Answer: The value of x is 6. The measure of angle B is 20 degrees.
Step-by-step explanation:
3x + 2 + 55 = 13x- 3
3x + 57 = 13x -3
-3x -3x
57 = 10x -3
+3 +3
60= 10x
x= 6
3(6) +2 = m∠B
20= m∠B
4. figure A is a trapezoid the parallel sides are the bases and the other sides are the legs.
5. sum of interior angles is 360 to find the other answer subtract all known angles from 360.
6. figure B is a parallelogram. if angles are congruent that means they have the same measure. so if angle 1 is 128 then and 4 is 128.
7. the definition of a square : all interior angles each measure 90 degrees.
8. nonconsecutive means they aren't next to each other so in figure D angles d and b and angles a and c for figure E angle j and m and angle n and l
9. figure e is concave that means its got an angle that "caves in"
Between 10 and 11, all the others would be to much or to little
Answer:
60%
Step-by-step explanation:
To write 9/15 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol % .
