Erica is training for a marathon This week she ran 6 less than 2 times the number of miles that she ran last week in these two weeks ran a total of 42 miles write a system of equation and find x the number of miles she ran this week and y the number of miles she ran last week

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.