All categories

3 years ago

the scatter plot below represents the population of a small town (y) based upon the time in years (x) since the year was founded

Mathematics

2 answers:

Bumek [7]3 years ago

5 0

Y = 100/3 x

is the answer because it has an equal number of dots above and below the line.

saw5 [17]3 years ago

5 0

This one is D. There is a positive correlation and a y-intercept at 0

You might be interested in

3. Diego drew a scaled version of a Polygon P and labeled it Q.

bogdanovich [222]

Answer:

The scale factor used to go from P to Q is 1/4

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x -----> area of polygon Q

y -----> area of polygon P

$z^{2}=\frac{x}{y}$

we have

$y=72\ units^2$

Find the area of polygon Q

Divide the the area of polygon Q in two triangles and three squares

The area of the polygon Q is equal to the area of two triangles plus the area of three squares

see the attached figure N 2

Find the area of triangle 1

$A=(1/2)(1)(2)=1\ units^2$

Find the area of three squares (A2,A3 and A4)

$A=3(1)^2=3\ units^2$

Find the area of triangle 5

$A=(1/2)(1)(1)=0.5\ units^2$

The area of polygon Q is

$x=1+3+0.5=4.5\ units^2$

Find the scale factor

$z^{2}=\frac{x}{y}$

we have $y=72\ units^2$

$x=4.5\ units^2$

substitute and solve for z

$z^{2}=\frac{4.5}{72}$

$z^{2}=\frac{1}{16}$

square root both sides

$z=\frac{1}{4}$

therefore

The scale factor used to go from P to Q is 1/4

6 0

3 years ago

3 3/5 × 2 2/3 <br> Answer in mixed number please

ExtremeBDS [4]

6 6/15 because if you multiply the mixed number first then multiply the fraction

8 0

3 years ago

Identify the factors of x2 + 25y2. ...?

Sveta_85 [38]

Is the equation like this? x^2 + 25y^2?
If the equation is like that, the answer would be (x-5y)^2 or (x-5y)(x-5y).
how did I get this? Just divide the factors or the get the square root of 25y^2 and it would be 5y. Then just try if it is positive or negative. In this case, it is negative because there is no factor w/ no exponential form. I hopemy answer helped you.

4 0

4 years ago

Shape ABCD is an arrowhead.<br> Use the X<br> tool and mark point D<br> accurately on the graph.

ehidna [41]

Answer:did you know i like frogs

Step-by-step explanation: because i do

7 0

3 years ago

If the federal reserve sells 70,000 in treasury bonds to a bank at 9%

Anton [14]

Answer:

it is decreased by $70,000

Step-by-step explanation:

Federal reserve sells $70,000 in treasury bonds to a bank at 9%

6 0

3 years ago