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katrin2010 [14]
2 years ago
14

Help me please thank you

Mathematics
1 answer:
ser-zykov [4K]2 years ago
5 0
90 degrees because that is a 30 60 90 triangle
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Solve the quadratic equation x2 + 14x = 51 by completing the square.
tankabanditka [31]

Answer:

B

Step-by-step explanation:

Given

x² + 14x = 51

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(7)x + 49 = 51 + 49 , that is

(x + 7)² = 100 ( take the square root of both sides )

x + 7 = ± \sqrt{100} = ± 10 ( subtract 7 from both sides )

x = - 7 ± 10

Thus

x = - 7 - 10 = - 17

x = - 7 + 10 = 3

4 0
3 years ago
5x+y=2 solve the literal equation for x
Ksenya-84 [330]

Answer:

\sf \: x =  -  \frac{1}{5} y +  \frac{2}{5}

Step-by-step explanation:

5x+y=2 solve the literal{It's called linear }equation for x

5x+y=2

Step 1: Add -y to both sides.

5x+y+−y=2+−y

5x=−y+2

Step 2: Divide both sides by 5.

5x/5=−y+2/5

x=−1/5y+2/5

5 0
1 year ago
Los números 4,3×-3,4× esta en progesion aritmética cuál es el cuarto termino
77julia77 [94]

Answer:  Le preguntaste a tu maestro?

Step-by-step explanation:

5 0
2 years ago
Help me pls math genius
Alecsey [184]

Answer:

x = -3

y = -1

Step-by-step explanation:

in the given question :-

=》x - 4y = 1

=》x = 4y + 1

now replacing the value of x as ( 4y + 1 ) in equation (2)

=》3x + 2y = -11

=》3 (4y + 1) + 2y = -11

=》12y + 3 + 2y = -11

=》14y = -11 - 3

=》y = -14 ÷ 14

=》y = -1

now, putting the value of y in equation (1)

=》x - 4y = 1

=》x - ( 4 × -1 ) = 1

=》x + 4 = 1

=》x = 1 - 4

=》x = -3

6 0
3 years ago
Read 2 more answers
At the beginning of a basketball season, the panthers won 40 games out of 100 games. At this rate, how many games will they win
denis23 [38]

At the rate of winning, they should win 44 games in  normal 110-game season.

7 0
2 years ago
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