If he spent 2.25 hours/135 minutes on his french homework and 25 minutes longer than 135 minutes on math homework, he spent 160 minutes on math homework (or you could write it 2.66667 hours)
Answer:
1.
a) isosceles right triangle
b) scalene triangle
c) isosceles triangle
d) equilateral triangle
2. 53 degrees
3. Yes. You can use the side-side-side (SSS) postulate because side QR and side SR are shown as congruent, and side QP and SP are also congruent. Since you know that the other two sides are congruent, then that means that the last side must be congruent as well.
Step-by-step explanation:
Answer:
Step-by-step explanation:
use the website math_way. Literally just type math_way into a search engine, then it will be the first thing to come up.
Answer:
the origin, (0, 0)
Step-by-step explanation:
The coordinates of A' are 1/2 those of A, meaning each has been multiplied by the scale factor 1/2. When the dilated points are all the original points multiplied by the scale factor, the center of dilation is the origin.
_____
For center of dilation Q, the image of a point A after dilation by a factor of k is ...
A' = kA + (k-1)Q
Then for points A, A', and dilation factor k, the center of dilation can be found to be ...
(A' -kA)/(k-1) = Q
Here, that is ...
Q = ((-2, -2) -(1/2)(-4, -4))/(1/2 -1) = (0, 0)/(-1/2)
Q = (0, 0)
