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Volgvan
3 years ago
13

Do these ratios form a proportion?

Mathematics
2 answers:
nikklg [1K]3 years ago
6 0

Answer:

ha bhai.......yes..........

Georgia [21]3 years ago
3 0

Answer:

Yes these ratios do form a proportion :)

Step-by-step explanation:

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Caroline knows the height and the required volume of a cone-shaped vase she’s designing. Which formula can she use to determine
timama [110]

Answer:

Option B. r=\sqrt{\frac{3V}{\pi h}}

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2} h

Solve for the radius r

That means-----> isolate the variable r

Multiply by 3 both sides

3V=\pi r^{2} h

Divide by (\pi h) both sides

r^{2}=\frac{3V}{\pi h}

square root both sides

r=\sqrt{\frac{3V}{\pi h}}

4 0
3 years ago
Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x &lt; 0<br> Is f a probability density function?
Lynna [10]

Yes. f(x) is a PDF if

• f(x) \ge 0 for all x in the support; this is true, since e^{-x}>0 for all x, and multiplying a positive number x doesn't change this fact;

• the integral of f(x) over its support is 1; this is also true, since

\displaystyle \int_{-\infty}^\infty f(x) \, dx = \int_0^\infty xe^{-x} \, dx = 1

which can be computed by parts.

3 0
1 year ago
If cos x=8/17, and 270° &lt; x &lt; 360°<br> what is cos(2x)?
svp [43]

Answer:  \bold{-\dfrac{161}{289}}

<u>Step-by-step explanation:</u>

Given: cos x = \dfrac{8}{17}, x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

8² + y² = 17²    

      y² = 17² - 8²

      y² = 289 - 64

      y² = 225

      y = 15

→    sin x = -\dfrac{15}{17}

Use the double angle formula to find cos (2x):

cos (2x) = cos^2 x - sin^2 x\\\\.\qquad=\bigg(\dfrac{8}{17}\bigg)^2-\bigg(-\dfrac{15}{17}\bigg)^2\\\\\\.\qquad=\dfrac{64}{289}-\dfrac{225}{289}\\\\\\.\qquad=-\dfrac{161}{289}

             

8 0
3 years ago
Read 2 more answers
Performance Task: Going on a Round Trip
dmitriy555 [2]

Answer:

nice question you asked me dear

6 0
3 years ago
Find the volume (Don't forget your UNITS) *
Radda [10]

Answer:

135 cm³

Step-by-step explanation:

  1. To find volume: you multiply length*width*height

    2. l*w*h

    3. 6*5*4 1/2

    4. 6*5=30

    5. 30*4 1/2=135

    6. 135 cm³

Hope this helped!! :)

Stay safe and have a wonderful day/night!!!!!

Brainliest?!?!

5 0
2 years ago
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