All categories

2 years ago

Point (21,28) is dilated by a scale factor of (-1/7) with a center of dilation on the origin. What are the new coordinates

Mathematics

2 answers:

AVprozaik [17]2 years ago

7 0

Answer:

Original value of x-axis =21

New value of x-axis = 21×(-1/7) = -3

Original value of y-axis =28

New value of y-axis = 28×(-1/7) = -4

Hence, the new coordinate is <em><u>(-3,-4)</u></em>.

Kamila [148]2 years ago

3 0

Step-by-step explanation:

Original x-value = 21

New x-value = 21 * (-1/7) = -3.

Original y-value = 28

New y-value = 28 * (-1/7) = -4.

Hence the coordinates of the new point is (-3,-4).

You might be interested in

Help ASAP please. question is in the picture.

Georgia [21]

1/2x+6 is your answer.

5 0

2 years ago

Read 2 more answers

Need help finding equation

Elden [556K]

Answer:

Step-by-step explanation:

Based on the two graphs I see at the bottom of the photo, you're looking at a quadratic function. The answer you put in is a linear equation.

Quadratic functions follow the form $ax^2+bx+c$ , where a, b, and c can be either positive or negative constants.

The table says that the equation, when graphed, should start at the top, slide to the bottom, and then slide back up to the top. So a must be positive.

c has to be -8 since it's the y-intercept.

So far, our equation is $ax^2+bx-8$ . We'll need to plug in some points in order to work out what $a$ and $b$ are.

Let's use $(-2,5)$ as the first set of points, and $(4,14)$ as the second set.

$5=a(-2)^2+b(-2)-8\\14=a(4)^2+b(4)-8\\$

Now we have 2 equations with 2 unknowns. Solve for one variable:

$5=4a-2b-8\\13+2b=4a\\\frac{13+2b}{4}=a$

Now substitute that into the second equation:

$14=(\frac{13+2b}{4})(4^2)+4b-8\\14+8=(13+2b)(4)+4b\\22-52=8b+4b\\-30=12b\\-\frac{30}{12}=-\frac{10}{4}=-\frac{5}{2}=b$

Now substitute the result into the first equation.

$\frac{13+2(-\frac{5}{2})}{4}=a\\\\\frac{13-5}{4}=a\\\\\frac{8}{4}=a\\\\ 2=a$

Now substitute our values back into the original equation:

$y(x)=2x^2-\frac{5}{2}x-8$

Please let me know if this is correct.

8 0

2 years ago

What is the poem Caged Bird about?

lesya692 [45]

The poem theoretically about a bird who wanted to live freely. he had a family; a mom, a dad, a brother, a sister. they just wanted to fly around and have fun and explore. but then all of a sudden the brother got eating buy mr. purple man. they all had to run. but then the sister got raped by mr. brown.

5 0

2 years ago

The cost price of a box and a pen is Rs 120. The box is sold at 10% profita the pen is sold at 10% loss. If the selling price of

matrenka [14]

Answer:

3.803% Profit

Step-by-step explanation:

First let us calculate total sales, then calculate the total cost, and then divide the two.

Sale: 120*1.1=132 and 52*.9=46.8

Cost: 120 and 52

Profit equation:

$\frac{Net sales-COGS}{Net Sales} =Profit$