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Misha Larkins [42]
3 years ago
7

What is 3=7(4 - 2u)-6u

Mathematics
2 answers:
Elodia [21]3 years ago
8 0

Answer:

u = 5/4

Step-by-step explanation:

<u>Step 1:  Distribute on the right side </u>

3 = 7(4 - 2u) - 6u

3 = (7 * 4) + (7 * -2u) - 6u

3 = 28 - 14u - 6u

<u>Step 2:  Combine like terms </u>

3 = 28 + (-14u - 6u)

3 = 28 + -20u

<u>Step 3:  Subtract 28 from both sides </u>

3 - 28 = 28 - 20u - 28

-25 = -20u

<u>Step 4:  Divide both sides by -20 </u>

-25 / -20 = -20u / -20

5/4 = u

Answer:  u = 5/4

alisha [4.7K]3 years ago
5 0

Answer:

u = 5/4

Step-by-step explanation:

to evaluate for the value of u we would simply open the bracket and then evaluate for the value of u by collecting the like terms together.

solution

3=7(4 - 2u)-6u

3 = 28- 14u - 6u

collect the like terms

3 + 14u + 6u = 28

20u = 28 - 3

20u = 25

divide both sides by the coefficient of u which is 20

20u/20 = 25/20

u = 5/4

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A sale person is given a choice of two salary plans 1weekly salary of $500 plus 4%commission of sale plan 2 is a straight commis
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Answer:

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Step-by-step explanation:

Given that:

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Weekly sales for which both the plans will make the same sales?

Solution:

Let the weekly sales = $x

As per question statement:

Salary as per Plan 1 = $500 + 4% of x

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Putting both the salaries to equal to find the total weekly sales.

$500 + 4% of x = 8% of x

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Therefore, the answer is:

For the sales of $12500, the salary will be same from both the plans.

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2 years ago
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What is 9,276 divided by 8
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6. The mass of one coin is 16.718 grams. The mass of a second coin is 27.22 grams. How much greater is the mass of the second co
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Please help!
erik [133]
For the answer to the question above, 
1 + nx + [n(n-1)/(2-factorial)](x)^2 + [n(n-1)(n-2)/3-factorial] (x)^3 

<span>1 + nx + [n(n-1)/(2 x 1)](x)^2 + [n(n-1)(n-2)/3 x 2 x 1] (x)^3 </span>

<span>1 + nx + [n(n-1)/2](x)^2 + [n(n-1)(n-2)/6] (x)^3 </span>

<span>1 + 9x + 36x^2 + 84x^3 </span>

<span>In my experience, up to the x^3 is often adequate to approximate a route. </span>

<span>(1+x) = 0.98 </span>

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<span>Substituting: </span>

<span>1 + 9(-0.02) + 36(-0.02)^2 + 84(-0.02)^3 </span>

<span>approximation = 0.834 </span>

<span>Checking the real value in your calculator: </span>

<span>(0.98)^9 = 0.834 </span>

<span>So you have approximated correctly. </span>

<span>If you want to know how accurate your approximation is, write out the result of each in full: </span>

<span>1 + 9(-0.02) + 36(-0.02)^2 + 84(-0.02)^3 = 0.833728 </span>

<span> (0.98)^9 = 0.8337477621 </span>

<span>So it is correct to 4</span>
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