What is the solution of the following system?

-2x-y=1

-4x-2y=-1

A: Infinitely many solutions

B: no solutions

C: (3, 8)

D: (-3, - 8)

How can you find the perimeter of a shape that has four tips

You have a bag of 12 marbles. Six are blue, two are green, three are yellow, and one is red. If you reach into the bag and pull out one marble, what is the probability that it will be yellow?

a sample of 120 employees of a company is selected, the average age is found to be 37 years. determine whether the given value is a statistic or parameter. explain your answer.

A bulldozer does 30,000 joules of work to push another boulder a distance of 20 meters. how much force is applied to push the boulder?

7.3+22.63-8.3x+13.279

Find the value of this expression if x = 4 and y = - 2 xy / 5

What is 7lb 4 ounces converted to ounces

Is 4:8 and 5:10 equivalent as ratios?

Five tenths of a circle plus one fifth of a circle is what percent of a circle?

Your job is to sort and sack marbles for sale. A bag contains 55 marbles, some red and some green. If there are 11 red marbles, what is the ratio of red to green marbles?