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Sav [38]
3 years ago
15

Multiply and simplify: x+4/x-5*x-1/x^2+2x-8

Mathematics
1 answer:
____ [38]3 years ago
7 0
Hope it could help u

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The IQ scores and English test scores of fifth grade students is given by the regression line 9 = -26.7 +0.9346s, where y is the
Phantasy [73]

Answer:

Option E) 2.68; The regression line under predicts the student's English test score.

Step-by-step explanation:

We are given the following information:

The IQ scores and English test scores of fifth grade students is given by the regression line

y = -26.7 +0.9346s

where y is the predicted English score and s is the IQ score.

Here English score is the predicted variable that is the dependent variable and the IQ score is the independent variable and plays the role of predictor.

An actual English test score for a student is 65.7 with an IQ of 96. We have to predict the English score with the help of regression equation.

Predicted or interpreted English score =

y = -26.7 +0.9346(96)= 63.0216

Thus, predicted English score is 63.0216.

Observed value of English score at IQ 96 is 65.7

Residual = Observed value - Predicted value

= 65.7 - 63.0216 = 2.6784 \approx 2.68

Since the predicted value is less than the original or observed value we can say that the regression line under predict the English score.

Option E) 2.68; The regression line under predicts the student's English test score.

7 0
3 years ago
The area of the large rectangle is twice the area of the small rectangle. What is the value of x?Two rectangles are shown. The l
kupik [55]

Answer:

B. 8 cm.

Step-by-step explanation:

The area of a rectangle is the length*width.

The area of the larger rectangle is 4*12=48.

The area of the smaller rectangle is 3*x=3x.

If the larger rectangle's area is twice that of the smaller rectangle, then we can say 48=2*3x.

Let's solve for x

48=2*3x

48=6x

x=8

3 0
2 years ago
HELP PLS.............
makkiz [27]

Answer:

Step-by-step explanation:

6 0
3 years ago
How to know if you got a one solution
uysha [10]

Answer:

You know you got one solution if when you solve your equation its not for example 5=5 because that's infinite solutions or 5=6 because that's no solution so one solution would be like y=5

6 0
3 years ago
Please help!! I will give brainilest. look at the picture!
xxMikexx [17]

Answer:

Rows 126

last row has 41

last row is not full because its an odd number

Step-by-step explanation:

4 0
3 years ago
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