Which sums are equal to -9+21? Choose
2 answers:
Answer:
A and C
Step-by-step explanation:
-9 + 21 = 12
Option A:
21 + (-9)
21 - 9
12 TRUE
Option B:
9 + (-21)
9 - 21
-12 FALSE
Option C:
(-9) + 9 + 12
0 + 12
12 TRUE
Option D:
-(9 + 21)
-(30)
-30 FALSE
Option E:
(-9) + (-21)
-9 - 21
-30 FALSE
Best of Luck!
Answer:
A, C
Step-by-step explanation:
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-250 feet, because you are 250 feet below sea level.
Answer:
Step-by-step explanation:
=> 5x-4+2(x-4) = 16
Expanding the brackets
=> 5x-4+2x-8 = 16
Combining like terms
=> 5x+2x-4-8 = 16
=> 7x - 12 = 16
Adding 12 to both sides
=> 7x = 16+12
=> 7x = 28
Dividing both sides by 7
=> x = 4
Answer:
it wont let me see
Step-by-step explanation:
Answer:
it is 1/4
Step-by-step explanation:
Answer:55
Step-by-step explanation:
55x1=55
