Scatterplots - Linear Regression 1 of 8 1 of 8 Items
Item 1
POSSIBLE POINTS: 12.5
A baseball coach graphs some data and finds the line of best fit. The equation for the line of best fit is y=0.32x−20.51
y
=
0.32
x
−
20.51
, where x is the number of times at bat and y is the number of hits.

How many hits should he expect from a player who is at bat 175 times?

35 hits

49 hits

609 hits

62 hits

15 batches are the most you can make

step-by-step explanation:

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)