All categories

3 years ago

I really need help on this

Mathematics

2 answers:

maxonik [38]3 years ago

8 0

I can help, just tell me, what type of math is it, out of,: Basic Math, Pre-Algebraic, Algebra, Trigonometry, Precalculus, Calculus, Statistics, Finite Math, linear Algebra, Chemistry or Graphing?

Alex Ar [27]3 years ago

6 0

Do you know the subject that the problem is about ?

You might be interested in

Hi, I have a Q, how do I use it?

anygoal [31]

Answer:

use what

Step-by-step explanation:

3 0

2 years ago

Please help me I’ve asked this questions several times and I really need help with this I do not understand it at all

Ulleksa [173]

Answer:

(-5,-2)

(-4,-3)

(-6,-1)

Step-by-step explanation:

-5(x)-2(y)=-7

-4(x)-3(y)=-7

-6(x)-1(y)=-7

6 0

2 years ago

Find the length of the arc and express your answer as a fraction times pie

Elina [12.6K]

Solution:

Given a circle of center, A with radius, r (AB) = 6 units

Where, the area, A, of the shaded sector, ABC, is 9π

To find the length of the arc, firstly we will find the measure of the angle subtended by the sector.

To find the area, A, of a sector, the formula is

$\begin{gathered} A=\frac{\theta}{360\degree}\times\pi r^2 \\ Where\text{ r}=AB=6\text{ units} \\ A=9\pi\text{ square units} \end{gathered}$

Substitute the values of the variables into the formula above to find the angle, θ, subtended by the sector.

$\begin{gathered} 9\pi=\frac{\theta}{360\degree}\times\pi\times6^2 \\ Crossmultiply \\ 9\pi\times360=36\pi\times\theta \\ 3240\pi=36\pi\theta \\ Divide\text{ both sides by 36}\pi \\ \frac{3240\pi}{36\pi}=\frac{36\pi\theta}{36\pi} \\ 90\degree=\theta \\ \theta=90\degree \end{gathered}$

To find the length of the arc, s, the formula is

$\begin{gathered} s=\frac{\theta}{360\degree}\times2\pi r \\ Where \\ \theta=90\degree \\ r=6\text{ units} \end{gathered}$

Substitute the variables into the formula to find the length of an arc, s above

$\begin{gathered} s=\frac{\theta}{360}\times2\pi r \\ s=\frac{90\degree}{360\degree}\times2\times\pi\times6 \\ s=\frac{12\pi}{4}=3\pi\text{ units} \\ s=3\pi\text{ units} \end{gathered}$

Hence, the length of the arc, s, is 3π units.

4 0

1 year ago

To find the height of a pole, a surveyor uses a theodolite. The theodolite is 4 ft tall. The surveyor stands 140 feet away from

MakcuM [25]

This is the answer hope it helps

4 0

3 years ago

The ordered pair (-4, -5) is a solution of the following system of equations 2x+y=13 19x+13y=15

liberstina [14]

Answer:

Step-by-step explanation

672

8 0

3 years ago