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3 years ago

A circle has a circumference of 7850 units. What is the radius?

Mathematics

1 answer:

wel3 years ago

6 0

Answer:

About 1249.366

Step-by-step explanation:

After plugging the circumference into the formula c=2π*r and solving, we get about 1249.366. You can round it however necessary :)

Hope I helped!

p.s: there's calculators online that can help you convert between circumference, diameter, area, and radius! Here's a link to one that I use!

https://www.omnicalculator.com/math/circumference

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Help me please I have a dba and I don’t know the answer!!!

NNADVOKAT [17]

Answer:

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how this can be of help

7 0

3 years ago

Four time a number r plus half a number s equals 12. Twice the number r plus one fourth of the numbers s equals 8. What are the

Snezhnost [94]

The system of equations have no solution.

Explanation:

The equations are $4r+\frac{1}{2}s=12$ and $2r+\frac{1}{4} s=8$

To find the two numbers, let us solve the equations using substitution method.

From the equation $2r+\frac{1}{4} s=8$ , let us determine the value of r,

$\begin{aligned} 2 r+\frac{1}{4} s &=8 \\ 2 r &=8-\frac{1}{4} s \\ r &=\frac{1}{2}\left(8-\frac{1}{4} s\right) \\ r &=4-\frac{1}{8} s \end{aligned}$

Let us substitute the value of r in $4r+\frac{1}{2}s=12$ , we get,

$\begin{aligned} 4\left(4-\frac{1}{8} s\right)+\frac{1}{2} s &=12 \\ 16-\frac{1}{2} s+\frac{1}{2} s &=12 \\ 16 &=12 \end{aligned}$

which is not possible.

This means that the system has no solution.

6 0

3 years ago

How to solve algebraic equations with 2 variables

melisa1 [442]

You re write the equation, so when the equations are added one of the variables are eliminated

8 0

3 years ago

the area of a triangle is 384 square feet. If its base is 8 feet longer than its altitude, find the length of the base and the a

REY [17]

A=1/2bh
b=8+h
A=384

384=1/2(bh)
times 2
768=bh
sub
768=b(8+b)
768=8b+b^2
minus 768 both sides
0=b^2+8b-768
factor
0=(b-24)(b+32)
set to zero
b-24=0
b=24

b+32=0
minus 32
b=-32
false, legnths cannot be negative

b=24
24=8+h
minus 8
16=h

base=24ft
altetude=16ft

6 0

3 years ago

Show work please thank you

ira [324]

1) 12 * 9 = 108 cm² - part 1
2) 12 - 3 - 3 = 6 cm
3) 6 * 4 = 24 cm² - part 2
4) 108 + 24 = 132 cm ² - the area.

3 0

3 years ago