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yuradex [85]
3 years ago
14

It took Amber 5 hours 16 minutes to finish a race. Her time at the halfway marker was 2 hours 49 minutes. How long did it take A

mber to complete the second half of the race?
-1 hour =?
-So, 5 hr 16 min = 4 hr ? Min?
-4 hour 76 min- 2 hr 49 min =?
Mathematics
2 answers:
KIM [24]3 years ago
8 0
3hr 33 min I guess not really sure
Ira Lisetskai [31]3 years ago
8 0
One hour=60 minutes
5 hours=300 minutes
2 hours=120 minutes
5 hours and 16 minutes=316 minutes
2 hours and 49 minutes=169 minutes
316 minutes-229 minutes=147 minutes
147 minutes=2 hours and 27 minutes
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Solve 4x + 1 = 3 – 2x
romanna [79]

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x = 1/3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

4x + 1 = 3 - 2x

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Add 2x on both sides:                    6x + 1 = 3
  2. Subtract 1 on both sides:                6x = 2
  3. Divide 6 on both sides:                   x = 1/3

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    4(1/3) + 1 = 3 - 2(1/3)
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Here we see that 7/3 does indeed equal 7/3.

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Which of the statements are true about the function f given by f(x) = 100-e? Select all that apply.
tatiyna

From the above function, it is clear that the value of f is never 0. Hence the statement that is true is (Option E), See explanation of same below.

<h3>What is the explanation for the above function?</h3>

Note that the function is related to Euler's number which is depicted as:
e ≈ 2.7182. The function is given as:

f(x) = 100 * e^{-x}

Assuming x = -2, we'd have:

100 * 2.7182^{-2}

= 271.82^{-2}

= 0.00001353354

Hence, even when x tends < 0 the function f(x) thus, is never 0. See the attached graph for confirmation.

Learn more about functions at:

brainly.com/question/25638609

#SPJ1

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