All categories

3 years ago

Help what is the radius of the circle

Mathematics

2 answers:

Illusion [34]3 years ago

5 0

Answer:

the radius of a circle is the length from the midpoint of the circle to the circumference

Step-by-step explanation:

because circumference is π x d (diameter which 2x the radius)

you'll have to rearrange this equation to find the radius

circumference = π x 2r

radius = circumference / 2π

therefore the radius of the cirlce is 615.44 / 2π

= 97.95031817647607

= 97.95 rounded to two decimal places

erik [133]3 years ago

3 0

Answer: 615.44units

Step-by-step explanation:

You might be interested in

Two planes are orthogonal if their normal vectors are orthogonal. Find the equation of a plane that is orthogonal to the plane 3

erica [24]

Answer:

X-5Y-4Z+12=0

Step-by-step explanation:

Plan P1 = 3x-y+2z=1. with A=(1,1,2); B=(2,2,1); we must will find V1 from P1,

V1 =(3,-1,2) and AB = (2-1,2-1,1-2) = (1,1,-1) now we find V2 by vector product.

V2 =V1.X,AB = $\left[\begin{array}{ccc}i&j&k\\3&-1&2\\1&1&-1\end{array}\right] = i+2j+3k-(2i-3j-k)=V2=(-i+5j+4k)$ ; (aplying sarrus method)

according to general plan formula a(X-Xo)+b(Y-Yo)+c(Z-Zo); V=(a,b,c)

V2=(-1,5,4) ; A=(1,1,2); so -(X-1)+5(Y-1)+4(z-2)=0 → -X+1+5Y-5+4Z-8=0 →

-X+5Y+4Z+1-5-8=0 → -X+5Y+4Z-12=0 (-1) → Plan equation X-5Y-4Z+12=0

4 0

4 years ago

PLZZZ help with this its pretty simple!

marysya [2.9K]

Answer:

Ok so first you want to distribute the -1 in front of the 3x^2-7x+1

Which turns the problem into

X^2+5x-6 -3x^2+7x-1

Then just combine like terms

-2x^2+12x-7

Also ^ followed by the number is the exponent

5 0

3 years ago

Please help me on this question thanks ! I will mark you brainliest

igomit [66]

Answer:

3x+2°=65° (vert opp angles)

3x=65°-2°

=63°

x=63÷3

=21

7 0

3 years ago

Fifty subtracted from a number equals eighty. find the number

Sliva [168]

Answer:

130

Step-by-step explanation:

If you add fifty to eighty then you get 130, to double check just subtract 50 from 130 and then you get 80.

7 0

3 years ago

Read 2 more answers

Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.

sweet [91]

Answer:

D. Minimum at (3, 7)

Step-by-step explanation:

We can add and subtract the square of half the x-coefficient:

y = x^2 -6x +(-6/2)^2 +16 -(-6/2)^2

y = (x -3)^2 +7 . . . . . simplify to vertex form

Comparing this to the vertex for for vertex (h, k) ...

y = (x -h)^2 +k

We find the vertex to be ...

(3, 7) . . . . vertex

The coefficient of x^2 is positive (+1), so the parabola opens upward and the vertex is a minimum.

5 0

3 years ago