Which equation shows y= 3/4 x− 5/2 in standard form?
1 answer:
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9514 1404 393
Answer:
x = 7 (multiplicity 2)
Step-by-step explanation:
When the function is written in factored form, the zeros are the values of the variable that make the factors zero.
y = (x -7)(x -7)
The values x = 7 and x = 7 will make the factors zero. The zero is said to be x=7 with multiplicity 2.
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On the graph, the zeros are the x-intercepts (where y=0). The graph only touches the x-axis, but does not cross. With some experience, you can recognize that this is a zero with even multiplicity (2).
Answer:
On the SAT her z-score was 1.4
On the ACT her z-score was 1.5
Due to the higher z-score, she performed better on the ACT.
Step-by-step explanation:
The z-score measures how many standard deviations a score X is above or below the mean. it is given by the following formula:
In which is the mean and
is the standard deviation.
In this problem
We find her z-score for both the SAT and the ACT.
SAT
Exam Caitlin's Exam Score Mean Exam Score Standard Deviation
SAT 1850 1500 250
So
ACT
Exam Caitlin's Exam Score Mean Exam Score Standard Deviation
ACT 28 20.8 4.8
So
She wants to know on which test she performed better. Find the z-scores for her result on each exam.
On the SAT her z-score was 1.4
On the ACT her z-score was 1.5
Due to the higher z-score, she performed better on the ACT.