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ale4655 [162]
3 years ago
14

Select all the statistical questions

Mathematics
1 answer:
mojhsa [17]3 years ago
3 0

Answer:

B and C

Step-by-step explanation:

A general way to know this is, if the answer can be given as a rate, percentage, or probability, then this is a statistical question

If the answer is yes, no, true, false, or something exact, then the question is not statistical.

Let's analyze the given questions:

a) "How many cups are in a gallon?"

There is an exact number of cups in a gallon (16) so this is not an staistical question.

b) "Which measure spoon do home backers use most frequently?"

While here the answer may be something like "teaspoon", the root of the answer is a percentage, here we actually would see the percent of home backers (so we need to find a sample, study that sample, etc) that use each spoon, and based on that, we could conclude what is the correct answer, then this is a statistical question.

c) "On average, how much salt do professional pastry chefs use in pie crust?"

Here we need to find a mean value, so we would need to do a survey and etc, then this is a statistical question.

d) "Which is larger, 17 ounces or 2 cups?"

Here we have an exact solution, so this is not a statistical question.

e) "Did a specific store sell more measuring cups or measuring spoons on a given day?"

Here we just need to compare the two numbers:

number of measuring cups sold = k

number of measuring spoons sold = m

And we need to see which one is larger, so the answer is exact, thus, this is not a statistical question.

This may be similar to option B, the difference is that in option B we are talking about all home backers, so we need to find a sample and do statistics, while in this case, we are talking about a specific store.

Then the correct options are: B and C

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3x + 2 ≤ 14 <br><br>-5 + 2x &gt; 15 * <br><br>-2x + 4 ≥ 18 <br><br>HaLp i don't gets
sweet-ann [11.9K]

9514 1404 393

Answer:

  1. x ≤ 4
  2. x > 10
  3. x ≤ -7

Step-by-step explanation:

We're guessing you want to solve for x in each case. You do this in basically the same way you would solve an equation.

1. 3x +2 ≤ 14

  3x ≤ 12 . . . . . subtract 2

  x ≤ 4 . . . . . . . divide by 3

__

2. -5 +2x > 15

  2x > 20 . . . . . . add 5

  x > 10 . . . . . . . . divide by 2

__

3. -2x +4 ≥ 18

  4 ≥ 18 +2x . . . . . add 2x

  -14 ≥ 2x . . . . . . . subtract 18

  -7 ≥ x . . . . . . . . . divide by 2

_____

<em>Additional comment</em>

The statement above that the same methods for solving apply to both equations and inequalities has an exception. The exception is that some operations reverse the order of numbers, so make the inequality symbol reverse. The usual operations we're concerned with are <em>multiplication and division by a negative number</em>: -2 < -1; 2 > 1, for example. There are other such operations, but they tend to be used more rarely for inequalities.

You will note that we avoided division by -2 in the solution of the third inequality by adding 2x to both sides, effectively giving the variable term a positive coefficient. You will notice that also changes its relation to the inequality symbol, just as if we had left the term where it was and reversed the symbol: -2x ≥ 14 ⇔ -14 ≥ 2x ⇔ x ≤ -7 ⇔ -7 ≥ x

5 0
3 years ago
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X3 + 2x2 - 48x<br> Help please
lutik1710 [3]

Answer:

0?

Step-by-step explanation:

4 0
3 years ago
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I know the answer to 255.5 ➗ 7 but how would you write it out.. (I'm not smart)
Ainat [17]
There are several ways such as
255\frac{1}{2} / 7

First put it in the decimal equation
Since there is a decimal in the number being divided(255.5), you move the decimal so that it is a whole number(2555) but since you move the decimal place once, you do the same to the 7 so that it is now 70. So now it's 2555/70 which looks like 365 but then, you have to place the decimal value so that it is now 36.5
This is what you use to divide as shown.

3 0
3 years ago
Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply.
tatiyna

Use rounding to get -6(0.2), and then multiply.

Use compatible numbers, such as -6(0.5), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Estimate -6.1(0.22)

Answer:

Use rounding to get -6(0.2), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Round the factors to the nearest whole number, and then multiply.

Step-by-step explanation:

Actual answer:

-6.1(0.22) = -1.342

Estimate answer:

-6 (.2) = 1.2

5 0
2 years ago
NO LINKS!! Please help me with this Geometry part 15​
avanturin [10]

The converse statement  is; If I have two ears, then I am a bunny

The inverse statement  is; "If I am not a bunny, then I don't have two ears."

The contrapositive statement is; If I don't have two ears, then I am not a bunny.

<h3>How to Interpret Conditional Statements?</h3>

A conditional statement is a statement that can be written in the form “If P then Q,” where P and Q are sentences

We are given the conditional statement;

If I am a bunny, then I have two ears

To form the converse of the conditional statement, we will interchange the hypothesis and the conclusion. The converse statement of "If it rains, then they cancel school" is expressed as "If they cancel school, then it rains."

Thus, the converse of our statement "If I am a bunny, then I have two ears." is;

If I have two ears, then I am a bunny

To form the inverse statement of the conditional statement, we will take the negation of both the hypothesis and the conclusion. The inverse of “If it rains, then they cancel school” is expressed as “If it does not rain, then they do not cancel school.”

Thus, the inverse of our statement "If I am a bunny, then I have two ears." is;

"If I am not a bunny, then I don't have two ears."

The contrapositive of our conditional statement is;

If I don't have two ears, then I am not a bunny.

Read more about Conditional Statements at; brainly.com/question/11073037

#SPJ1

4 0
1 year ago
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