Compare rates of change. A. The equation below can be used to find the length of a foot or forearm when you know one or the other. (length of the foot) = 0.860 • (length of the forearm) + 3.302 If you let y = length of the foot and x = length of the forearm, this equation can be simplified to y = 0.860x + 3.302. Using this equation, how long would the foot of a person be if his forearm was 17 inches long? B. What is the rate of change of the equation from Part A? Compare the equation from Part A to your data. Are they the same? Which has a greater rate of change? Why do you think the values are different? C. Is the relation in your data a function? Why or why not? Could the equation in Part A represent a function? Why or why not? Explain your answer.

QUESTION POSTED AT 18/01/2020 - 06:07 AM

Answered by admin AT 18/01/2020 - 06:07 AM

Y=foot
x=foram

A. easy, plug 17 for x and evaluage for y
y=0.860(17)+3.302
y=14.62+3.302
y=17.922 inches


B. rate of change is slope
y=mx+b
m=slope
so
rate or change is 0.860 inches per legnth of forarm

C. what data

D. it is a function
since it is 1st degree (no exponents greater than 1 on the placeholder), and it is not a vertical line
it is a function
Post your answer

Related questions

There are 25 nickels and dimes worth $2.15. You are asked to find how many of each there are. Which is a reasonable answer? A) 7 nickels and 18 dimes Eliminate B) 9 nickels and 18 dimes C) 11 nickels and 16 dimes D) 13 nickels and 15 dimes

The answer is Choice A 7 nickels and 18 dimes why? because the question tells you that There are 25 nickels and dimes worth $2.15. So 18 dimes that is worth $1.80 and 7 nickels that is worth $0.35 so you add $1.80 + $0.35 that = $2.15. So the answer again is Choice A 7 nickels and 18 dimes.

ANSWERED AT 21/02/2020 - 11:28 AM


QUESTION POSTED AT 21/02/2020 - 11:28 AM

Julian fully simplifies this polynomial and then writes it in standard form. 4x2y2 – 2y4 – 8xy3 + 9x3y + 6y4 – 2xy3 – 3x4 + x2y2 If Julian wrote the last term as –3x4, which must be the first term of his polynomial in standard form? 4y4 6y4 –2xy3 –10xy3

Trevor:  Be a sport and express exponentiation properly.  You must use the symbol       " ^ " for this purpose:

4x^2y^2 – 2y^4 – 8xy^3 + 9x3y + 6y^4 – 2xy^3 – 3x^4 + x2y^2

If Julian's last term is -3x^4, then the first term must be 6y^4.  Think about this and see whether you can detect a pattern.  The first term MUST contain "y" only and the last term MUST contain x only.

ANSWERED AT 21/02/2020 - 11:20 AM


QUESTION POSTED AT 21/02/2020 - 11:20 AM

A state requires that all boat licenses consist of the letter A or M followed by any five digits. What is the number of combinations of letters and numbers available for boat licenses? I WILL MARK BRAINLIEST TO THE BEST ANSWER.

2 choices for first letter (A or M) 
10 choices for first digit (0 to 9) 10 choices for second digit (0 to 9) 10 choices for third digit (0 to 9) 10 choices for fourth digit (0 to 9) 10 choices for fifth digit (0 to 9) 2 x 10 x 10 x 10 x 10 x 10  = 200,000 combinations

ANSWERED AT 21/02/2020 - 11:20 AM


QUESTION POSTED AT 21/02/2020 - 11:20 AM

Can someone please help me with this question! btw thx in advance. Use the remainder Theorem to find the remainder: (x^3-1)/(x-4)

F(x)/(x-a)=f(a)
Here a=4
So we need f(4)
F(4)=(4)^3 -1
F(4)=64-1=63

ANSWERED AT 21/02/2020 - 11:18 AM


QUESTION POSTED AT 21/02/2020 - 11:18 AM

What is the length of x


Immediate math help from PAID TUTORS. (paid link)Click here to see ALL problems on Triangles
  Question 118094: Find the length x in the triangle. Side 1=8. Side 2=x. Side 3=12 (Scroll Down for Answer!)Did you know that Algebra.Com has hundreds of free volunteer tutors who help people with math homework? Anyone can ask a math question, and most questions get answers!Check it Out!OR get immediate PAID help on:
Type Your Question Go!!! Answer by jim_thompson5910(34119) About Me  (Show Source):You can put this solution on YOUR website!I'm assuming that the triangle is a right triangle and that side 3 is the hypotenuse. 

We basically have this triangle set up: 
 Since we can see that the triangle has legs of 8 and x with a hypotenuse of 12, we can use Pythagoreans theorem to find the unknown side. 

Pythagoreans theorem: 
a%5E2%2Bb%5E2=c%5E2 where a and b are the legs of the triangle and c is the hypotenuse 


8%5E2%2Bx%5E2=12%5E2 Plug in a=8, b=x, and c=12. Now lets solve for x 

6+4+%2B++x++%5E+2+=+1+4+4 Square each individual term 
 


+x++%5E+2+=+1+4+4+-+6+4 Subtract 64 from both sides 

+x++%5E+2+=+8+0 Combine like terms 

s+q+r+t+%28++x++%5E+2+%29+=+s+q+r+t+%28+8+0+%29 Take the square root of both sides 

x=4%2Asqrt%285%29 Simplify the square root 

Which approximates to... x+=+8+.+9+4+4+2+7+1+9+0+9+9+9+9+1+6 
So our answer is x+=+8+.+9+4+4+2+7+1+9+0+9+9+9+9+1+6....

ANSWERED AT 21/02/2020 - 10:59 AM


QUESTION POSTED AT 21/02/2020 - 10:59 AM

How do i find the answer to find three numbers between -0.62 and -0.61?

To find three numbers between -0.62 and -0.61 you will add a number in the hundredth place.

ANSWERED AT 21/02/2020 - 10:53 AM


QUESTION POSTED AT 21/02/2020 - 10:53 AM

A circle has an area of 50 square meters. Which answer is closest to the measure of its diameter?

8 meters is the answer

ANSWERED AT 21/02/2020 - 10:42 AM


QUESTION POSTED AT 21/02/2020 - 10:42 AM

The population of a certain geographic region is approximately 103 million and grows continuously at a relative growth rate of 1.67%. What will the population be in 5 years? Compute the answer to three significant digits.

The population ( now ) : 103 million.
In 5 years:
103  * ( 1.0167 )^5 =
= 103 * 1.08633586 = 
= 111.89259 ≈ 111.893
Answer:
The population will be 111.893 million.

ANSWERED AT 21/02/2020 - 10:10 AM


QUESTION POSTED AT 21/02/2020 - 10:10 AM

The length of JK¯¯¯¯¯ is 12 units. What is the length of the image of the line segment after a dilation with a scale factor of 2/5? Please help fast

Answer: 4.8 units


Step-by-step explanation:

Given: The length of \overline{JK} is 12 units.

we know that to find the length of the image of the line segment after a dilation with a scale factor of k, we  multiply the length of line by k. we get

The length of the image of the line segment after a dilation with a scale factor of 2/5=\frac{2}{5}\times12=\frac{24}{5}=4.8 units

Hence, The length of the image of the line segment after a dilation with a scale factor of 2/5=4.8 units

ANSWERED AT 21/02/2020 - 09:43 AM


QUESTION POSTED AT 21/02/2020 - 09:43 AM

1.) what do values a h and k tell about the graph 2.) graph function 3.) state domain/range 4.) are there any intercepts? List all

Attached is a very useful chart for translations. [https://us-static.z-dn.net/files/df7/85ffaebe52d207009f6ed5967a5e05b4.jpg]

A number added or subtracted outside of parentheses shifts the graph vertically up (if number is added) or down (if number is subtracted).
As you can see in the chart,
f(x) + k shifts the graph up k units, and
f(x) - k shifts the graph down k units.

A number that is multiplied to x outside parentheses stretches or shrinks the graph vertically. If that number is greater than 1, then it stretches the graph. If the number is a fraction or between 0 and 1, then it shrinks the graph vertically.

As you can see in the chart,
a * f(x), where a>1 stretches the graph f(x) vertically by a factor a.
a * f(x), where a is between 0 and 1 shrinks the graph f(x) vertically by a factor of a.

When h is added or subtracated from x inside the parentheses, the graph is shifted horizontally right or left. Remember that this is opposite of what the sign is:
If h is positive, f(x + h), then the graph shifts left h units.
If h is negative, f(x - h), the graph shifts right h units.
Note that the attached chart uses c instead of h.

Since the function will be quadratic (degree is 2), the domain will be all real numbers, from -infinity to +infinity (-∞, +∞).
Depending on whether the value of a is positive or negative, the graph will open up like a U (if a is positive) or open down like an upside down U (if a is negative).

Since the equation is in vertex form f(x) = a(x - h)^2 = k, the vertex is (h, k). The range (set of y-values) will be from y-coordinate of the vertex (k) to positive or negative infinity depending on whether the graph opens up or down. 

ANSWERED AT 21/02/2020 - 09:41 AM


QUESTION POSTED AT 21/02/2020 - 09:41 AM

How many solutions can be found for the equation 5x + 3(x − 1) = 10x − 2x − 3? None One Two Infinitely many

Answer:

Option (d) is correct.

The equation 5x + 3(x − 1) = 10x − 2x − 3 will have infinite many solution.

Step-by-step explanation:

  Given : the equation 5x + 3(x − 1) = 10x − 2x − 3

We have to find the number of solution to the equation 5x + 3(x − 1) = 10x − 2x − 3

Consider the given equation 5x + 3(x − 1) = 10x − 2x − 3

This can be written as two equations as

y=5x + 3(x-1)   .........(1)

and y = 10x − 2x − 3 ......(2)

Simplify, both the equations,

y=5x + 3x - 3 = 8x - 3  

and y = 10x − 2x − 3 = 8x -3

Since, both equations are same.

So, the graph of both equation will overlap each other.

Hence,  the equation 5x + 3(x − 1) = 10x − 2x − 3 will have infinite many solution.

ANSWERED AT 21/02/2020 - 09:26 AM


QUESTION POSTED AT 21/02/2020 - 09:26 AM

Which ratio is about 2.54 centimeters. about how many centimeters is 4.5 inches?

1 inch equals 2.54 centimeters. Can you work out from here ?

ANSWERED AT 20/02/2020 - 11:22 PM


QUESTION POSTED AT 20/02/2020 - 11:22 PM

Explain why the graphing calculator cannot be used to solve or approximate solutions to all polynomial equations.

Did your explanation include the following?

Some polynomial equations have complex solutions.

Therefore, complex solutions cannot be found by graphing the related system or function in the Cartesian (x-y) plane.

Polynomial functions with all complex solutions do not have x-intercepts, and the related system of equations will not intersect.

ANSWERED AT 20/02/2020 - 11:21 PM


QUESTION POSTED AT 20/02/2020 - 11:21 PM

Tony misplaced 7 77 stamps from his collection. He knows that each stamp of his is worth $ 0 . 1 5 $0.15dollar sign, 0, point, 15 and that the total value of them is now only $ 5 . 5 5 $5.55dollar sign, 5, point, 55.

I take it that only 7 stamps are misplaced and that we are asked for the total value of the stamps including those which have been misplaced. 
If each is worth $0.15 then, the total worth of 7 stamps is $1.05. Then, we add this value to the value of his remaining stamps, $5.55, the answer would be $6.60. 

ANSWERED AT 20/02/2020 - 11:20 PM


QUESTION POSTED AT 20/02/2020 - 11:20 PM

What are the x-intercepts of the quadratic function? y = x² + x – 2 1 2 and 1 2 and –1 –2 and 1

Your answer should be the last one, -2 and 1. Hope this helps!

ANSWERED AT 20/02/2020 - 11:20 PM


QUESTION POSTED AT 20/02/2020 - 11:20 PM

In 4 years, harry’s age will be the same as jim’s age is now. in 2 years, jim will be twice as old as harry will be. find their ages now.

The answer to this question would be:
Jim     =6 years
Harry =2 years

To answer this question, you need to translate the description into a  mathematical equation. If H= Harry's ages and J= Jim's ages, then the equation should be look like this:

1. H+4= J
2. (J+2)= 2(H+2)
     J+2= 2H+4
     J= 2H +2

If you put the 1st and 2nd equation together, the result would be:
H+4= J
H+4= (2H +2)
H-2H= 2-4
-H= -2
H=2

After that insert the H value to either 1st or 2nd equation.
H+4= J
2+4=J
J= 6

ANSWERED AT 20/02/2020 - 11:19 PM


QUESTION POSTED AT 20/02/2020 - 11:19 PM

If y = kx, what is the value of k if y = 20 and x = 0.4?

Set up an equation 20=k(0.4)....to find k divide 20 by 0.4

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

If y = 3x -5 find the value of y when x = -1

Plug in negative 1 for x and do order of operations and u should get negative 8

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

If x-y=8,find the value of y when x=3

3-y=8
-y=8-3
y=-5
so just try to re arrange the equation  to find the value for the variable

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

How do i find 2/4of36?

Two forths is the same as one half ...so just take half of 36 which is 18

ANSWERED AT 20/02/2020 - 11:15 PM


QUESTION POSTED AT 20/02/2020 - 11:15 PM

Half day hike in 4 hours you hike 10 miles what is the unit rate?

2.5 miles/hour

Because 10 divided by 4 = 2.5

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Find the value of 2a 5b when a=-6 and b=2

2a = -12

5b = 10

Hope this helps
:)

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Find the nth term of this sequence -2 3 8 13 18

The nth term is 5n-7

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Decide whether the following rates are equivalent. 12 pages in 20 minutes or 20 pages in 32 minutes

The two fractions that we can extract from the given rates above are:
                (1) 12 pages / 20 minutes
                (2) 20 pages / 32 minutes
We can reduce the fractions or rates to their lowest term by dividing the numbers by 4 such that,
                 (1) 3 pages / 5 minutes
                 (2) 5 pages / 8 minutes
Therefore, the rates are not equivalent. 

ANSWERED AT 20/02/2020 - 11:12 PM


QUESTION POSTED AT 20/02/2020 - 11:12 PM

Charles has 24 marble. he has 6 more yellow marbles than blue marbles. what is the equation

Answer:

Required Equations are x + y = 24 & x - y = 6

Step-by-step explanation:

let x be the no of yellow marbles that Charles has.

and y be the no of blue marbles that Charles has.

Total Marbles that Charles has = 24

⇒ x + y = 24 ..............(1)

Charles has 6 more yellow marbles than blue marbles.

⇒ x = y + 6

    x - y = 6 ......................(2)

Therefore, Required Equations are x + y = 24 & x - y = 6

ANSWERED AT 20/02/2020 - 11:12 PM


QUESTION POSTED AT 20/02/2020 - 11:12 PM