MATHEMATICS HIGH SCHOOL

The function f(r) gives the area of a circle with radius r. It can be written in equation form as fr) = 3.14/2². What is f(5)?

Answers

Answer 1

Answer:

Answer:

basically all u do is sub in 5 for r.

Step-by-step explanation:

f(5) = 3.14 * 5^2

f(5) = 3.14 * 25

f(5) = 78.50 <===

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a pumpkin pie costs $12.55 at a bakery. if the pie has a diameter of 12 inch. what is the cost per square inch of the pie?

PLZ HELP ASAP>>>>>>>Select all that apply. Which of these polygons is not formed by the cross-section created when a plane intersects a cube? Select all that are possible. -square
-circle
-pentagon
-trapezoid
-triangle
-rectangle

Answers

The correct answer is:

A circle.

Explanation:

Since a cube has no curved faces, a plane will not be able to intersect a cube in such a way to create a cross section with any curves. This eliminates circle.

A square is created when a cube is intersected by a plane parallel to its base.
A pentagon is created when a cube is intersected by a plane in all but 1 face.
A trapezoid is created when a cube is intersected by a plane in 2 pairs of opposite faces, at an angle.
A triangle is created when a cube is intersected by a plane in 3 adjacent faces.
A rectangle is created when a cube is intersected by a plane in 2 pairs of opposite faces.

Answer:

Step-by-step explanation:

circle, octagon

A parabola has a vertex at (0,0). The focus of the parabola is located on the positive x-axis. Which part of the graph will the directrix pass through?

Answers

The directrix will pass through the negative x-axis

The given parameters are:

Vertex = (0,0)

Focus = Positive x-axis

Given that the vertex is at the origin, the directrix would be on the opposite side of the focus

This means that:

The directrix will pass through the negative x-axis i.e. quadrant II and III

Answers

A prime number has only itself and 1 as factors
A composite number can be divided evenly by a number that is not itself or 1
Neither would be 1 and negative numbers, as 1 only has one factor (itself) and the terms prime and composite do not include negative numbers.
9 is perfectly divisible by 3 so it is composite.

Answer:

9 has the following factors: 1,9,3

Thus, it is composite

Step-by-step explanation:

Seven less than twice a number is greater then five more than the same number. which integer satisfies this inequality? 1
2
12
13

Answers

13
just use trial and error. PLUS since *the integer x 2* needs to be greater than that *integer + 5*, you already know that the number needs to be greater than 5.

Accumulated depreciation of a particular plant asset refers to: half-yearly depreciation total depreciation. or neither?

Answers

Accumulated depreciation of a particular plant asset refers to neither the half-yearly depreciation nor total depreciation.

Accumulated depreciation is the total depreciation expense reported since the plant asset was bought. Its amount is used to determine the book value or carrying value of the plant asset.

When the plant asset is fully depreciated, that is only the time when accumulated depreciation is equal to the total depreciation.

90 is 50% of what number? Answer choices are 45, 120, ,180