She would have saved 30 dollars.
Joe ate 1/2 because when you multiply them, you get 2/4. when you simplify it, you get 1/2
Answer:
6: d, 7: b and c, 8: a
Step-by-step explanation:
6) The answer is (d).
We have,
0.00001131 =1.131×0.00001
= 1.131/100000
= 1.131×10^-5.
So, this is correct answer.
7) This question have two answers (b) and (c), both are correct.
(b) 480000-97000
= 4.8x100000-9.7x10000
=4.8x10^5-9.7x10^4
(c) 4.8x10^5-9.7x10^4
= 4.8x10^5-0.97x10^5
= (4.8-0.97) x10^5
=3.83x10^5
8)(a)
(4 x 10^3)(5x10^7).
= 4x5x10³x10^7
= 4x5x10^(3+7).
Answer:
C
Step-by-step explanation:
8 divided by 9 = 0.8888...
Answer:
0.999
Step-by-step explanation:
Assuming that there are ten questions.
This yields:
Each answer has an equal chance of being selected.
Therefore, the probability of the answer = 
But we assume 10 questions, therefore, the probability will be given as follows:
P (Ans) = 
= 
= 0.000977
This is the probability of getting them all wrong.
The probability of getting the answer right is given by p(Right answer) = 1 -0.000977 = 0.9990