Answer:
There are 18 ways to fill out the answer sheet so that eight answers are correct and one is incorrect.
Step-by-step explanation:
Consider the provided information.
A multiple choice test consists of nine questions, each of which has three choices.
We need to find the number of ways so that eight answers are correct and one is incorrect.
There is only one correct answer and for incorrect answer we have only 2 choices because 1 choice is correct.
Thus the number of possible ways are:
(2×1×1×1×1×1×1×1×1)+(1×2×1×1×1×1×1×1×1)+(1×1×2×1×1×1×1×1×1)+(1×1×1×2×1×1×1×1×1)+(1×1×1×1×2×1×1×1×1)+(1×1×1×1×1×2×1×1×1)+(1×1×1×1×1×1×2×1×1)+(1×1×1×1×1×1×1×2×1)+(1×1×1×1×1×1×1×1×2) = 2+2+2+2+2+2+2+2+2 = 18
There are 18 ways to fill out the answer sheet so that eight answers are correct and one is incorrect.
This question is Incomplete because it lacks the appropriate options
Complete Question
Which number is the best estimate of 866,214,000,000 using powers of 10
a) 9 × 10¹¹
b) 8 × 10¹¹
c) 10 × 11¹⁰
d) 8 × 10-¹¹
Answer:
a) 9 × 10¹¹
Step-by-step explanation:
When we want to estimate a number using the power of 10, we are trying to write the number in a standard form.
We are to estimate :866,214,000,000 using powers of 10
Hence,
8.66214000000 × 10¹¹
We round up to the nearest whole number
= 9 × 10¹¹
Therefore, the best estimate for 866,214,000,000 using powers of 10
= 9 × 10¹¹
Answer:
center (-13,2) radius=9
Step-by-step explanation:
(x+13)^2+(y+2)^2=81
x=-13
y=-2
r=sq rt of 81
Answer: -4.5
Step-by-step explanation:
Hi there!
To start, you must first find the discount amount. To do this, multiply 10% or 0.10 to the cost, $239.
0.10*239=$23.90
Now, subtract this discount amount from your original amount:
239-23.90=215.1
Therefore, your final answer would be B. $215.10
Hope this helps and have a nice day!