In a random sample of males, it was found that 25 write with their left hands and 210 do not. in a random sample of females, it was found that 61 write with their left hands and 446 do not. use a 0.01 significance level to test the claim that the rate of left-handedness among males is less than that among females. complete parts

Step-by-step explanation:

Males: 25/210 = 0.1190 × 100 = 11.90%

Females: 61/446 = 0.1367 × 100 = 13.67%

11.90% < 13.67%

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: