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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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What is the equation of the line that has a slope of 4 and passes through the point (3, -10?
irga5000 [103]
Hello 
the equation is y = ax+b
a the slop    a = 4
y = 4x+b
the line <span>passes through (3, -10) :  -10 = 6(3)+b
b = -28
</span>the equation is y = 6x-28
3 0
3 years ago
Dedi had a combination lock.To open the lock he started at 37.He made 3 half turns clockwise and 3 quarter turns anticlockwise
Lerok [7]
Turning clockwise means the number increase, and counterclockwise means the number decreases

Therefore your answer is 37 + (3*1/2)-(3*1/4)

= 37.75

Hope this helped :)
5 0
2 years ago
The following table shows the monthly charges for subscribing to the local newspaper.
Ostrovityanka [42]
D. independent -- Number of Months
dependent -- Total Cost

The dependent Variable depends on the independent variable so, as the number of months change, the total cost changes.
4 0
3 years ago
Can u plz help me?...
Westkost [7]

Answer:

a  4 1/5

b  7 7/24

Step-by-step explanation:

a  7/9 * 5 2/5

Change the mixed number to an improper fraction

7/9 * (5*5+2)/5

7/9 * 27/5

Rewrite

7/5 * 27/9

7/5 * 3

21/5

Change this back to a mixed number

5 goes into 21 4 times  (4*5 = 20 ) with 1 left over

4 1/5


b  1 3/4 * 4 1/6

Change to improper fractions

(4*1+3)/4  * (6*4+1)/6

7/4 * 25/6

175/24

Change back to a mixed number

24 goes into 175 7 times  (7*24 =168 ) with 7 left over

7 7/24

3 0
3 years ago
Find the solution to the following system using substitution. y = - 4 + 9 y = 3x - 5
lbvjy [14]

Answer:

1/2, 11/6

Step-by-step explanation:

y=-4+9y

9y-y=4

8y=4

y=1/2

3x-5=1/2

3x=5+1/2=11/2

x=11/6

6 0
2 years ago
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