Answer: 15 miles
<u>Step-by-step explanation:</u>
2/3 of the way is 30 miles
Let x represent the total distance to grandmother's house, then
Since the total distance is 45 and they have already driven 30 miles, there is 15 miles to go
Which of the following examples is an error of addition by one? A. 7363 + 1535 = 8798 B. 3415 + 2174 = 5589 C. 5167 + 4622 = 978
2 answers:
Answer:
(A) and (B)
Step-by-step explanation:
(A) The given example is:
Adding these two numbers, we get
which is an error of addition by one.
Thus, this option is correct.
(B)The given example is:
Adding these two numbers, we get
which is an error of addition by one.
Thus, this option is correct.
(C)The given example is:
Adding these two numbers, we get
which is not an error of addition by one.
Thus, this option is not correct.
(D) The given example is:
Adding these two numbers, we get
which is not an error of addition by one.
Thus, this option is not correct.
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Answer: x>_3.2 OR x<_ -0.75
Step-by-step explanation: first break down your compound inequality. 5x-4>_12
You first cancel out your constants by adding 4 to both sides. Now you’re left with 5x>_16 then to cancel five you have to divide on both sides by five which equals to 3.2. Then, x>_ 3.2.
Next you do your second part, 12x+5<_-4
So first cancel out the constant of 5 by subtracting 5 on both sides, making the equation 12x<_-9. Now, you divide by 12 on both sides, making it -9/12. Which effectively is -0.75. Therefor, the answer being x<_ -0.75. Add the two together x>_3.2 OR x<_0.75
Answer: |p-72% |≤ 4%
Step-by-step explanation:
Let p be the population proportion.
The absolute inequality about p using an absolute value inequality.:
, where E = margin of error,
= sample proportion
Given: A poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% .
|p-72% |≤ 4%
⇒ 72% - 4% ≤ p ≤ 72% +4%
⇒ 68% ≤ p ≤ 76%.
i.e. p is most likely to be between 68% and 76% (.