$m1 + m2 = 180 \: (straight \: angle) \\ then \\ x - 12 + 7x = 180 \\ 8x - 12 = 180 \\ 8x = 180 + 12 = 192 \\ x = 192\div 8 \\ x = 24\\ hence \\ m1 = 24 - 12 = 12 \\ m2 = 7 \times 24 = 168.$

6 0

3 years ago

Evaluate 8a - 1 + 0.5b when a= 1/4 and b=10.

nikitadnepr [17]

Answer:

Step-by-step explanation:

Substitute 1/4 with 8a. 8/4=2

Next, Substitute 10 for 0.5. 10/2=5

Finally, find the sum

(2-1)+5

6 0

2 years ago

.......................help pls

Vinvika [58]

Answer:

The first one is incorrect

Step-by-step explanation:

3^2 - 5 + 2

9 - 5 + 2

4+2 = 6 (not 42)

4 0

3 years ago

Read 2 more answers

Solve the following equation 8x+8=56

hoa [83]

Answer:

x=6

Step-by-step explanation:

5 0

3 years ago