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goldfiish [28.3K]
3 years ago
14

Solve this quadratic equation using the quadratic formula. 2x2 - 10x + 7 = 0

Mathematics
2 answers:
frez [133]3 years ago
8 0

Answer:

Step-by-step explanation:

2x^2-10x+7         A=1, B=-10. C=7

-(-10)±√-10^2-4(1)(7)

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

2(1)

10±√100-28

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

2

10±√72

-----------

2

<u>10±8.485281374</u>

         2

<u>10+8.485281374 </u>=9.24

             2

<u>10-8.485281374</u> =0.76

          2

alexgriva [62]3 years ago
5 0

Answer:

x= 5/ 2 + 1/2  √11

or  x= 5/ 2 + −1/ 2 √11

Step-by-step explanation:

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A car’s original price was $26,500. Mr. Thomas paid $19,610. What percent discount did Mr. Thomas receive on the car?
geniusboy [140]
26,500 - 19,610 = 6,890

6,890 would be your price discount, but now you'd have to find your percent discount. Make it into an equation to make things easier.

6,890/26,500 = p/100

(6,890*100)/26,500 = p

6,890*100 = 689,000

689,000/26,500 = 26

The price discount would be 26%.
4 0
3 years ago
On Monday, the book store sold 75 books. On Tuesday, the bookstore sold 125 books. The bookstore must sell 500 books by Friday.
Anettt [7]
All you have to do is add 125 by 75 and you get 200. Now you have to subtract 500 by 200 which is 300 and here you go your answer is 300. The bookstore has to sell 300 more books in order to sell 500 books by friday
5 0
3 years ago
Question 8 (1 point)
AleksandrR [38]

Answer:

solution is x=3

Step-by-step explanation:

logx-log3=log(x-2)

apply log property

log a- log b= log a/b

logx-log3=log(x-2)\\log (\frac{x}{3} )=log(x-2)

we have log on both sides

so we remove the log and make the arguments equal

\frac{x}{3} = x-2

solve for x, multiply whole equation by 3

x=3(x-2)\\x=3x-6\\x-3x=-6\\-2x=-6\\x=3

now plug in 3 for x  and check

logx-log3=log(x-2)\\log3-log3=log(3-2)\\0=0

solution is x=3

8 0
3 years ago
The table below displays the purchases that Graphic DesignWorks made from
AveGali [126]

If Graphic Design Works uses LIFO and has 125 shorts left in its inventory, the value of its current stock is <u>D. $1485</u>.

<h3>What is the LIFO inventory system?</h3>

The Last-In, First-Out (LIFO) method is an inventory valuation method that assumes that the last units to arrive in inventory are sold first.

The LIFO method is allowed under US GAAP.  It is the opposite of FIFO (First-in, First-Out).  The FIFO method assumes that the units bought first are the first to be sold.

<h3>Data and Calculations:</h3>

Month of                    Number    Price per        Total Cost

Purchase                  of shorts       shorts

June                             40                $11                    440 (40 x $11)

July                              60                $12                   720 (60 x $12)

August                        80                 $13                1,040 (80 x $13)

September                 90                 $14                1,260 (90 x $14)

Ending inventory      125

Using LIFO:

Value of ending inventory = $1,485 ($440 + $720 + $13 x 25)

Thus, if Graphic Design Works uses LIFO and has 125 shorts left in its inventory, the value of its current stock is <u>D. $1485</u>.

Learn more about the LIFO inventory method at brainly.com/question/6640325

#SPJ1

6 0
2 years ago
Circle A has center of (4, 6) and a radius of 5, and circle B has a center of (1, 0) and a radius of 15.What steps will help sho
melisa1 [442]

Answer:

Dilate circle A by a scale factor of 3.

Step-by-step explanation:

Generally, similar figures have sides in the same ratio

3(5) = 15

When dilate A by factor 3, it will look exactly like B

4 0
3 years ago
Read 2 more answers
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