Percentages Just finish the sentences

Mathematics

2 answers:

Soloha48 [4]2 years ago

7 0

The answer for 80% of games is 16 games is 12.8.

maks197457 [2]2 years ago

3 0

“80% of 20 games is 16 games.”

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Wich graph is the result of the reflection f(x) =1/4(8)^x across the y axis and then across the x- axis

Snowcat [4.5K]

Answer:

I assume that the function is:

$f(x) = \frac{1}{4}*8^x$

Now let's describe the general transformations that we need to use in this problem.

Reflection across the x-axis:

For a general function f(x), a reflection across the x-axis is written as:

g(x) = -f(x)

Reflection across the y-axis:

For a general function f(x), a reflection across the y-axis is written as:

g(x) = f(-x)

Then a reflection across the y-axis, and then a reflection across the x-axis is just:

g(x) = -(f(-x)) = -f(-x)

In this case, we have:

$f(x) = \frac{1}{4}*8^x$

then:

$g(x) = -f(-x) = -\frac{1}{4}*8^{-x}$

Now we can graph this, to get the graph you can see below:

6 0

2 years ago

What do x and y equal?

olasank [31]

Y is equal to 23 and x is equal to 28. This is because you can move 3y over to the corner to its left that matches the position 3y is in. From there you set 3y + 5y -4 = 180 because the add up to a straight line. Then you get 23 for y and you can use that to make 3y=69. Use the 69 to set it equal to 2x +13 and solve to get x=28.

5 0

3 years ago

A group of naturalists catch, tag and release 121 trout into a lake. The next day they catch and release 48 trout, of which 22 h

RideAnS [48]

Answer:

264.

Step-by-step explanation:

Let x represent the number of trout in the lake.

We have been given that a group of naturalists catch, tag and release 121 trout into a lake. The next day they catch and release 48 trout, of which 22 had been tagged.

Using proportions, we will get:

$\frac{\text{Total trouts}}{\text{Tagged trouts}}=\frac{48}{22}$