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zloy xaker [14]
3 years ago
12

4 2/5 is equal to how many tenths? Please explain! Thanks alot.

Mathematics
2 answers:
OlgaM077 [116]3 years ago
7 0
4 & 2/5  =  ?/10
(4 = ?/10) + (2/5 =?/10)      * 1= 5/5 or 10/10
(4 x 10/10 = 40/10) + (2/5 = 4/10)
40/10 + 4/10 =
44/10
Molodets [167]3 years ago
4 0
4.4 so that is 4 and 4 tenths
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If you drive 9hours and 465 kilometers how long would it take you to drive 768 kilometers
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3 years ago
15 - 3k = 10(k-5) <br> Can someone please answer this
solmaris [256]

Answer:

k = 5

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

15 - 3k = 10(k - 5)

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

  1. Distribute 10:                              15 - 3k = 10k - 50
  2. Add 3k to both sides:                15 = 13k - 50
  3. Add 50 to both sides:                65 = 13k
  4. Divide 13 on both sides:            5 = k
  5. Rewrite:                                       k = 5

<u>Step 3: Check</u>

<em>Plug in k into the original equation to verify it's a solution.</em>

  1. Substitute in <em>k</em>:                    15 - 3(5) = 10(5 - 5)
  2. Subtract:                              15 - 3(5) = 10(0)
  3. Multiply:                               15 - 15 = 0
  4. Subtract:                              0 = 0

Here we see that 0 does indeed equal 0.

∴ k = 5 is a solution of the equation.

5 0
3 years ago
Read 2 more answers
a leatherback turtle swims at a constant rate of 2.5 kilometers per hour, at its constant rate of speed how long will it take fo
LekaFEV [45]
Hello there!

So, if this turtle is only going 2.5 miles per hour. This would mean that (EACH) hour, this turtle only arrived 2.5 miles. So, we do,

\boxed{10.0 \left \{ {{2.5+2.5=5.0} \atop {2.5+2.5=5.0}} \right.}

We would have to count how many ("2.5's" they are above.)

We count only 4.

I would take this turtle 4 miles to swim 10 kilometers.
5 0
4 years ago
I need help with 2 and 3
leonid [27]
The answer for 2 is 320 because you have to keep counting by 40's
8 0
4 years ago
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