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Zepler [3.9K]
2 years ago
11

Which data set does this stem-and-leaf plot represent?

Mathematics
1 answer:
Nesterboy [21]2 years ago
3 0

Answer:

15, 15, 15, 15, 24, 28, 36, 45, 75, 75, 76, 77, 80, 86

Step-by-step explanation:

you read the left side for each digit on the left side

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Solve 5x^2+2x=1 using either factoring, square root method, completing the square or quadratic formula.
wolverine [178]

Answer:

x = -1 ± √6 / 5

Step-by-step explanation:

Solve 5x^{2} + 2x = 1

move 1 to the left side of the equation by subtracting it from both sides.

5x^{2} + 2x - 1 = 0

Use the quadratic formula to find the solutions.

-b± \sqrt{b^2 - 4 (ac)}/ 2a

Substitute the values a = 5 , b = 2, and c = -1 into the quadratic formula and solve for x

-2±\sqrt{2^2 - 4(5 - 1)}/ 2 ⋅ 5

Simplify.

x = -2 ± 2 \sqrt{6}/ 10

x = -1 ± \sqrt{6}/ 5

Exact Form:

x = -1 ± \sqrt{6}/ 5

4 0
3 years ago
Solve the system of equations.<br><br><br> −5x+2y=9<br> y=7x<br> ​
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Answer:

x=1  y=7

Step-by-step explanation:

−5x+2y=9

y=7x

Substitute the second equation into the first

-5x +2(7x) = 9

Distribute

-5x +14x = 9

Combine like terms

9x=9

Divide by 9

9x/9 =9/9

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y = 7(1)

y = 7

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3 years ago
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How do you show work for 831÷4
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The answer will be 207 with a remainder of 3. I attached my paper work for you to see the actual steps.


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ILL GIVE U BRAINLYIST IF U GET IT RIGHT
yawa3891 [41]

Answer:

34

Step-by-step explanation:

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3 years ago
Need help with simplifying expressions
Ilia_Sergeevich [38]

Answer:

A) -20

Step-by-step explanation:

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3 years ago
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