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
Vadim26 [7]
3 years ago
15

When you have two shapes to compare on a coordinate plane, you can determine the scale factor, knowing that the transformation w

as a dilation. Generate instructions you would give another student to determine the scale factor.
PLEASE HELP ME!!!
Mathematics
2 answers:
Sveta_85 [38]3 years ago
4 0

Answer:

Locate two corresponding ordered pairs of the two shapes. Calculate how much the pre-image values were multiplied by to obtain the image values. This is your scale factor. You can calculate this by dividing the coordinates of the mage by the corresponding coordinates of the pre-image.


const2013 [10]3 years ago
3 0
Assume that the initial coordinates are (x,y) and that the dilated coordinates are (x',y').

The dilation is therefore:
(x,y) ............> (x',y')

Now, let's assume that the dilation factor is k.
Therefore:
x' = kx
y' = ky

Based on the above, all the student has to do is get the initial coordinates and the final ones and then substitute in any of the above two equations to get the value of k.

Example:
Assume an original point at (2,4) is dilated to coordinates (4,8). Find the dilation factor.
Assume the dilation coefficient is k.
(x,y) are (2,4) and (x',y') are (4,8)
Therefore:
x' = kx .........> 4 = k*2 ..........> k = 2
or:
y' = ky ..........> 8 = k*4 .........> k = 2
Based on the above, the dilation coefficient would be 2.

Hope this helps :)
You might be interested in
Help me pls pls pls ​
Simora [160]

Answer:

A.the product of X and a factor not depending on X.

4 0
3 years ago
Hurry 50 points for correct answer
Ad libitum [116K]

Answer: <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

Step-by-step explanation:

The equation x=\sqrt{6x+7} can be solved by squaring both sides:

x^2 = 6x + 7\\\\x^2 - 6x - 7 = 0\\\\(x-7)(x+1) = 0

We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:

1 = \sqrt{-1}\\ 7 = \sqrt{49}

The square root of 49 equals 7, but the square root of -1 is an imaginary number.

The correct choice is <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

4 0
3 years ago
What are two factors that equal -490 and add up to -21?
Leno4ka [110]
The factors are -70 and 41
-70 x 41 = -490
-70 + 41 = -21
Hope this helps!
3 0
3 years ago
Evaluate the line integral for x^2yds where c is the top hal fo the circle x62 _y^2 = 9
natulia [17]
Parameterize C by

\mathbf r(t)=\langle x(t),y(t)\rangle=\langle3\cos t,3\sin t\rangle

where 0\le t\le\pi. Then the line integral is

\displaystyle\int_Cx^2y\,\mathrm dS=\int_{t=0}^{t=\pi}x(t)^2y(t)\left\|\frac{\mathrm d\mathbf r(t)}{\mathrm dt}\right\|\,\mathrm dt
=\displaystyle\int_{t=0}^{t=\pi}(3\cos t)^2(3\sin t)\sqrt{(-3\sin t)^2+(3\cos t)^2}\,\mathrm dt
=\displaystyle3^4\int_{t=0}^{t=\pi}\cos^2t\sin t\,\mathrm dt

Take u=\cos t, then

=\displaystyle-3^4\int_{u=1}^{u=-1}u^2\,\mathrm du
=\displaystyle3^4\int_{u=-1}^{u=1}u^2\,\mathrm du
=\displaystyle2\times3^4\int_{u=0}^{u=1}u^2\,\mathrm du
=54
6 0
3 years ago
Shalondra was late making her monthly car payment last month and had to pay a late fee. Her car payment was $325.00 and she was
xz_007 [3.2K]
$338.00 is what she had to pay in all
4 0
3 years ago
Read 2 more answers
Other questions:
  • How many four-digit personal identification numbers (PIN) are possible if the PIN cannot begin or end with a 0 and the PIN must
    13·2 answers
  • Please help and i have to be done with my work by tomorrow
    5·1 answer
  • Hannah buys 2 and one half pounds of dried fruit for $1.50. how much is she paying for one pound of dried fruit?
    9·1 answer
  • A local sporting goods manager gave each member of a basketball team a coupon for 20% off the regular price of one pair of baske
    10·1 answer
  • Please Help!!! What is the end behavior of function h? h(x)=2(x-3)^2 As x approaches negative infinity, approaches negative infi
    6·1 answer
  • For which values of x will the rational expression below be equal to zero? <br><br> (X-1)(x+5)/(x-5)
    12·2 answers
  • Tysm3333333333333333333333
    6·1 answer
  • The price of a DVD is $24.00 plus 8% sales tax.What is the sales tax on this DVD in dollars and cents?
    8·2 answers
  • Use the figure to find the specified angle measure. In the figure, II q
    8·1 answer
  • A large soda cup holds 32 ounces. What is this capacity in cubic<br><br> inches?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!