Answer:
mA=56 degrees
Step-by-step explanation:
Complementary angles adds up to 90 degrees. This imply that

From this equation, we can find x:

Now, we can substitute the value for x into the angle mA:

Answer:
b
Step-by-step explanation:
Answer/Step-by-step explanation:
1.a)(iv). 
Positive multiplied by negative = negative


2a.) 73.48 +(-37.3)

73.48 - 37.3 = 36.18
3c.)
÷
Convert to proper fraction
÷
Change ÷ to × and flip the fraction on your right upside down

3d.) -52.25 ÷ (-5.5) = 
(Note: - ÷ - = + )

Answer:A and E
Step-by-step explanation:Have an amazing weekend!
Answer:
Perimeter = 9700 cm
Step-by-step explanation:
Dimensions of sides are;
12, 2x, 12, 5, 5, circumference of semi circle
Now, the semi circle has a radius of 7. Thus, the diameter = 7 × 2 = 14
We see that x is the diameter. Thus, x = 14
Thus; base of trapezium that is 2x = 2 × 14 = 28
Also, circumference of semi circle = 2πr = 2π × 7 = 44
Thus;
Perimeter of shape = 12 + 2(14) + 12 + 5 + 5 + 44
Perimeter = 97 m
Converting to cm, we multiply by 100 to get;
Perimeter = 97 × 100 cm
Perimeter = 9700 cm