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QveST [7]
3 years ago
7

Answer both these questions and ill give the best answer brainliest

Mathematics
1 answer:
likoan [24]3 years ago
3 0

Answer:

Page 1:

A. exactly one solution

B. infinite many solutions

C. no solution

Page 2:

x = 3

Step-by-step explanation:

Page 1:

A. 3(x - 3) = 10x + 2

3x - 9 = 10x + 2

3x - 9 - 3x = -9

10x + 2 - 2 = 10x

-9 + 2 = -7

10x + 3x = 13x

-7 = 13x

13x / 13 = x

-7 / 13 = -7/13

B. -9x + 3 = -3(3x - 1)

-9x + 3 = -9x + 3

no matter what you'll end up with this

C. 2(3x - 1) = 6x - 1

6x - 2 = 6x - 1

there's no way to solve it :/

Page 2:

2/3x - 3 = 5

2/3x - 3 + 3 = 2/3x

5 - 3 = 2

2/3x = 2

2/3x / 2/3 = x

2 / 2/3 = 3

x = 3

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Answer:

12\ nickel

10\ quarter

Step-by-step explanation:

we know that

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Let

x------> the number of nickel coins

y-----> the number of quarter coins

we know that

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x=22-y -----> equation A

0.05x+0.25y=3.10 ----> multiply by 100 both sides

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Substitute equation A in equation B and solve for y

5(22-y)+25y=310

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20y=310-110

20y=200

y=10\ quarter

x=22-y  ------> x=22-10=12\ nickel

7 0
3 years ago
"An airplane ends up 540 miles and 20 degrees north of east from its departure point. If there was a steady wind of 30 mph from
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Answer:

vr = 540

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3 years ago
7 (x+5) = 4 (x+8) +6
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x=1

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6 0
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Answer:

The area of the paralellogram is 24 square units.

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