Help. I'll give brainliest Show how you can solve this proportion using both the cross-product property and the reciprocal
property.
2/5 = 38/x

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal