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3 years ago

Work out the value of x

Mathematics

1 answer:

GREYUIT [131]3 years ago

6 0

A full circle is 360°.

x + 3x + 90° = 360°

4x = 360° - 90°

4x = 270°

4x/4 = 270°/4

x = 67.5°

Hope it helps! Make me brainliest if it’s correct.

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A DVD with a radius of 6 centimeters rotates at a speed of 243 revolutions per minute. Find the liner speed in centimeters per s

saul85 [17]

Answer:

152.7 cm/s

Step-by-step explanation:

The radius of DVD, r = 6 cm

The angular speed of DVD, $\omega=243\ rev/min=25.45\ rad/s$

We need to find the linear speed of the DVD.

The relation between linear speed and angular speed is given by :

$v=r\omega\\\\v=0.06\times 25.45\\\\v=1.527\ m/s$

v = 152.7 cm/s

So, the linear speed of the DVD is 152.7 cm/s.

5 0

2 years ago

A tank having length, breadth and height 10 m, 9 m and 8 m respectively. How much petrol does it hold? Ans: 720000 liter

Valentin [98]

<h2>Answer:</h2>

720000 liter

<h2></h2><h2>Step-by-step explanation:</h2>

$Known:\ a=10\ m,b=9\ m,h=8\ m.$

$Because:\ V=abh\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (Volume\ caculation\ formula)$

$Thus:\ V=10\times9\times8=720\ m^3$

$Because\ 1\ m^3=1000\ L\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (unit\ conversion)$

$Thus\ 720\ m^3=720000\ L$

<em>I hope this helps you</em>

8 0

2 years ago

A coin is tossed 50 times, and the number of times heads comes up is counted. Which of the following statements about the distri

TEA [102]

Answer:

based on the fact there are no listed choices, a true statement would be about how the number of times heads came up would be about 50% or 25 times

Step-by-step explanation:

5 0

2 years ago

What’s 3x+6y=12 in the form y=mx+b

zhenek [66]

Hey there!

3x+6y=12

Divide both sides by 3 and your equation would now look like:
x+2y= 4
Move the x to the other side
2y= -x+4
Seprate the y by dividing both sides by 2
y= $\frac{1}{2}$ x+2

4 0

3 years ago

Read 2 more answers

51 is 33 1/3 of what number?

nevsk [136]

Answer:

$\boxed{\frac{153}{100}\:\:Or\:\:1.53}$

Step-by-step explanation:

Let the number be $n$ .

Then,

$33\frac{1}{3} \tmes n=51$

This implies that;

$\frac{100}{3} n=51$

We multiply both sides by $\frac{3}{100}$ to obtain;

$\frac{3}{100} \times \frac{100}{3}n=\frac{3}{100} \times 51$

$\Rightarrow n=\frac{3}{100} \times 51$

$\Rightarrow n=\frac{153}{100}$

$\Rightarrow n=1.53$

5 0

3 years ago

Read 2 more answers

Work out the value of x ​

Work out the value of x