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Igoryamba
3 years ago
10

2x + 4y = 1 3x - 5y = 7 solve the simultaneous equations x

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

(x,y)=(3/2, -1/2)

Step-by-step explanation:

2x+4y=1  /*3

3x-5y=7  /*(-2)

6x+12y=3

-6x+10y=-14

...........................

/      22y=-11

      y= -11/22

     y= -1/2

2x+4*(-1/2)=1

2x-2=1

+2     +2

2x=3

x=3/2

so the solutionis (x,y)=(3/2, -1/2)

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Principal: 300
marishachu [46]

Answer:

Step-by-step explanation:

HI there!

From the question;

Principal (p) = 300

Annual rate (r) = 3%

Time (t) = 4 yrs

Now;

Interest (I) = \frac{p*t*r}{100}

             I = \frac{300*4*3}{100}

             I = \frac{3600}{100}

Therefore the interest earned is 36.

Again;

New balance (A) = principal + interest

                            = 300+36

Therefore, the new balance is 336.

Hope it helps!

8 0
3 years ago
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Semmy [17]
0.4 is the answer to this
3 0
3 years ago
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VMariaS [17]

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Step-by-step explanation:

7 0
3 years ago
Find the x-intercepts of the parabola with vertex (1, -9) and y intercept at (0, -6).
MaRussiya [10]
Hello,

The equation of the parabola is
y=k(x-1)²-9
and -6=k(0-1)²-9==>k=3

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What is the area, in square meters, of the shaded part of the rectangle below?
Bezzdna [24]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
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