25 results
1. ## Algebra22222!!!

Choose the ordered pair that is a solution to the system of equations. 3x - y = 10 -x + y = -4 (3, -7) (-1, 3) (3, -1) (3, 1) Follow the example I gave in your previous question. I'm not going to do all of them. You want to eliminate one of the variable

2. ## math

x+5y= -3 3x-2y= 8 sovle using substituion

3. ## math

sovle: (3x - 2y)^2 The answer is 9x^2 + 4y^2 - 12xy but I do not know how to get the 12xy part. 20 - 4/5x is greater that or equal to 16, then: The answer is x is less thatn or equal to 5 but again I do not know how to get this.

4. ## chemistry

A + B -> C + D (reversible reaction) a 2L container contains 1 mol of C, 1.6 mol of D, 0.8 mol of A snd 0.8 mol of B. Calculate the equillibrium composition of the reaction. Kc =0.065 I think C and D are forming A and B because there is higher

5. ## Math Help

Sovle w^2-13w+42=0 I get -6,-7 is this correct????

6. ## Algebra

1,Sovle using the substitution method. Show your work. If the system has no solution or an infinite number of solutions,state this. -x - 3y = -20 5x + 3y =40 2 Sovle using the elimination method. Show your work. If the system has no solution or an infinite

7. ## Math

Describe the sequence of transformations from quadrilateral ABCD to A'B'C'D A: -8,8 B: 8,-2 C: 4,-8 D: 4,-2 A': 2,-10 B': 8,-10 C': 2,-6 D: 8, -5 SOMEONE HELP ME SOVLE THIS PLEASE

8. ## science and medicine

I am having some trouble working this out . Could you possibily show me how to work it out.Thank You! A bicyclist rode into the country for 5 h. In returning, his speed was 5 mi/h faster and the trip took 4 hours. What was his speed each way? Could somone

9. ## math

Question: Find the given percent or fraction of the number. 14. 30% of 256 15. 25% of 2,048 16. 2/3 of 24 17. 5/6 of 90 How do i figure those out? I don't whant the answer I wanna know how to sovle them.

10. ## very basic algebra

I was told long ago way back when that when you have something like this -x = 7 you solve for x by doing the following (-x = 7)- x = -7 but now that I think about it your not actually multiplying by negative one what is actually happening is this right???

11. ## probability

A box contains 4 purple and 9 yellow balls.We take out 2 balls (with replacement). What is the probability of drawing a second ball yellow, if the first ball was purple? please sovle in details..thanks

12. ## chemistry

A + B -> C + D (reversible reaction) a 2L container contains 1 mol of C, 1.6 mol of D, 0.8 mol of A snd 0.8 mol of B. Calculate the equillibrium composition of the reaction. Kc =0.065 I think C and D are forming A and B because there is higher

13. ## algebra

The equation D=1.2times square root h gives the distance, D, in miles a person can see to the horizon from a height, h, in feet. a. sovle for h. b. Long's Peak is 14,255 feet in elevation. How far can you see to the horizon for Long's Peak? Can you see

14. ## algebra

he is missing 3 cents to buy an ice cream bar. she is missing 5 cents to buy the same ice cream bar. they combine their money but they are still 1 cent short. how much is the ice cream bar? Let x denote how much he has and y denote how much she has. Let p

15. ## geometry

Two similar polygons are shown. The side opposite to the base side of bigger polygon is labeled x. The adjacent side on the left of base is labeled 6. The adjacent angles on left and right vertices opposite to the base angles are labeled y minus 73 degrees

16. ## alg 2

sovle 7x + 12x -9 - 4x -3

18. ## math

how do i sovle this equation. x/5 = 12/15

19. ## math (algerba 1)

how would you sovle this? multiply: (a + 5) (a - 5)

20. ## algebra

Sovle by substitution: 2x-3y=9 4x-6y=-12

21. ## math

sovle the following equation 8/x-1=9/(x)(x+2) i know the answer is -1,7 but how?

22. ## Algebra

sovle the compound inequality 8

23. ## math

sovle the linear equation -8.3=x+6.1 Thank you