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
kap26 [50]
3 years ago
8

Assume you have collected data pairs (x, y) on a certain variety of tree. x is the number of weeks since the tree was planted an

d y is the height of the tree in inches. A plot of the data points with the best-fit line is given below. What age is predicted by the best-fit line for a height of 50 inches? 

Mathematics
2 answers:
Dvinal [7]3 years ago
8 0
I'm not sure what the answers are, but I can help. If you go to the x axis and search for 50, then go straight up to the line of best fit, you'll find the estimated height of the tree. It appears to be about 70. 

Hope this helps! 
jok3333 [9.3K]3 years ago
3 0
<h2>Answer:</h2>

The age as is predicted by the best-fit line for a height of 50 inches is:

                                    29 years.

<h2>Step-by-step explanation:</h2>

We see that our given line of best fit passes through the point (0,22) and (60,80)

Hence, we will find the equation of the line of best by using the formula:

If a line passes through two point (a,b) and (c,d) then the equation of line is calculated by:

y-b=\dfrac{d-b}{b-a}\times (x-a)

Here we have: (a,b)=(0,22) and (c,d)=(60,80)

Hence, the equation of line is:

y-22=\dfrac{80-22}{60-0}\times (x-0)\\\\\\y-22=\dfrac{58}{60}\times x\\\\\\y=0.966667 x+22

Now we are asked to find the value of x when y=50

Hence, on putting y=50 we have:

x=28.9325

which is approximately equal to 29

Hence, the age as is predicted by the line of best fit is:

                             29 years.

You might be interested in
NEED HELP!!!
AnnyKZ [126]

Answer:

see explanation

Step-by-step explanation:

(1)

\frac{6}{2} = \frac{4}{p} ( cross- multiply )

6p = 8 ( divide both sides by 6 )

p = \frac{8}{6} = \frac{4}{3}

(2)

\frac{n}{4} = \frac{8}{7} ( cross- multiply )

7n = 32 ( divide both sides by 7 )

n = \frac{32}{7}

(3)

\frac{5}{3} = \frac{x}{4} ( cross- multiply )

3x = 20 ( divide both sides by 3 )

x = \frac{20}{3}

6 0
3 years ago
Which impression is equivalent to - 3/4 / -(<br> 8 / 12)​
Makovka662 [10]
I’m not sure if you can
3 0
3 years ago
Find the measure of angle A
Gre4nikov [31]

Answer:

21 degrees

Step-by-step explanation:

Triangles have a total angle of 180 degrees.

This makes our equation:

3x+3+4x+135=180

Subtract 135 from both sides and combine like terms

7x + 3 = 45

Subtract 3 from both sides

7x = 42

Divide both sides by 7

x = 6

Plugging the number in:

3x + 3 =

3(6) + 3 =

21

7 0
3 years ago
HELP ME NOW PLEASE NOW ADGAFDKD;LHJ!!!!!!<br><br><br> PLEASE AND THANK YOU :)))))
Eddi Din [679]

I got D.

There's a few ways to solve it; I prefer using tables, but there are functions on a TI-84 that'll do it for you too. The logic here is, you have a standard normal distribution which means right away, the mean is 0 and the standard deviation is 1. This means you can use a Z table that helps you calculate the area beneath a normal curve for a range of values. Here, your two Z scores are -1.21 and .84. You might notice that this table doesn't account for negative values, but the cool thing about a normal distribution is that we can assume symmetry, so you can just look for 1.21 and call it good. The actual calculation here is:

1 - Z-score of 1.21 - Z-score .84 ... use the table or calculator

1 - .1131 - .2005 = .6864

Because this table calculates areas to the RIGHT of the mean, you have to play around with it a little to get the bit in the middle that your graph asks for. You subtract from 1 to make sure you're getting the area in the middle and not the area of the tails in this problem.

7 0
3 years ago
Number 7 and 8 plz answer quickly
Flauer [41]

(7) m∠A = 52°

(8) m∠B = 117°

Solution:

(7) Let us first define the supplementary and complementary angles.

Supplementary angles: Two angles are said to be supplementary angles if their sum is add up to 180°

Complementary angles: Two angles are said to be complementary angles if their sum is add up to 90°

Given supplement of 142° = 180° – 142°

                                           = 38°

Complement of ∠A = Supplement of 142°

⇒ Complement of ∠A = 38°

Measure of ∠A = 90° – 38°

                          = 52°

Hence m∠A = 52°.

(8) Given complement of 27° = 90° – 27°

                                                 = 63°

Supplement of ∠B = Complement of 27°

⇒ Supplement of ∠B = 63°

Measure of ∠B = 180° – 63°

                          = 117°

Hence m∠B = 117°.

3 0
3 years ago
Other questions:
  • Which situation shows a constant rate of change? A. The number of play tickets sold compared with the number of minutes before t
    5·1 answer
  • Can anyone help with this questions
    14·1 answer
  • Simplify 11/66 12/24 what is the answer
    7·2 answers
  • Please help me with questions a, b, and c. Thank you
    13·1 answer
  • A solid oblique pyramid has a regular hexagonal base with an area of 54 cm2 and an edge length of 6 cm. Angle BAC measures 60°.W
    15·2 answers
  • If a shirt selling for $18 is marked upto $20 then the % increase is
    5·2 answers
  • Apply distributive property: 5(2 + x) *<br> 10 points<br> 10 + x<br> 10 + 5x
    7·2 answers
  • Please Help! Need this to pass :/
    11·1 answer
  • A particle moves along the x-axis so that at any time t&gt;0, its acceleration is given by a(t) = ln(3^t + 1). If the velocity o
    5·2 answers
  • PLEASE ANSWER!!!!! ASAP
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!