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MrMuchimi
3 years ago
10

Find the area of the polygon. 7 cm 20 cm 16 cm

Mathematics
1 answer:
lana [24]3 years ago
7 0

Answer:

140

Step-by-step explanation:

sorry if wrong!

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The circumference of a circle is 28π inches. What is the length of the radius of this circle?
devlian [24]

Answer:

The radius of the circle is 14 inches.

Step-by-step explanation:

How is the circumference of a circle related to its radius?

\displaystyle \text{Circumference} = \pi\times \text{Diameter} = \pi\;(2\times \text{Radius}).

In brief,

\text{Circumference} = 2\pi\times \text{Radius}.

For this question,

  • \text{Circumference} = 28\pi, and
  • \text{Radius} needs to be found.

Divide both sides of the equation by 2\pi:

\displaystyle \frac{\text{Circumference}}{2\pi} = \text{Radius}.

\displaystyle \text{Radius} = \frac{\text{Circumference}}{2\pi} = \frac{28\pi}{2\pi} = 14.

In other words, the radius of this circle is 14 inches.

6 0
3 years ago
Read 2 more answers
Anyone know what the answer is? I'd appreciate it if someone could help because im stuck
andrew-mc [135]

Answer:

100

Step-by-step explanation:

Isosceles triangle have 2 equal angles. Therefore the second angle in the triangle will also be 25.

Since the sum of angles in a triangle is 180.

180-(25x2) will give you the last angle in one of the triangles.

The other angle is identical so the angle at the top of the other triangle will also be 130.

The sum of angles in a circle is 360.

Therefore, angle x = 360-(130x2)

X= 100

7 0
3 years ago
Triangle ABC has verticals A (3,0),B (9,5)and (7,-8) find the length of AC in simplest radical form
AlladinOne [14]
length =  \sqrt{(0+8)^2 + (3-7)^2} =  \sqrt{64 + 16} =  \sqrt{80} = 4\sqrt{5}


Answer: Length = 4√5 units.
4 0
3 years ago
Are these fractions equivalent or nonequivalent?<br> 4x/7y 8x/14y
ivann1987 [24]

Answer:

\frac{8x}{14y}  =  \frac{ \frac{8x}{2} }{ \frac{14y}{2} }  =  \frac{4x}{7y}  \\

Hence, they are equivalent.

6 0
2 years ago
Write a standard form of a quadratic equation that has roots - 5/2 and 3.
lora16 [44]

Answer:

2x^2 - x - 15 = 0.

Step-by-step explanation:

In factor form this is

(x + 5/2)(x - 3) = 0

x^2 + 5/2x - 3x  - 15/2 = 0

x^2 - 1/2x - 15/2 = 0

Multiply through by 2:

2x^2 - x - 15 = 0.

6 0
3 years ago
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