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serg [7]
3 years ago
6

Mariya is solving the quadratic equation by completing the square.

Mathematics
2 answers:
Mars2501 [29]3 years ago
8 0

Answer: A is 4

Step-by-step explanation:

Using the completing the square method to solve;

4x² - 20x + 3 =0

First take 3 to the right hand side

4x² - 20x = -3

Factor out 4, since 4 is a fctor of 4 and 20

The equation becomes;

4(x² - 5x) = -3

Therefore comparing this equaton with A(x² - 5x) = -3

A = 4

DerKrebs [107]3 years ago
7 0

Answer:

A=4

Step-by-step explanation:

Mariya was solving:

4x2-20x+3=0  

4x2-20x=-3

A(x2-5x)=-3

At this point, we can know that 4*x2=4x2 and 4*5x=20x, son A=4

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The sum of two numbers is 153. if four times the smaller number is subtracted from the larger​ number, the result is 18. find th
sleet_krkn [62]
X = larger number and y = smaller number

x + y = 153....x = 153 - y
x - 4y = 18

153 - y - 4y = 18
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y = -135/-5
y = 27 <=== smaller number

x - 4y = 18
x - 4(27) = 18
x - 108 = 18
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3 years ago
A total of 17,100 seats are still available for the next hockey game. If 62% of the tickets are sold, how many seats are in the
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Answer:

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A system of equations consists of a line s of the equation y = x - 5 that is graphed in orange, and a line t that passes through
Zarrin [17]

ANSWER

x =  4

and

y =   - 1

EXPLANATION

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y=x-5

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5 0
3 years ago
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