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grigory [225]
3 years ago
8

Find the radius of a circle with the circumference of 28.27 km. Explain your answer

Mathematics
2 answers:
maxonik [38]3 years ago
5 0

Answer:

radius= 4.5

Step-by-step explanation:

to find the radius of a circle given circumference you have to use the formula:

r=C/2π

divide: 28.27 / 2π

this equals

4.5

your welcome!

Ivanshal [37]3 years ago
3 0

Answer:

4.5

Step-by-step explanation:

r=c/2*pi.....28.27/2 times 3.14= 4.5 Hope this helped!

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Which choice is equivalent to the expression below? use the FOIL method. (√x-2)(√x+3)​
lora16 [44]

Answer:

x + √x - 6

Step-by-step explanation:

Multiply out (√x-2)(√x+3) using the FOIL method:

Multiply the First terms:  x

Multiply the Outside terms:  3√x

Multiply the Inside terms:  -2√x

Multiply the Last terms:  -6

Now combine these results.  We get:

x + √x - 6

6 0
3 years ago
Graph the system below and write its solution.
Diano4ka-milaya [45]

Answer:

See the graph attached. It has one solution: (6,-4)

Step-by-step explanation:

The slope-intercept form of a line is:

y=mx+b

Where m is the slope and b is the intersection of the line with the y-axis.

Given the first equation  y =\frac{-1}{2}x -1

You can identify that:

b=-1

Substitute y=0 to find the intersection with the x-axis

0 =\frac{-1}{2}x -1\\1(-2)=x\\x=-2

This line passes through the points (0,-1) and (-2,0)

Given the second equation:

-2 + y = -6

Solve for y:

y = -6+2\\y=-4

It passes through the point (0,-4).

Now, you can graph. See the figure attached.

It has one solution,which is the point of intersection of both lines:  (6,-4)

5 0
3 years ago
List all the factor pairs of 40
Zarrin [17]
2x20
1x40
4x10
5x8

All integers these multiply to 40
6 0
3 years ago
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(PLZ HELP 20pts)If the graph of function g is 6 units below the graph of function f, which could be function g? f(x)=-2x+7
defon

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C

Step-by-step explanation:

6 0
3 years ago
Which one is greater 7 pounds or 70 ounces
eimsori [14]

Answer:

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Step-by-step explanation:

1 lb = 16 oz

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8 0
2 years ago
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