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tamaranim1 [39]
3 years ago
14

Nnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Mathematics
1 answer:
WITCHER [35]3 years ago
7 0

Answer: Ÿëḧ!

Step-by-step explanation:

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Solve by the substitution method<br><br> 2x + 9y=41<br> - 4x + y=13
melisa1 [442]

Answer:

x=-2, y=5. (-2, 5).

Step-by-step explanation:

2x+9y=41

-4x+y=13

---------------

2(2x+9y)=2(41)

-4x+y=13

-----------------------

4x+18y=82

-4x+y=13

------------------

19y=95

y=95/19

y=5

2x+9(5)=41

2x+45=41

2x=41-45

2x=-4

x=-4/2=-2

6 0
3 years ago
The equation of a circle is x2 + y2 + 6x + 4y + 10 = 1. What is this equation written in its standard form?
Over [174]
You need to complete the square in x and in y,

x^{2}  + y^{2} + 6x + 4y + 10 = 1

First, group the x-terms and the y-terms separately.

x^{2} + 6x  + y^{2} + 4y + 10 = 1

Move the 10 to the right side by subtracting 10 from both sides.

x^{2} + 6x  + y^{2} + 4y = -9

Now complete the square in x and in y.
The constant you need to add to complete each square is the square of half of the coefficient of the x or y term. Make sure to add the constants to both sides of the equation.

x^{2} + 6x  + 9 + y^{2} + 4y + 4= -9 + 9 + 4

(x + 3)^{2} + (y + 2)^{2} = 4
8 0
3 years ago
A supermarket stock 210 kg of sugar 55% was sold in a week in a week how many kilograms of sugar were left unsold at the end of
Tems11 [23]
55/100 x 210 = 115.5kg were sold in a week
210-115.5=94.5kg left unsold
3 0
3 years ago
Help me out with this pls (multiple choice)
ElenaW [278]

Answer:

C

Step-by-step explanation:

In a 45-45-90 triangle, two of the sides are congruent because the angles are congruent. Choice C is the only answer in which the sides are congruent.

8 0
3 years ago
Find the sum of the first 8 terms of the geometric series: 32 -16 +8 -4...
IrinaVladis [17]
32 -16 +8 -4 +2 -1 +0.5 -0.25



good luck
7 0
3 years ago
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