Answer:
378
Step-by-step explanation:
Answer:
286.48 miles
Step-by-step explanation:
The desired arc length is 100 miles and the desired change in direction is 20 degrees. The equation that describes arc length as a function of the radius is:
![Arc = \frac{\theta}{360}*2\pi r](https://tex.z-dn.net/?f=Arc%20%3D%20%5Cfrac%7B%5Ctheta%7D%7B360%7D%2A2%5Cpi%20r)
Applying the given values:
![100 = \frac{20}{360}*2\pi r\\r = \frac{100*18}{2\pi}\\r=286.48\ miles](https://tex.z-dn.net/?f=100%20%3D%20%5Cfrac%7B20%7D%7B360%7D%2A2%5Cpi%20r%5C%5Cr%20%3D%20%5Cfrac%7B100%2A18%7D%7B2%5Cpi%7D%5C%5Cr%3D286.48%5C%20miles)
A radius of 286.48 miles should be used.
Answer:
All the coordinates are changed to
(x, y) ⇒ (2x, 2y)
Step-by-step explanation:
Given - A triangle is to be dilated with the origin as the center of dilation and with a scale factor of 2.
To find - Which answer choice correctly maps this dilation algebraically?
Proof -
Let ABC is a triangle where A, B, C are the vertices of the triangle respectively.
Now,
Let the coordinates be (x, y)
If a triangle is to be dilated with the origin as the center of dilation and with a scale factor of a , then the coordinated be changes as
(x, y) ⇒ (ax, ay)
Here given , a = 2
So, all the coordinates are changed to
(x, y) ⇒ (2x, 2y)
The answer is B, 7i.
sqrt(-49)
Pull out an i.
i*sqrt(49)
Take the square root to get 7i.
⭐ Answered by Hyperrspace (Ace) ⭐
⭐ Brainliest would be appreciated, I'm trying to reach genius! ⭐
⭐ If you have questions, leave a comment, I'm happy to help! ⭐
Answer:
A is 62 b is 54 c is 62 and d is 62
And 7
Step-by-step explanation:
Since it equals to 180 you add 62 and 54 which gives u 118 then subtract it
Not sure about the second one