Answer:
b
Step-by-step explanation:
-44÷2=-22
34+3.5*-22= -43
2 is the unknown number.
Let x be the unknown number.
2x + 19 = 23
2x = 23 - 19
2x = 4
2x/2 = 4/2
x = 2
to check:
2(2) + 19 = 23
4 + 19 = 23
23 = 23
The very last one is the answer!!
Answer:
D) 1.0*10^7
Step-by-step explanation:
10,000,000
10,000*10^3
10*10^6
1.0^10^7
Scientific notation requires the following formula:
(a and c are digits, b is the value after the decimal point)
a.b*10^c