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saw5 [17]
3 years ago
13

For this data set, the least squares regression line is Y = 31.72 + 0.62X, where X represents the final exam score as a percent,

and Y represents the predicted course grade as a percent. Using the given equation of the regression line, what is the predicted course grade of a student who earns 85% on the final exam?
Mathematics
1 answer:
emmasim [6.3K]3 years ago
6 0

Answer:

  84.42

Step-by-step explanation:

Put the given value where X is, and do the arithmetic.

  Y = 31.72 + 0.62(85) = 31.72 +52.7 = 84.42

The predicted course grade is 84.42.

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Please help me understand
puteri [66]

9514 1404 393

Answer:

  D.  86°

Step-by-step explanation:

Points D and F divide the circle into two arcs. The long arc is labeled 274°, and the short arc is the one you're asked to find. You know the total of these two arcs is the full circle, 360°.

  274° + DF = 360°

  DF = 360° -274°

  DF = 86°

__

There are other relationships you can use to find arc DF. One of the simpler ones is ...

  DF and the external angle at E are supplementary:

  DF = 180° -94° = 86°

5 0
3 years ago
Which size can of green beans shown in the table has the lowest unit price?
posledela
The can of green beans that has the lowest unit price is the 8 oz. size.

To find the unit price of each size, divide the cost by the size. (A number below that's in parentheses means it goes on forever)

0.89 ÷ 6 = 0.148(3)
1.04 ÷ 8 = 0.13
1.69 ÷ 10 = 0.169
4.79 ÷ 32 = 1496875
Among all of these answers, the can with 8 oz. has the least unit price/rate. Thus, this is the answer. 

3 0
2 years ago
Help!!<br> What is the relationship between the corresponding angle bisectors BD and XZ?
Harrizon [31]

Answer:

XZ = 2.5 BD

Step-by-step explanation:

Comparing the two triangles,

\frac{BD}{BC} = \frac{XZ}{XY}

\frac{6}{8} = \frac{XZ}{20}

⇒ XZ = \frac{20*6}{8}

         = 15

XZ = 15

So that,

BD:XZ = 6:15

           = 1:2.5

Therefore, the relationship between BD and XZ is XZ = 2.5 BD.

8 0
3 years ago
A number patter has 75 as its first term. The rule for the pattern is subtract 6. What is the sixth term?
denpristay [2]
39 because you have to subtract six 6 times so 6*6=36 so 75-36=39
7 0
2 years ago
Read 2 more answers
Which is greater 1.56 or 1.29
ruslelena [56]

Answer:

<u>1.56 is greater than 1.29</u>. (Check after the decimal point, 5 is greater than 2, so 1.56 is greater than 1.29)

8 0
2 years ago
Read 2 more answers
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