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aalyn [17]
3 years ago
14

HURRY!!! How is completing the square beneficial? (in quadratic equation)

Mathematics
1 answer:
givi [52]3 years ago
7 0
"Completing the square" is a step in the solution of quadratic equations. It can be accomplished without the guesswork or trial-and-error associated with methods like factoring, and it always leads to a solution. It is the method by which the quadratic formula is derived.
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You owe $1,000 on a credit card that has an interest rate of 27.99% and make only the minimum payment of $20 each month. Which a
mel-nik [20]

Answer: The credit card will paid off within 10 years, therefore the correct option is D.

Explanation:

Let the number of years in which the credit card will aid of be x.

It is given that amount owed on credit card is $1000 with interest rate 27.99%.

So the amount of interest is calculated as,

1000\times \frac{27.99}{100} =\$27.9

The total amount have to pay is,

\$1000+\$279.9=\$1279.9

The minimum payment is $20 each month.

x=\frac{1279.9}{20}

x=63.995

So, the credit card will paid of in 63.995 months. We know that 1 year =12 months.

\frac{63.995}{12} =5.33

Therefore, the will paid of in 5.33 years, s we can say that the credit card will paid off within 10 years, therefore the correct option is D.

7 0
3 years ago
Read 2 more answers
Pls ASAP help me with number 14
attashe74 [19]

Answer:

D. 19

Step-by-step explanation:

because they are parallel bases you can compare

63/57 = 21/x

x = 19

4 0
3 years ago
Read 2 more answers
At a cost restaurant the cost for a hot dog and a soft drink is $2.10. The cost for two hot dogs and three soft drinks is $5.15.
Alja [10]

Answer:

The cost of soft drink is $0.95

Step-by-step explanation:

Let the cost of hot dog be x

Cost of 2 hot dogs = 2x

Let the cost of soft drink be y

Cost of 3 soft drinks = 3y

At a cost restaurant the cost for a hot dog and a soft drink is $2.10.

So, x+y=2.10

The cost for two hot dogs and three soft drinks is $5.15

So, 2x+3y=5.15

Plot the lines on the graph:

x+y=2.10 --Purple line

2x+3y=5.15 --- Black Line

Intersection point =(x,y)=(1.15,0.95)

Hence The cost of soft drink is $0.95

7 0
3 years ago
A trapezoid is a polygon that has exactly one pair of parallel sides.
Anestetic [448]

false                                               <em><u>dsddsfsdfsfdfdsfdsdfsdfsdsfdfsfdsdfsdfsdfsfdsfd</u></em>

4 0
3 years ago
Read 2 more answers
Help asap please!!!!
Alexxx [7]

Answer:

(3, 1)

Step-by-step explanation:

Let the coordinates of B be (x, y)

Since, M is the midpoint of AB.

Therefore, by mid point formula:

1 =  \frac{ - 1 + x}{2},  \:  \:  \: 3 =  \frac{5 + y}{2}  \\  \\ 2 =  - 1 + x, \:  \:  \: 6 = 5 + y \\  \\ 2 + 1 = x, \:  \:  \: 6 - 5 = y \\  \\ 3 = x, \:  \:  \: 1 = y \\  \\ x = 3, \:  \:  \: y = 1 \\  \\ B = (3, \:  \: 1)

3 0
3 years ago
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