Answer:
8
Step-by-step explanation:
Since she now has 12, subtract 8 because of the 8 she before added.
Now, you're left with 4.
The 4 is half of what she originally had, leading up to the fact that the answer is 8.
Sally began with eight comic books.
Answer:
no because 30 is not a perfect square number
Step-by-step explanation:
A rotation is a transformation that preserves figure shape, sizes and angles.
Therefore,
1. The corresponding side lengths in the image and the pre-image are equal. Thus, option B is false.
2. Statement that all corresponding points on the image and pre-image are equidistant to point N is true, because rotation preserves the lengths of segments. This means that
You also get that option A is true.
3. The image is the same size and shape as the pre-image is true statement according to the rotation properties.
Answer: option A, C and D are true.
Answer:
m = 13
Step-by-step explanation:
Given
m - 5 = 8 ( isolate m by adding 5 to both sides of the equation )
m = 8 + 5 = 13
You have to find the cos of angle A, so use the Pythagorean equation and trig laws to find the other side of the triangle created by angle A. 3^2 + x^2 = 5^2. x=4. This means cos(A) = 4/5). Make both cos (A) and cos (B) have equal denominators, and add. 148/185 + 60/185 = 208/185. This answer is correct, though it doesn’t appear to be any of the answers you wrote, so either those answers are wrong or you wrote something incorrectly in the problem.