F(-1)= 4*7(-1) = 4*-7 = -28
F(2)= 4*7(2) = 4*14 = 56
Answer:
Option C, D, E
Step-by-step explanation:
To find : Which pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number?
Solution :
We divide large number by smaller number to get the required answer,
A) 
B) 
C)

D) 
E) 
Option C, D and E pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number.
Answer:
y = - 49
Step-by-step explanation:
Given
7x - 2y = 35 ← substitute x = - 9 into the equation
7(- 9) - 2y = 35, that is
- 63 - 2y = 35 ( add 63 to both sides )
- 2y = 98 ( divide both sides by - 2 )
y = - 49
Answer:
4) 1
5) 13/0, ND
6) -4
7) 5/3
8) 0
9) -1/7
all ans r correct....
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