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Mrac [35]
3 years ago
13

A construction company needs to remove 10 tons of dirt from a construction site. They can remove 2/5 tons of dirt each hour. How

long will it take to remove the dirt.
Mathematics
1 answer:
Oliga [24]3 years ago
5 0
2 and 1/2. Bc 2/5 = 4/10. So 1 hr. = 4/10 2hr. =8/10 and then you need 2 more tons which will only take you half an hour.
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Andrej [43]

Answer:

x = 12

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

-2(x - 4) = -16

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

  1. Distribute -2:                    -2x + 8 = -16
  2. Isolate <em>x</em> term:                  -2x = -24
  3. Isolate <em>x</em>:                           x = 12

<u>Step 3: Check</u>

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

  1. Substitute:                    -2(12 - 4) = -16
  2. Subtract:                       -2(8) = -16
  3. Multiply:                        -16 = -16

Here we see that -16 does indeed equal -16.

∴ x = 12 is a solution of the equation.

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3 years ago
What is the equivalent to i233
Setler79 [48]

Answer:

Step-by-step explanation:

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Step-by-step explanation:

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Use synthetic division here; it's the fastest approach.

Given that (x + 2) is a factor, take -2 and use this as the divisor in synthetic division:

-2     4         c                1           2

                  -8    (-2c+ 16)      (4c-34)

       ---------------------------------------------

         4    (c - 8)   (-2c + 17)     4c - 32

The remainder, 4c - 32, must equal zero if (x + 2) is a factor.

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Answer:

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