1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VARVARA [1.3K]
3 years ago
8

Bryce wrote the linear regression equation y=1.123x-6.443 to predict the armspan, y, of a person who is x inches tall. Riley has

an armspan of 67.5 inches. Which is the best prediction of Riley’s height?
A ) 54.36 inches
B ) 65.84 inches
C ) 66.55 inches
D ) 69.36 inches
Mathematics
2 answers:
Harrizon [31]3 years ago
5 0
For this case what you should do is use the linear equation that Bryce wrote and replace the corresponding value of y which is 67.5 inches. Then, you must clear x to find the height.
 We have
 y = 1.123x-6.443
 67.5 = 1.123x-6.443
 Clearing x
 x = (67.5 + 6.443) / (1.123) = 65.84
 The best prediction of Riley's height is 65.84 inches.
 answer
 B) 65.84 inches
Nady [450]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Took test

You might be interested in
Solve the system by substitution<br> -4.5x-2y=-12.5<br> 3.25x-y=-0.75
gogolik [260]

Answer:

The answer to your question is: x = 1, y = 4

Step-by-step explanation:

I'll change decimals to fractions

4.5 = 9/2

12.5 = 25/2

3.25 = 13/4

0.75 = 3/4

                             -9/2 x - 2 y = - 25/2         (I)

                             13/4 x  -   y  = - 3/4            (ll)

Process

               from (II)     y = 13/4x  + 3/4

Sunstitution             -9/2x -2(13/4 x + 3/4) = - 25/2

                               -9/2 x - 13/2 x - 3/2 = -25/2

Multiply by 2         -9 x - 13 x - 3 = -25

                             -22 x = -25  + 3

                            -22 x = -22

                             x = 22/22

                            x = 1

                             y = 13/4 (1) + 3/4

                             y = 16/4

                             y = 4                                          

7 0
3 years ago
Heeelp and simplify <br> ASAP PLEASE
Svetach [21]

Answer:

hi

Step-by-step explanation:

7 0
3 years ago
HURRY HELP! ILL MARK BRAINLEST ANSWER!!! if I have an 82 in a class, and I get 100 on two projects worth 15% of my grade, what w
dsp73

Answer:

Your final grade would be 87.4

Step-by-step explanation:

When an assessment is worth a certain percentage of a final grade, the grade percentage of the assessment is taken from its allocated percentage of the final grade. For example:

One project is worth 15% of the final grade, and you got 100% on it. This means that the percentage it contributes to the final grade is 100% (achieved) of 15% (allocated %). 100% of 15% is 15% (15x1). This means that if you hypothetically only completed the project 100% without other assessments, your final grade would be 15%.

This is the same for the other project: 100% (achieved) of 15 (% worth of final grade) = 15.

This is because when you get 100% on the project, you get the full 15% of its worth for the final grade (if that makes sense).

So, from both projects, the final grade would be 30.

Now for the 82.

Since the projects together are worth 30% of the final grade, it means that the 82 in class is worth the remaining 70%.

82% (achieved) of 70 (worth %) = 70x0.82 = 57.4

The 82 in class contributes 57.4 towards the final grade.

Since we have 30 from the projects, and the 57.4 from the class, your final grade would be 30+57.4 = 87.4

Hope this helped!

6 0
4 years ago
Explain how horizontal and vertical translations each affect the coordinates of the points of a figure?
Neporo4naja [7]
Translations of geometric figures in the coordinate plane can be determined by translating the x- and y-coordinates of points. Horizontal and vertical translations are the easiest. ... Solution: A horizontal translation just changes the x-coordinates of all points, so the rule is (x, y) à (x + 3, y).
6 0
3 years ago
I need help for math plz :(
Lemur [1.5K]

Answer:

Option D

Step-by-step explanation:

Set of data in terms of ordered pairs represents a function when output value of each input value is different.

Option A

Since, for every value of x there is a different value of y, it's a function.

Option B

In each ordered pair, for every value of x there is a different value of y.

Therefore, it's a function.

Option C

From the given graph, for every value of x there is a different value of y.

Therefore, it's a function.

Option D

From the given set of ordered pairs we find for x = 1 there are two values of y (y = 4 and 3).

Therefore, the given set of ordered pairs doesn't represent a function.

Option D is the answer.

6 0
3 years ago
Other questions:
  • Solve D=RT for D, if T=5hours and R=65mph
    15·1 answer
  • I need help plzz I need the answer
    6·2 answers
  • I'm stuck, could someone help me?
    6·1 answer
  • Coordinates of a Pre-image
    9·2 answers
  • Find the polynomial M if 2x^2− 1/3 ax+by−M=0.
    11·1 answer
  • | x - 2| = | 4 + x |
    15·1 answer
  • Heart Lake Developments sold four lakefront lots for ​$ per hectare. If the sizes of the lots in hectares were ​, ​, ​, and ​res
    6·1 answer
  • Write an equation in slope intercept form for the line that passes through (5,-1) (6,-1)
    5·1 answer
  • What is the area of the parallelogram below if b=6.1? Round your answer to the nearest tenth.
    15·1 answer
  • Which image shows a plane slicing a double-napped cone to produce a hyperbola?<br><br> Answer is D
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!