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Olenka [21]
3 years ago
15

Find the speed ..

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0
38
430
49
mph I think... maybe
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Sin10°-cos10° product and evaluate​
Montano1993 [528]

Question should be sin 20 cos 10 + cos 20 sin 10

remember sin (a+b) = sin a cos b + cos a sin b ?

sin 20 cos 10 + cos 20 sin 10

= sin (20+10)

= sin 30

= 1/2

6 0
2 years ago
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Brianna went shopping for a new video game because of a sale. The store was offering a 15% discount. If the price on the tag was
ICE Princess25 [194]

Answer:

Is it going to be $19.55?

Step-by-step explanation:

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3 years ago
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How do I do this? It is a regular hexagon with a height of 30. We have to find the perimeter of it.
Sliva [168]

Answer:

The radius of a hexagon is called the apothem, which in this case is 15.

We need to know the side length which is found by the equation:

side length = apothem * 2 * (tan (180 / #sides))

side length = apothem * 2 * (tan (180 / 6))

side length = 15 * 2 * (tan (30 degrees))

side length = 30 * .57735

side length = 17.3205

We need the perimeter of the hexagon which equals the side length times six.

perimeter = 6 * 17.3205 = 103.923

Source: https://www.1728.org/polygon.htm

Step-by-step explanation:

8 0
3 years ago
If X = 2 centimeters, Y = 5 centimeters, and Z = 5 centimeters, what is the area of the object?
Elena L [17]

Answer:  35 cm^2

Step-by-step explanation:

<em>Area of trapezium = </em>

2X = 2 + 2 = 4 cm

2Z = 5 + 5 = 10 cm

Y = 5 cm

\dfrac{  \left( 4+10  \right)    }{ 2  }   \times  5

                 |

                 |--------> 35 cm^2

6 0
1 year ago
Which equation is in slop-intercept form?
frosja888 [35]

Step-by-step explanation:

Only D, y = 3x + 12 is in slope-intercept form.

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3 years ago
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