Answer is 13+21 , two negatives make a positive as a result the answer is A
1)
a. 4
b. 9
c. -7
d. -23
2)
a. F
b. F
c. T
d. F
3)
a. 100 -66 =34
b. 78 x 3 = 234
c. 36 + 24 = 60
d. 4 x 17 x 3 = 204
21)
a. -9 + (-12)
= - 9 - 12
= - 21
b. -17 + (3)
= -17 + 3
= - 14
c. 24 + ( -11 )
= 24 - 11
= 13
d. - 15 + (-10)
= - 15 - 10
= - 25
e. - 63 + ( -42) + 8
= - 63 - 42 + 8
= - 97
f. 101 + ( -11 ) + ( -100 )
= 101 -11 - 100
= - 10
Combine like terms
2a² + 6a² = 8a²
8a² - 5
Answer:
Step-by-step explanation:
Answer:
12.5 m
Step-by-step explanation:
1st drop 50 m
2nd drop 50/2 = 25 m
3rd drop 25/2 = 12.5 m
