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Paladinen [302]
3 years ago
10

Your friend incorrectly says the solution to the equation 11.2y - 7.4y=141.36 is y=7.6 what error did your friend make?

Mathematics
2 answers:
DerKrebs [107]3 years ago
6 0
The error is clearly choice B.

11.2y - 7.4y should be subtracted not added.

Answer: Choice B
cupoosta [38]3 years ago
5 0

Answer:

The answer will be B.  Added 7.4yplus 11.2y

Step-by-step explanation:

Answer:  Added 7.4 plus 11.2y

Hope this helps :)

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Here is a list of numbers:<br> 79, 38, 99, 10, 8, 4, 85, 74, 13<br> Calculate the range.
ivanzaharov [21]

Answer:

Range is 95.

Step-by-step explanation:

Highest value - lowest value = range.

99 - 4 = 95

3 0
3 years ago
Solve -3x=2x^2-4 using quadratic formula
frozen [14]

Answer:

x=-2.35078, 0.850781

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Quadratic Formula: x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

Step-by-step explanation:

<u>Step 1: Define equation</u>

-3x = 2x² - 4

<u>Step 2: Rewrite into Standard Form</u>

0 = 2x² + 3x - 4

<u>Step 3: Define variables</u>

a = 2

b = 3

c = -4

<u>Step 4: Find </u><em><u>x</u></em>

  1. Substitute:                    x=\frac{-3\pm\sqrt{3^2-4(2)(-4)} }{2(2)}
  2. Evaluate:                       x=\frac{-3\pm\sqrt{9-4(2)(-4)} }{2(2)}
  3. Multiply:                        x=\frac{-3\pm\sqrt{9+32} }{4}
  4. Add:                              x=\frac{-3\pm\sqrt{41} }{4}
  5. Evaluate:                      x=\frac{-3\pm6.40312}{4}
  6. Evaluate:                      x=-2.35078, 0.850781

And we have our final answer!

6 0
3 years ago
the value of x + y is a negative, and x is a positive integer. What must be ture about y ? Explain....
dimulka [17.4K]
Y has to be less than negative X
8 0
3 years ago
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IRINA_888 [86]

Answer:

the length of DP will be 13.1

Step-by-step explanation:

Hope this helps mark me brainliest!!!

8 0
2 years ago
McKenna earns money each time she shovels snow for her neighbors. McKenna plots points on the coordinate plane below to show how
tester [92]

Answer:

2,12

Step-by-step explanation:

yee

6 0
3 years ago
Read 2 more answers
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