Answer:
(A)Z(-3,-7)
Explanation:
The rotation of a point (x,y) by 180 degrees gives the point (-x,-y).
That is:
If the image point after rotation is (3,7), the coordinates of the pre-image will be:
The correct option is A.
Answer:
x = 70
Step-by-step explanation:
Since 2 sides are equal then the triangle is isosceles with 2 congruent base angles , then
x = = = 70
Answer:
x=5
Step-by-step explanation:
We simplify the equation to the form, which is simple to understand
3x+5-5=20-5
We move all terms containing x to the left and all other terms to the right.
+3x=+20-5-5+5
We simplify left and right side of the equation.
+3x=+15
We divide both sides of the equation by 3 to get x.
x=5
1 hour is 60 minutes
6 hours x 60 = 360 total minutes
Divide total time by number of lessons:
360/8 = 45
Each lesson was 45 minutes
Answer:
Infinity
Step-by-step explanation:
x+8 = x+8
-x . -x
8 = 8 = always true