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Olin [163]
2 years ago
7

Help help math math math

Mathematics
2 answers:
marysya [2.9K]2 years ago
6 0
507 i think. you just square 13 then multiply that by pi which is 3
dybincka [34]2 years ago
6 0

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here's the solution ~

The Radius of the circle is 13 ft

now, use the given formula to find the Area of circle ~

\qquad \sf  \dashrightarrow \: \pi {r}^{2}

\qquad \sf  \dashrightarrow \: 3{(13)}^{2}

\qquad \sf  \dashrightarrow \: 3(169)

\qquad \sf  \dashrightarrow \: 507

Therefore, Area of the circle is 507 ft²

You might be interested in
Consider the quadratic function f(x) = –2x2 + 4x – 2. Find the y-intercept and the equation of the axis of symmetry.
RoseWind [281]

Answer:

The y-intercept is -2

The equation of the axis of symmetry is x = 1 ⇒ 3rd answer

Step-by-step explanation:

* Lets revise the general form of the quadratic function

- The general form of the quadratic function is f(x) = ax² + bx + c,

 where a, b , c are constant

# a is the coefficient of x²

# b is the coefficient of x

# c is the y-intercept

- The meaning of y-intercept is the graph of the function intersects

 the y-axis at point (0 , c)

- The axis of symmetry of the function is a vertical line

  (parallel to the y-axis) and passing through the vertex of the curve

- We can find the vertex (h , k) of the curve from a and b, where

 h is the x-coordinate of the vertex and k is the y-coordinate of it

# h = -b/a and k = f(h)

- The equation of any vertical line is x = constant

- The axis of symmetry of the quadratic function passing through

  the vertex then its equation is x = h

* Now lets solve the problem

∵ f(x) = -2x² + 4x - 2

∴ a = -2 , b = 4 , c = -2

∵ The y-intercept is c

∴ The y-intercept is -2

∵ h = -b/2a

∴ h = -4/2(-2) = -4/-4 = 1

∴ The equation of the axis of symmetry is x = 1

4 0
2 years ago
3-1/3n< 6;n>-9 What is n???
r-ruslan [8.4K]

Answer:

i don't understand your question, but i'll try to the best of my ability.

the answer to that is:

-8.33333333333

Step-by-step explanation:

let me break this down into a way you might understand.

1: 3-1=2

2: 2 divided by 3=0.66666666666.

3: i don't know if the "< 6;n>", was meant to be in the equation, so i just added the rest of it up.

if that's not right let me know. i'm pretty clueless sometimes, and this might just be a higher level of math that i don't know.

you're welcome though, (i suppose..) and have a great day.

6 0
2 years ago
Help me please ASAP!!!!
Alex

ummmmmm you dont need the explanation and I'd rather not type but trust me its d, good luck!

4 0
3 years ago
Read 2 more answers
Help with this question, please! The answer with the red arrow is INCORRECT!! HELP ASAP!
Vilka [71]

Answer:

the area is multiplied by 3

Step-by-step explanation:

if the diagonal is multiplied by 3 than the area will "grow larger" by 3.

4 0
2 years ago
Solve for x radical forms
vova2212 [387]

Answer:

in right angled triangle ABC

by using Pythagoras law

h²=p²+b²

x²=7²+10²

x=√149=12.21cm

8 0
2 years ago
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