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Lapatulllka [165]
3 years ago
7

Find the lcm 15 and 20​

Mathematics
2 answers:
son4ous [18]3 years ago
7 0
Answer: 60
Solution:
15 20
/ \ / \
3 5 2 10
/ \
2 5
3*5*2*2=60
Anestetic [448]3 years ago
5 0

Answer:

5

Step-by-step explanation:

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I really need help with this fast!!
ss7ja [257]

Answer:

Hello. y=1/2x-2

Step-by-step explanation:

The line that is perpendicular to this line ،its slope must be 1/2

So:

y - y0 = m(x - x0) \\ y - 2 =  \frac{1}{2} (x - 8)  \\ y =  \frac{1}{2} x  - 2

6 0
3 years ago
What angles of rotational symmetry are there for a regular hexagon?
adell [148]

Answer:

60°, 120°, 180°, 240° and 300°

Step-by-step explanation:

In case of a regular hexagon, there is a set of six movements to complete its one rotation. Now in one rotation, it will complete 360° of its circular motion. Now the formula to calculate the angle of rotation for any shape with equal length of its sides is:

Angle of rotation (Ф) = 360/Total number of sides

In this case, Ф = 360/6

                    Ф = 60

This formula is valid for every shape with equal sides, like in case of pentagon you will have 360/5 to calculate the angle of rotation.

Now in case of hexagon, at rotation of 60°, its rotation is symmetrical, which means rotation will not change its physical appearance, this is the case for next 60° rotation as well, or you can say that for 120° (60° before and 60° afterwards). This suit will follow for all the angles given in the answer section.

8 0
3 years ago
The mean of a population being sampled is 64, and the standard deviation is 6. If the sample size is 50, the standard error of t
alexira [117]
<span><span><span>.........
.........
</span></span></span>the answer is .85
6 0
3 years ago
What is 45/90= to <br> i need help
Sati [7]

Answer:

1/2

Step-by-step explanation:

45/90 ÷ 45/45 = 1/2

5 0
3 years ago
Read 2 more answers
Can u show me how to solve this problem 0.11 times 0.91
lisov135 [29]

Answer:

0.1001

Step-by-step explanation: Your answer is 0.1001

 0.91

 <u> 0.11</u>

   1011

 0990

<u>00000</u>

0.1001


Hope this helps you!!! :)

3 0
3 years ago
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