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lisabon 2012 [21]
3 years ago
7

Solving the Quadratic equations by completing the square: 2x^2-7x+2=0

Mathematics
1 answer:
Zigmanuir [339]3 years ago
3 0

Step-by-step explanation:

Check the above photos...

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A department store buys 500 shirts at a cost of ​$6,000 and sells them at a selling price of ​$20 each. Please, find the percent
marysya [2.9K]

Answer:

60% i got it

Step-by-step explanation:

6000/500= 12

12/20*100= 60%

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You put $500 in a savings account. The account earns $15.75 simple interest in 6 months. What is the annual interest rate? Show
marta [7]
So in 6 months (1/2yr) you earned $15.75 interest, if we double that we find the total interest you would gain for that year, 15.75x2= $31.5 total interest for that year.

To find the annual rate divide the interest gained by the amount deposited, 31.5/500 = 0.063% p.a.
3 0
3 years ago
Is there a commutative property of subtraction that states a-b=b-a? investigate and make a conclusion that you justify.
Rom4ik [11]

No is your answer

Assuming that b ≠ a, the answers will not be the same.

For example, (remembering that b ≠ a) let us assume that b = 10, a = 5

10 - 5 = 5

5 - 10 = -5

5 ≠ -5

So the commutative property of subtraction does not work unless in certain cases, in which a = b.

hope this helps

5 0
3 years ago
PLSS HELP ME WITH THIS! 15 POINTS!
irina [24]

Answer:

2w - 13

Step-by-step explanation:

here we just simplify the expression,

3w - 4 - w - 9

becomes:

2w - 13

5 0
2 years ago
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WILL GIVE BRAINLIEST!<br> Translate into a variable expression. the sum of sixteen and c
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Answer:

16+c

Step-by-step explanation:

Sum means we will have to add. When it says "sum of sixteen and c" it is telling us to add both sixteen and c together.

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3 years ago
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