K=am+3mx solve for m

1 answer:

7 0

Assuming the variables are constants, you isolate m. So move am to the left. K-am=emx. Now divide ex. This gives you, m=(K-am/ex)

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Solve for x: 2(x + 3)2 − 4 = 0

asambeis [7]

Answer:

Option D) x = −4.41, −1.59

Step-by-step explanation:

We are given the following expression in the question:

$2(x + 3)^2 - 4 = 0$

Solving the above expression, we get:

$2(x + 3)^2 - 4 = 0\\2(x^2+9+6x)-4=0\\\text{Identity: }(a+b)^2 = a^2 + b^2 + 2ab\\2x^2+18+12x-4=0\\2x^2+12x+14=0\\\text{Using the quadratic formula:}\\ax^2 + bx +_ c = 0\\\\x = \displaystyle\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\text{Puting a = 2, b = 12, c = 14}\\\\x = \displaystyle\frac{-12\pm \sqrt{(12)^2-4(2)(14)}}{2(2)}\\\\x = \frac{-12 \pm 5.65}{4}\\\\x = \frac{-12 + 5.65}{4}, \frac{-12-5.65}{4} = -1.5875, -4.4125 \approx -1.59, -4.14$

6 0

3 years ago

Read 2 more answers

Mona wants to buy carpet for a floor in her house. The floor is rectangular with a width of 5 m and a length of 8 m. Two shops s

pshichka [43]

Answer:

Mona will save a total of $7 by going to Carpet World.

Step-by-step explanation:

First, we need to calculate the total area of the floor by multiplying the width by the length...

5m * 8m = 40m

Now we calculate the amount that it would cost to buy the carpet from each of the establishments. For the first establishment, we can buy 16 $m^{2}$ and get the next 8 $m^{2}$ half off and that would leave another 16 $m^{2}$ at full price. The second establishment we have a 5% off (0.95 of official price) for every 8 $m^{2}$ , since out total area is 5 times this amount then our total will have a 5% off.

Establishment 1: (16 $m^{2}$ * 2.20) + (8 $m^{2}$ * 1.10) + (16 $m^{2}$ * 2.20) = $79.20

Establishment 2: (40 $m^{2}$ * 1.90) * 0.95 = $72.20

Difference: 79.20 - 72.20 = $7

Mona will save a total of $7 by going to Carpet World.

4 0

3 years ago

Read 2 more answers

Help 30 minutes to turn in

dangina [55]

First, you are going to want to get the terms to the same power of 10 in scientific notation. Realize that $9.3 \cdot 10^7 = 9.3 \cdot 10^6 \cdot 10^1= 93 \cdot 10^6$ . Essentially, we have converted the $9.3 \cdot 10^7$ to a term with $10^6$ . Now, we can subtract the values in each term that are not 10 as shown below: