiction books 4/5 of them are mysteries.

4/5 * 1000 = 4000/5 = 800.

Now let's see what happens when we just do this by answering the question directly.

2/3 * 4/5 = 8/15 This has the meaning that 8 out of every 15 books = mysteries.

Try this on the 1500 books.

8/15 * 1500 = 9000/15 = 800. So the answers are the same and the answer the computer expects should be 8/15 or 0.533333333

Just to check, does 0.5333333 * 1500 = 800? Try it.

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State how many imaginary and real zeros the function has.
sammy [17]

Answer:

Step-by-step explanation:

If you'd graph this function on a graphing calculator or graphing utility, you'd see quickly that the graph never touches or crosses the x-axis.  This tells us immediately that there are no real roots; all four roots are complex or imaginary.

6 0
3 years ago
Plz help me with my hw plz it's proportional relationships and please include the equation
Sphinxa [80]
The constant of proportionality is k = y/x.....k = 40/200 = 1/5

y = mx + b
slope(m) = 1/5
(200,40)...x = 200 and y = 40
now we sub...we r looking for b, the y int

40 = 1/5(200) + b
40 = 40 + b
40 - 40 = b
0 = b

so ur equation is : y = 1/5x

if pop star earned 800
800 = 1/5x
800 * 5 = x
4000 = x
3 0
2 years ago
Please help simplify this equation by combining like terms (3x-5) +(4x+12)
I am Lyosha [343]

Answer:

7x+17

Step-by-step explanation:

(3x-5) +(4x+12)

I like to line them up vertically

 (3x-5)

+(4x+12)

----------------

  7x+17

4 0
3 years ago
Read 2 more answers
Please help me a need to finish this before 4th period i'll give brainlist
n200080 [17]

Answer:

2

Step-by-step explanation:

Let's take any two points on the graph

1. (7, 3)

2. (8, 5)

Slope

= Δy/Δx

= 2/1

= 2

7 0
2 years ago
Which statement is true about the end behavior of the
erastovalidia [21]

Answer:

As the x-values go to positive infinity, the function's

values go to negative infinity.

Step-by-step explanation:

upon viewing the graph you will notice that the function in blue will appear to go down (negative) as you follow the x to the right, in the positive direction.

Making your answer to be as the x goes to positive inf (right) the values of the function go to negative inf (down).

7 0
2 years ago
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