Answer:
1) 39
2) 59
3) 53
4) 38
5) 9
6) 12
7) 15
8) 11
Step-by-step explanation:
if the angles together is a right angle than you just subtract the angle that is known from 90 and you get your other angle.
1) 90 - 51 = b = 39
2) 90 - 31 = b = 59
3) 90 - 37 = b = 53
4) 90 - 52 = b = 38
5) 90 - 56 = 34
34 = 3x + 7
3x + 7 - 7 = 3x
34 - 7 = 27
3x = 27
3x / 3 = x
27 / 3 = 9
6) 90 - 48 = 42
42 = 3x + 6
3x + 6 - 6 = 3x
42 - 6 = 36
3x = 36
3x / 3 = x
36 / 3 = 12
7) 90 - 47 = 43
43 = 2x + 13
2x + 13 - 13 = 2x
43 - 13 = 30
2x = 30
2x / 2 = x
30 / 2 = 15
8) 3x + 5x + 2 = 90
8x + 2 = 90
8x + 2 - 2 = 8x
90 - 2 = 88
8x = 88
8x / 8 = x
88 / 8 = 11
1.) Exclude the restricted values of n
2.) Move constant to the right side and change its sign
3.) Subtract the numbers
4.) Simplify the equation using cross-multiplication
5.) To get the variable on the left side, switch the sides of the equation
6.) Divide both sides of the equation by 60
7.) Reduce the fraction with 5
8.) If any solution equals to the restricted value, exclude it
Your answer will be n=1over
12
X + y = 54
x - y = 12
x = 33
y = 21
33 + 21 = 54
33 - 21 = 12
Hope this helps!
Answer:20- 2 x (5 +2)
Step-by-step explanation:
20 - 2 x (5 + 2)
20 - 2 x (7)
20 - 14
6
