Answer:
a.
b.

Step-by-step explanation:
a. We know that angles in a triangle add up to 180°.
-The right angle triangle in the right triangle has a measure of 90°.
We can therefore equate our angles to 180° and solve for x;

Hence, the angle measure is x=10°
b. Having calculated the value of x from a above as x=10°, we can substitute to find the measures of the two acute angles:

Since, the m∠K is a right angle, it measures 90°
 
        
             
        
        
        
Answer:
25. Its cubed.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
E = 58
F = 32
G = 90
Step-by-step explanation:
3x + 31 + 5x -13 + 90 = 180
3x + 31 + 5x -13 = 90
8x = 90 - 31 + 13
8x = 72
x = 72 / 8
x = 9
E = 3(9) + 31 = 27+31 = 58
F = 5(9)-13 = 45 - 13 = 32
G = 90
 
        
             
        
        
        
Step 1) turn 1.9 into an improper fraction.
= 19/10
step 2) find a least common denominator between 10 and 12. 
= 60
(10x6 and 12x5)
step 3) convert the fractions so they have the same denominator. 
= 19x6 is 114. 
10x6= 60. 
= 11x5 is 55.
12x5 is 60. 
now you have your new fractions. 
step 4) subtract. 
= 114/60 - 55/60 is 59/60. 
step 5) simplify. 
the answer is either 0.9833... (3 repeating) or just 59/60 (you can't simplify the fraction any further).