The equation of the regression line for the data in the table is ý = 4.1x - 139,
where x represents the height and ŷ is the predicted walking speed.

what is the meaning of 4.1 in the equation?
a. for every 1 m/min increase in walking speed, height increases by
4.1 inches.

b. for every 1-inch increase in height, walking speed increases by 4.1 m/min.
c. for every 1 m increase in distance walked, walking speed
increases by 4.1 m/min.

d. for every 1-minute increase in walking time, walking speed
increases by 4.1 m/min.

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,