doctor observe that the pulse rate of four students is 72 Three Students is 78 to students is 80 find the mean of the pulse rate of the above students​

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?