9514 1404 393
Answer:
(a) k = –2.5
Step-by-step explanation:
When the function f(x) is transformed to f(x -h) +k, the graph is translated h units right and k units up.
If the absolute value function has its original vertex of (0, 0) moved to (1, -2.5), then (h, k) = (1, -2.5).
The value of k is -2.5.
_____
Additional comment
The above answer applies to the given problem statement. The question asked in the comment has a vertex of (0, 2.5), so (h, k) = (0, 2.5) for that question.
If you're going to copy the answer, make sure it is the answer to the question you're looking at.
In an absolute value function expressed as f(x) = |x – h| + k, the value of k corresponds to the y-coordinate of the function's vertex. In this case, as the vertex is at the point (1, -2.5), the value of k is -2.5.
The student's question relates to the concepts of Two-Dimensional (x-y). Graphing and the graphing of the absolute value function. It is vital to remember that the vertex of an absolute value graph in the form f(x) = |x – h| + k corresponds to the point (h, k) on the Cartesian coordinate plane. The student states that the vertex is at the point (1, -2.5), so based on our function analysis, the value of k, which represents the y-coordinate of the vertex, is -2.5. Therefore, the correct answer is k = -2.5.
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B. 15 divided by 3= 5
C. 50 divided by 5= 10
D. 20 divided by 10= 2
Answer:
A. 10 divided by 2=5 i think
Step-by-step explanation:
it look like it is
2.5y +6 =4.5y -1
Answer:
Step-by-step explanation:
4.5y - 1 = 2.5y + 6
2y - 1 = 6
2y = 7
y = 7/2 or 3.5
Answer:
72
Step-by-step explanation:
(a+b)h / 2
(9+15)6 / 2
24 x 6 / 2
72
I hope im right!!
Answer:
79.24% probability that the average weight of rock and soil brought back by these rovers will be between 48 pounds and 52 pounds
We use the sampling distribution of the sample means of size 10 to solve this question, by the Central Limit Theorem. They are normally distributed with mean 50 and standard deviation 1.58.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal probability distribution
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation .
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem, we have that:
What is the probability that the average weight of rock and soil brought back by these rovers will be between 48 pounds and 52 pounds?
This is the pvalue of Z when X = 52 subtracted by the pvalue of Z when X = 48. So
X = 52
By the Central Limit Theorem
has a pvalue of 0.8962
X = 48
has a pvalue of 0.1038
0.8962 - 0.1038 = 0.7924
79.24% probability that the average weight of rock and soil brought back by these rovers will be between 48 pounds and 52 pounds
What sampling distribution should we use to compute this probability?
We use the sampling distribution of the sample means of size 10 to solve this question, by the Central Limit Theorem. They are normally distributed with mean 50 and standard deviation 1.58.
The number of seconds it takes light to travel from Sirius to Earth is .
Given that, the speed of light is about 1.86×10^5 miles per second. The star Sirius is about 5.062×10^13 miles from Earth.
We need to find out how many seconds it takes light to travel from Sirius to Earth.
To determine the power or exponent of 10, let us understand how many places we need to move the decimal point after the single-digit number.
Let the number of seconds it takes light to travel from Sirius to Earth be n seconds
Now, the proportion=
⇒
⇒
Therefore, the number of seconds it takes light to travel from Sirius to Earth is .
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Answer:
2.72 × 10^8 seconds
Step-by-step explanation:
1. Organize the given information to help you create the equation:
- Light travels 1.86 × 10^5 miles per 1 second
- Light travels 5.062 × 10^13 miles per n seconds
- Need to solve for n
2. Set up the equation (Make sure that both numerators and both denominators match units, so the seconds are either both on top or both on bottom, NOT switched):
=
3. Cross multiply (Multiply the first fraction's numerator by the second's denominator, and vice versa. It doesn't matter what number is on which side of the = sign)
n × (1.86 × 10^5) = 5.062 × 10^13
4. Solve for n by isolating the variable and dividing.
=
n =
n = 2.72 × 10^8 (Make sure to include the unit, seconds)