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RSB [31]
4 years ago
12

Error Analysis Describe and correct the error made in solving the equation

Mathematics
1 answer:
Mama L [17]4 years ago
3 0

x+3 is denominator, so we must exclude x=-3 from solution

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Solve for the roots in simplest form by completing the square <br> 6x^2+120x+2070=0
Kitty [74]

Answer:

Step-by-step explanation:

First, we can divide out the common factor, 6

6x^2 + 120x + 2070 = 0\\x^2 + 20x + 345 = 0\\

Now we complete the square

(x^2 + 20x + (\frac{20}{2})^2) + 345 - (\frac{20}{2})^2\\(x^2 + 20x + 100) + 345 - 100\\(x+10)^2 + 245\\

(x+10)^2 = -245\\x + 10 = \sqrt{-245}\\x = i\sqrt{245}  - 10\\x = -10 \pm i\sqrt{245}

8 0
3 years ago
Which of these equations has infinitely many solutions?
Lera25 [3.4K]

Answer:

A. W+ 12 = 6 + W + 6

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find the edge of cube whose lateral surface area is 36cm2​
belka [17]

Answer:

9cm

Step-by-step explanation:

4*s=36

s=36/4

s=9cm

4 0
3 years ago
The compound periods multiplied by the number of years is 4t. The initial number of cars serviced is 920. The growth factor is r
Mrac [35]

The number of compounding per year isN = 920(1+0.03)^4t

<h3>How can the number of compounding per year be calculated?</h3>

This can be calculated by making use of the formular;  920(1.03)^4t and use the  compound interest equation which is N=P( 1+r/n)^nt

We know that 12% was given as the rate per year, then to get the quarter rate we divide by factor of 4, which is  12/4= 3%

The compounding for t years = n*t = 4t where n=4.

and the Initial number of cars serviced=920

Then we can substitute the values into the above equation, we have Thus N = 920(1+0.03)^4t

Learn more about compound interest at:

brainly.com/question/13023589

#SPJ1

CHECK THE COMPLETE QUESTION BELOW:

Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. A car repair center services 920 cars in 2012. The number of cars serviced increases quarterly at a rate of 12% per year after 2012. Create an exponential expression to model the number of cars serviced after t years. Then, match each part of the exponential expression to what it represents in the context of the situation. 920(1.03) is the number of cars multiplied by 1.03. The quarterly rate of growth is 0.03 or 3%. The compound periods multiplied by the number of years is 4t. The initial number of cars serviced is 920. The growth factor is represented by 1.03. The growth rate is 1.03. Exponent arrowRight Base arrowRight Coefficient arrowRight Rate arrowRight

7 0
2 years ago
The table shows how much a store charges for certain numbers of pencils.
kirza4 [7]

Answer:

what you mean  by maybe!!!!

Step-by-step explanation:

this is the wrong answer its b because you multiply the cost by 4. i=do the same in each equation. and see if it gives you 0.72

8 0
3 years ago
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