1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
skad [1K]
3 years ago
5

6/9 is a rational number. Select all the rational numbers that are equivalent to 6/9

Mathematics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

There will be lots

Step-by-step explanation:

It is actually infinite.

You might be interested in
There are 12 boys and 13 girls in a class. If the teacher randomly chooses a student's name out of a hat, what is the probabilit
Afina-wow [57]
12:13 is the answer
5 0
3 years ago
Read 2 more answers
Can someone answer questions 20-24 I need it for my math homework
navik [9.2K]
You know you have to draw the triangles right?
3 0
2 years ago
A. 29<br> B. 24<br> C. 20<br> D. 14
slava [35]
The answer is C. Hope that helps
3 0
3 years ago
Read 2 more answers
Change each of the following points from rectangular coordinates to spherical coordinates and to cylindrical coordinates.
FromTheMoon [43]

Answer and Step-by-step explanation: Spherical coordinate describes a location of a point in space: one distance (ρ) and two angles (Ф,θ).To transform cartesian coordinates into spherical coordinates:

\rho = \sqrt{x^{2}+y^{2}+z^{2}}

\phi = cos^{-1}\frac{z}{\rho}

For angle θ:

  • If x > 0 and y > 0: \theta = tan^{-1}\frac{y}{x};
  • If x < 0: \theta = \pi + tan^{-1}\frac{y}{x};
  • If x > 0 and y < 0: \theta = 2\pi + tan^{-1}\frac{y}{x};

Calculating:

a) (4,2,-4)

\rho = \sqrt{4^{2}+2^{2}+(-4)^{2}} = 6

\phi = cos^{-1}(\frac{-4}{6})

\phi = cos^{-1}(\frac{-2}{3})

For θ, choose 1st option:

\theta = tan^{-1}(\frac{2}{4})

\theta = tan^{-1}(\frac{1}{2})

b) (0,8,15)

\rho = \sqrt{0^{2}+8^{2}+(15)^{2}} = 17

\phi = cos^{-1}(\frac{15}{17})

\theta = tan^{-1}\frac{y}{x}

The angle θ gives a tangent that doesn't exist. Analysing table of sine, cosine and tangent: θ = \frac{\pi}{2}

c) (√2,1,1)

\rho = \sqrt{(\sqrt{2} )^{2}+1^{2}+1^{2}} = 2

\phi = cos^{-1}(\frac{1}{2})

\phi = \frac{\pi}{3}

\theta = tan^{-1}\frac{1}{\sqrt{2} }

d) (−2√3,−2,3)

\rho = \sqrt{(-2\sqrt{3} )^{2}+(-2)^{2}+3^{2}} = 5

\phi = cos^{-1}(\frac{3}{5})

Since x < 0, use 2nd option:

\theta = \pi + tan^{-1}\frac{1}{\sqrt{3} }

\theta = \pi + \frac{\pi}{6}

\theta = \frac{7\pi}{6}

Cilindrical coordinate describes a 3 dimension space: 2 distances (r and z) and 1 angle (θ). To express cartesian coordinates into cilindrical:

r=\sqrt{x^{2}+y^{2}}

Angle θ is the same as spherical coordinate;

z = z

Calculating:

a) (4,2,-4)

r=\sqrt{4^{2}+2^{2}} = \sqrt{20}

\theta = tan^{-1}\frac{1}{2}

z = -4

b) (0, 8, 15)

r=\sqrt{0^{2}+8^{2}} = 8

\theta = \frac{\pi}{2}

z = 15

c) (√2,1,1)

r=\sqrt{(\sqrt{2} )^{2}+1^{2}} = \sqrt{3}

\theta = \frac{\pi}{3}

z = 1

d) (−2√3,−2,3)

r=\sqrt{(-2\sqrt{3} )^{2}+(-2)^{2}} = 4

\theta = \frac{7\pi}{6}

z = 3

5 0
3 years ago
[20 POINTS] Find the area of the rectangle
zvonat [6]
5 points

Hope this helps

8 0
3 years ago
Other questions:
  • John says the transformation rule (x, y) es002-1.jpg (x + 4, y + 7) can be used to describe the slide of the pre-image (4, 5) to
    9·2 answers
  • Can someone please answer. There is one problem. There's a picture thank you!
    11·2 answers
  • Find the circumference leave the answer in terms of pi
    13·1 answer
  • Find the interest on €500 for 2 years at 4% per year
    11·1 answer
  • The sum of three numbers is 12. The second number is equal to the sum of the first and third numbers. Twice the first number exc
    13·1 answer
  • Please may help to solve this<br><br> a=3,b=1,c=0&amp;d=2<br> solve; A^3-3A+I2
    13·1 answer
  • Sherry bought a dozen daisies are $8.76 how much does a single daisy cost
    7·2 answers
  • if the circumference of a circle measures 3π cm, what is the area of the circle in terms of π? A) 3 4 π cm2 b) 3 2 π cm2 c) 9 4
    14·2 answers
  • sample daat reflects shipments received from 3 different vendors Vendor Defective Acceptable 1 16 133 2 25 74 3 24 187 what is c
    14·1 answer
  • What do i multiply by to get 187? 187 is the total
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!