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bixtya [17]
3 years ago
7

The radius is 20. what's the length of arc AB?

Mathematics
1 answer:
AURORKA [14]3 years ago
3 0

Answer:yyghvggft

Step-by-step explanation:

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Please help don’t get it
Romashka-Z-Leto [24]

Answer:

A

Step-by-step explanation:

One complete turn is 1 perimeter (aka circumference).

We have to find the length it turned, hence, its circumference.

The formula for circumference (C) of a circle is:

C=2\pi r

Where r is the radius

The radius is HALF of diameter. Given diameter is 250, the radius is:

r = 250/2 = 125 feet

Now, substituting in formula we have:

C=2\pi r\\C=2\pi (125)\\C=250\pi\\C=785.4

So, it turned 785.4 feet with 1 rotation.

The correct answer is A

4 0
3 years ago
Which answer represents the series in sigma notation?
Nat2105 [25]
The answer is b.......

8 0
3 years ago
Read 2 more answers
Find the value of x.
omeli [17]

Answer:

x=45.5

Step-by-step explanation:

sum of angles of a quadrilateral is 360°

so 3x - 11+x+8+x-8+2x+7+x=360°

or 8x-4=360

or, x=364÷8

hence

x=45.5

8 0
3 years ago
PLEASE HELPP MEEEEE
pav-90 [236]
The smallest region that can be photographed is
5*7 = 35 square km
so we want to know how long it takes to zoom out to an area of
35 * 5 = 175 square km.

Notice that the length and width increase at the same rate, 2 km/sec, and they start out with a difference of two, so when the width has increased from 5 to x, the length will have increased from 7 to x+2. At the desired coverage area, then,
x(x+2) = 175
x^2 + 2x = 175
x^2 + 2x + 1 = 176 [completing the square]
(x+1)^2 = 176
x+1 = ±4√11
x = -1 ±4√11

Since a negative value for x is meaningless here, x must be
-1 + 4√11 = about 12.27 km
and the time it took to increast to that value was
(12.27 - 5) km / (2 km/sec) = about 3.63 seconds
6 0
3 years ago
The volume of a cylinder is 400x cm. The radius of the base of the cylinder is 4 cm. What is the height of the cylinder
irina1246 [14]

Answer: 8cm

Step-by-step explanation:

V=\pi r^2h

Solve for h;

h=\frac{V}{\pi r^2}

h=\frac{400cm^3}{(3.14)(4cm)^2}

h=7.96\\h=8

3 0
3 years ago
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