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IgorC [24]
2 years ago
10

PRACTICE 1

Mathematics
1 answer:
kari74 [83]2 years ago
8 0

Answer:

ones

Step-by-step explanation:

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Help me please<br> Solve the system algebraically using substitution.
cluponka [151]

Answer:

y = 5/3

x = 8/3

Steps:

y = x - 1

2x + y = 7

Substitute y = x-1

(2x + x - 1 = 7)

Simplify: 3x - 1 = 7

Isolate x: 3x - 1 = 7:  x=8/3

Plug the valuse of x into the other equation (y = x- 1):    y = 8/3 - 1

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3 years ago
Which methods will determine 70% of 42?
Dennis_Churaev [7]

Answer:

C

Step-by-step explanation:

Given

(3x + 7)(2x - 6)

Each term in the second factor is multiplied by each term in the first factor, that is

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= 6x² - 18x + 14x - 42 ← collect like terms

= 6x² - 4x - 42 → C

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2 years ago
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9/24 Yall already know im stuck again will mark brainlyest
svp [43]

Answer:

Step-by-step explanation:

1. -35, 2

2. -72, -6

3. -16, 0

4. 40, 13

5. -15, 2

6. -30, 7

7. 30, 11

8. 42, -13

9. -3, -24

10. -4, 20

11. 7, 1

12. 4, -24

13. -7, -70

14. 4, 9

15. 7, -3

16. 9, 3

17. -10, 11

18. 6, -5

19. 11, 6

20. 1, -9

21. -9, 4

22. -8, 7

23. 6, 4

24. -7, -5

25. 11, 4

26. 10, 3

27. -8, 5

28. -9, 0

7 0
3 years ago
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