# math

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A science teacher has a supply of 50% sugar solution and a supply of 80% sugar solution. How much of each solution should the teacher mix together to get 105 ML of 60% sugar solution for an experiment
70 ML of the 50% solution and 35 ML of the 80% solution
35 ML of the 50% solution and 70 ML of the 80% solution
70 ML of the 50% solution and 70 ML of the 80% solution
35 ML of the 50% solution and 35 ML of the 80% solution

• math - ,

.5x+.8(105-x)=.6*105
x = x=70

so, (a)

Even without doing the calculation, this can be easily solved.

Since 60% is closer to 50% than it is to 80%, more of the lower concentration will be needed.

• math - ,

• math - ,

Hey that girl I am working on that test now can you help me?

• math - ,

never mind

• math - ,

The answers for the whole thing is
1.D
2.A
3.C
4.D
5.C
6.D
7.A
8.C
9.A
10.B
11.A
12.A
13.A
14.B
15.A
16.B
17.A
18.A
19.B
20.C
21.A
22.A
23.D
24.B

• math - ,

• math - ,

THESE ARE ALL WRONG DON'T LISTEN TO HIM!

• lexi's bestie - ,

hey guys here is the real answers, I'm sorry if they change any questions:

1. A [1.4, 2.2]
2. D [-2, -9.5]
3. C [infinitely many]
4. D [none]
5. C [infinitely many]
6. D [none]
7. C
8. D
9. A [y≥60; 2x+2y≤260]
10. B [4 days]
11. A [\$0.50 per cookie; \$1.25 per brownie]
12. A
13. A
14. B [1.5, 10]
15. D [5,1]
16. B [750 T-Shirts
17. B [16 quarts...]
18. B [44 mL]
19. C
20. A
21. A [5x+7y≥140]
22. A
23. A
24. D

• math - ,

• math - ,

• math - ,

yes it's the unit test. Xx

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