All categories

3 years ago

Explain why percents are rational numbers.

1 answer:

3 0

Yes since percents can be decimals and these decimals can be illustrated as fractions hence, vice-versa.

80%= 0.8 = 4/5

A rational number is any number or numerical value which can be possibly stated in a fraction form of numbers, it basically has a numerator and denominator. Furthermore, the values of the numerator and denominator is integers and doesn’t equal to 0. In this given case of 8 over 5 or 8/5 this fractional number can still be expressed in a standard numerical form with a decimal as 1.6 without repeating decimal values. Unlike irrational numbers which is not possible, take for instance 3.1416… and so on which cannot be “fractionized”.

You might be interested in

Please help ASAP please I’ll mark as brainlister

faust18 [17]

Problems

The bottom of the red figure should be long; similar to the top of the blue figure.

The top of the red figure should be the same as the bottom of the blue figure.

Red are: (1, -1), (4, -1), (1, -5), (3, -5), (2, -2), (2, -4), (3, -4), (4, -2), (4, -2)

red points should be:

(1, -1), (3, -1), (1, -5), (4, -5), (2, -2), (2, -4), (4, -4), (3, -2), (3, -2),

7 0

3 years ago

If the graph is reflected across the y-axis, what will be the equation of the new graph?

Bumek [7]

Answer:

$\displaystyle b)y = { 3}^{ - x} + 1$

Step-by-step explanation:

we are given a exponential function

$\displaystyle y = {3}^{x} + 1$

we want to figure out the equation of the new graph reflected across the y-axis

remember that,

$\rm\displaystyle (x,y) \xrightarrow{ \text{ reflection over y - axis}}( - x,y)$

let y be $3^x+1$ so,

$\rm\displaystyle (x,y) \xrightarrow{ \text{ reflection over y - axis}}( - x, {3}^{ - x} + 1 )$

hence,

the equation of the new graph

$\displaystyle y = { 3}^{ - x} + 1$

5 0

3 years ago

Read 2 more answers

Which expression is equivalent to?

balandron [24]

The answer is number 2

8 0

3 years ago

a medication prescription states 1/4 tablet twice a day per 20kg the peson weight is 211 pounds. how many tablets should be take

Black_prince [1.1K]

<h2>Hello!</h2>

The answer is: 1.187 tablets each time (twice a day)

From the statement we know that 0.25 tablet (1/4) should be taken twice a day per 20 kg, it makes 0.5 table a day, per 20 kg.

First, we need to convert the given weight unit (pounds) to kg:

$1 Pound=0.45Kg$

So,

$211Pounds*\frac{0.45Kg}{1Pound}= 94.95Kg=95Kg$

A weight of 95 Kg, means 4.75 times more than the given information of 0.5 table a day, per 20 Kg

$\frac{95Kg}{20Kg}=4.75$

Then,

$4.75*(0.5)=2.375$

So,

For a weight of 95 Kg, 2.375 tablets should be taken a day, or 1.187 tablets each time.

Have a nice day!

6 0

3 years ago

A veterinarian's office recorded one particular week that they had 50 patients. The following table shows the recorded number of

Gre4nikov [31]

Answer:

1. The correct answer is 46%

2. The correct answer is .07

3. The correct answer is (34%,58%)

4. The correct answer is (32%,60%)

Step-by-step explanation:

1. Let's calculate the percentage or proportion of patients that were dogs:

p = (7 + 4 + 5 + 5 + 2)/50 = 23/50 = 0.46

The correct answer is 46%

2. Let's estimate the standard error, using the given formula, this way:

S.e = √ (0.46 * 0.54)/50 = √0.049 = 0.07

The correct answer is .07

3. Let's calculate the confidence limits of the 90% confidence interval, this way:

Confidence limits = proportion +/- 1.645 * standard error

Confidence limits = 0.46 +/- 1.645 * 0.07

Confidence limits = 0.46 +/- 0.12

Confidence limits = 0.34, 0.58

The correct answer is (34%,58%)

4. Let's calculate the confidence limits of the 95% confidence interval, this way:

Confidence limits = proportion +/- 1.96 * standard error

Confidence limits = 0.46 +/- 1.96 * 0.07

Confidence limits = 0.46 +/- 0.14

Confidence limits = 0.32, 0.60

The correct answer is (32%,60%)

3 0

3 years ago