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IRINA_888 [86]
4 years ago
9

What is circumference? Please select all that apply:

Mathematics
1 answer:
Elina [12.6K]4 years ago
7 0

Answer:

A, C and D are correct.

\

Step-by-step explanation:

A is correct.

B is false; that space is the "area" of the circle.

C is true.  C = πd

D is true.  C = 2πr

E is false.  Way off.

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Brian notices that a 25-meter flagpole casts a 30 meter shadow. If a nearby telephone pole casts a 40-meter shadow, how tall is
solniwko [45]

Answer:its a 35 meter

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3 years ago
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kumpel [21]

Answer:

A relation is...

<u><em>A set of points that pair input values with output values.</em></u>

Is the following graph a function?

<u><em>Yes</em></u>

Step-by-step explanation:

<h2><u><em>Hope this helps and have a great day</em></u><em> :)</em></h2>
4 0
3 years ago
A triangle has a base of (3x + 7) and a height of (5x - 1). A second
Mars2501 [29]

Answer:

The difference between the area of the original triangle and the area of the new triangle is \Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1).

Step-by-step explanation:

The equation for the area of a triangle (A_{\bigtriangleup}) is:

A_{\bigtriangleup} = \frac{1}{2}\cdot b \cdot h

Where:

b - Base, dimensionless.

h - Height, dimensionless.

The expression for each triangle are described below:

First Triangle (b = 3\cdot x + 7, h = 5\cdot x - 1)

A_{\bigtriangleup,1} = \frac{1}{2}\cdot (3\cdot x+7)\cdot (5\cdot x -1)

Second Triangle (b = 3\cdot (3\cdot x+7), h = 2\cdot (5\cdot x -1))

A_{\bigtriangleup,2} = 3\cdot (3\cdot x+7)\cdot (5\cdot x -1)

The difference between the area of the original triangle and the area of the new triangle is:

\Delta A_{\bigtriangleup} = A_{\bigtriangleup,2}-A_{\bigtriangleup,1}

\Delta A_{\bigtriangleup} = 3\cdot (3\cdot x+7)\cdot (5\cdot x-1)-\frac{1}{2} \cdot (3\cdot x+7)\cdot (5\cdot x-1)

\Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1)

The difference between the area of the original triangle and the area of the new triangle is \Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1).

7 0
3 years ago
Simplify the following ratios: 2.1.1) 140:24​
gogolik [260]

Answer:

35/6

Step-by-step explanation:

We have, 140:24

Dividing by 4 we get 35:6

As there is no other common factor to divide with, 35:6 is the simplest form.

4 0
2 years ago
Please help! Thanks! (:
djyliett [7]
Ok this is simple. first, lets look at the 123 angle, so the entire line is 180. subtract 123 from 180 and you have 57. a triangle will always add up to 180 degress aswell. so add 58 and 57 and thats 115. so since a triangle will always add up to 180, subtract 115 from 180 and you have the missing angle:

65!
4 0
3 years ago
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