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m_a_m_a [10]
3 years ago
12

Help me ASAP........

Mathematics
2 answers:
WARRIOR [948]3 years ago
6 0

Answer:

9). 9

10). 392

11). 420

12). 54

13).360

14). 182

15). 640

16). 15

17). 50

18). 50

19). 53.6

20). 1512

Step-by-step explanation:

9). 45/9 = 5

10). 2 *14² = 2* 196 = 392

11). 5 * 12 * 7 = 60 * 7 = 420

12). 1/2 * 9 * 12 = 54

13).1/2(24)(9 + 21) = 12 * 30 = 360

14). 14 * 13 = 182

15). 16 * 8 * 5 = 640

16). 75/5 = 15

17). 2(5²) = 2 * 25 = 50

18). 8(2.5 + 4.2) = 8 * 6.7 = 53.6

19). 1/2(3)(5 + 6) = 33/2 = 16.5

20). 3.14(6²) = 3.14 * 36 = 113.04

jekas [21]3 years ago
3 0

Answers:

9). 45/9 = 5

10). 2 *14² = 2* 196 = 392

11). 5 * 12 * 7 = 60 * 7 = 420

12). 1/2 * 9 * 12 = 54

13).1/2(24)(9 + 21) = 12 * 30 = 360

14). 14 * 13 = 182

15). 16 * 8 * 5 = 640

16). 75/5 = 15

17). 2(5²) = 2 * 25 = 50

18). 8(2.5 + 4.2) = 8 * 6.7 = 53.6

19). 1/2(3)(5 + 6) = 33/2 = 16.5

20). 3.14(6²) = 3.14 * 36 = 113.04

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Step-by-step explanation:

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6 0
3 years ago
Solve the equation x + 0.7 = 1 - 0.2x in two different ways.Then check your answer.Show your work!
expeople1 [14]
Simplifying
x + 0.7 = 1 + -0.2x

Reorder the terms:
0.7 + x = 1 + -0.2x

Solving
0.7 + x = 1 + -0.2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '0.2x' to each side of the equation.
0.7 + x + 0.2x = 1 + -0.2x + 0.2x

Combine like terms: x + 0.2x = 1.2x
0.7 + 1.2x = 1 + -0.2x + 0.2x

Combine like terms: -0.2x + 0.2x = 0.0
0.7 + 1.2x = 1 + 0.0
0.7 + 1.2x = 1

Add '-0.7' to each side of the equation.
0.7 + -0.7 + 1.2x = 1 + -0.7

Combine like terms: 0.7 + -0.7 = 0.0
0.0 + 1.2x = 1 + -0.7
1.2x = 1 + -0.7

Combine like terms: 1 + -0.7 = 0.3
1.2x = 0.3

Divide each side by '1.2'.
x = 0.25

Simplifying
x = 0.25

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