Answer:
a) 137.9°
b) 12.2° (please refer to explanation because I didn't know what to round to)
Step-by-step explanation:
1a) A supplementary angle will equal 180°, so you must subtract 42.1 from 180
180-42.1 = 137.9
1b) A complementary angle will equal 90°, so you need to use the expression given and add an x for the other part of 90°
8x-20+x = 90
9x-20=90
9x=110
x=12.2
Answer:
your chances would be 9 out 10 or in fraction form 9/10
Answer:
w = -5
Step-by-step explanation:
Hello there!
9+7w-9=5w-10
Add 9 and -9 since we can add those
7w=5w-10
Use subtraction Prop of Equality (combining/simplifying like terms)
2w = -10
Now isolate the w by dividing 2w by 2 and use the division prop of equality
w = -5
Hope this helps. Feel free to comment for further explanation.
Answer:
12 bolt 18 nuts
Step-by-step explanation: (Elimination method)
N=nuts
B=bolts
B + N = 30
0.20B + 0.10N = 4.20
20B+10N=420 (I multiplied by 10 to eliminate decimals
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I will multiply the first by (-10)
-10B -10N =-300
20N +10N=420
10B+0 = 120
B=12 (12 BOLT)
30-12 =18 (8 NUTS)
12*0.20=2.40
18*0.10=1.80
2.40+ 1.80 = 4.20
Show the input working pace
