Need ! there are 3 white marbles and 7 blue marbles in a bag. jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. what is the probability of jamie’s picking 2 white marbles. a. 1/15 b. 1/18 c. 1/20 d. 1/7

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two