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BabaBlast [244]
3 years ago
13

-5x+4y=3 x=2y-15 Solve for y and x

Mathematics
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

<em><u>x=9, y=12</u></em>

Step-by-step explanation:

-5x+4y=3 --------A

x=2y-15----------B

Putting the value of x from B in A

-5(2y-15) +4y=3

-10y+75+4y=3

-6y=3-72

-6y=-72

y=72/6= 12

Putting the value of y =12 in B

x= 2(12)-15

x= 24-15

x=9

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x = - 1/45.

Step-by-step explanation:

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Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 2323 Pennies 55 Dimes 2020 Nic
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Answer:

The answer is "0.081"

Step-by-step explanation:

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7 0
3 years ago
What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?<br><br> –4<br> 8<br> 12<br> 24
monitta

Answer:

8

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0 = –x^2 + 4x – 2

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ax^2 +bx +c

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Please answer this question
elena-14-01-66 [18.8K]
The area of the base (six triangles with a base 15m and a height 7.5√3m):

A_B=6\cdot\dfrac{1}{2}\cdot15\cdot7.5\sqrt3\approx585\ m^2

The area of side walls (six triangles with a base 15m and a height 12m)

A_W=6\cdot\dfrac{1}{2}\cdot15\cdot12=540\ m^2

The surface area:

A_B+A_W=585+540=1,125\ m^2



8 0
3 years ago
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