A(n) _____ that is perpendicular to a chord bisects the chord.radius
chord
angle
diameter

Answers

Answer 1

Answer: The answer to this item is the first choice, radius. The line formed by the radius to the chord of the circle which forms a right angle with the chord is also the perpendicular bisector of the chord. The answer therefore to thisi tem is the first choice, radius.

Answer 2

Answer:

(D) is your best choice to choose.

Step-by-step explanation:

a diameter perpendicular to a chord bisects the chord and its arc.

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Need Help What Is -10r+9r

Answers

The value for the expression -10r + 9r is -1r.

what is Algebra?

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

-10r+9r

Now, perform operations to solve

=-10 r + 9r

= r( -10 + 9)

Using properties of integers

(-) x (+ )= -

So,

= r( -1)

= -1r

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Answer:

-1r

Step-by-step explanation:

On a coordinate plane, a parabola opens up. It goes through (negative 2, 4), has a vertex at (0.25, negative 6), and goes through (2, 0).Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Select two options.

The domain of the function is the set of all values x such that x is greater than or equal to one-quarter.
The range of the function is all real numbers.
The vertex of the function is (one-quarter, negative 6 and one-eighth).
The function has two x-intercepts.
The function is increasing over the interval (negative 6 and one-eighth, ∞).

Answers

The statements true about the the function f(x) = 2x2 – x – 6 are-

The vertex of the function is (one-quarter, negative 6 and one-eighth).
The function has two x-intercepts.

What is vertex of parabola?

The vertex of parabola is the point at the intersection of parabola and its line of symmetry.

Now the given function is,

f(x) = 2x^2 – x – 6

Also, it is given that the vertex is located at (0.25, -6) and the parabola opens up, the function has two x-intercepts.

Comparing the given function with standard form,

f(x) = a x^2 bx + c

By comprison we get,

a = 2

b = -1

c = -6

Now, x-coordinate of vertex is given as,

x = -b/2a

put the values we get,

x = -(-1)/2*2

or, x = 1/4

Put the value of x in given function, so y-coordinate of the vertex is given as,

f(1/4) = 2(1/4)² - 1/4 - 6

= -49/6

= -6 1/8

Hence, The statements true about the the function f(x) = 2x2 – x – 6 are-

The vertex of the function is (one-quarter, negative 6 and one-eighth).
The function has two x-intercepts.

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Answer:

The vertex of the function is (one-quarter, negative 6 and one-eighth).

The function has two x-intercepts.

Step-by-step explanation:

The answer above is correct.

Write a statistical question that might have been asked to gather the data. Then explain why it is statistical.

Answers

The statistical question could be How much time do people spend in the water park.

What is Statistics?

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

Hours Spent at Water Park

Hours Tally

4 4

5 5

6 3

7 4

These data could be the results of a survey whose target was to determine how many hours people spent at a water park.

The size of the sample should be the number of tally, which is 4 + 5 + 3 + 4 = 16.

And the question most likely was made at the exit of a water park, when the people were leaving the park.

Thus, the statistical question could be How much time do people spend in the water park?

It is a statistical because the survey is made to a sample of the people who went to the water park instead to all the people.

Hence, the statistical question could be How much time do people spend in the water park?

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Answer:

sample responce: How many hours did you spend at the water park today?” It is statistical because the responses will vary among individuals and the responses will be numeric

Step-by-step explanation:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 94%, how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 22 years.