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Sveta_85 [38]
3 years ago
9

What's the value of x and y when 4x+y=210 and 3x+2y=195?

Mathematics
2 answers:
noname [10]3 years ago
8 0
After substitution method, I got x=45 and y=30
adell [148]3 years ago
7 0
You already hve the answer, but you do this by turning the equation into standard form. Since we are isolating y for each linear equation, we must first subtract the 4x and 3x on both sides. This should come out to y=-4x+219 and 2y=-3x+195. Since we have our first equation in standard form, all we have go do is divide 2 on both sides frome the second equation. Then you can solve by substitution (y=y)
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Describe and correct the error in determining wheather (8,11) is a solution of y-x=3
Burka [1]

(8, 11) is the correct solution. x = 8, y = 11

Plug it in:

11-8=3

That's correct.

7 0
2 years ago
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If 1/p+q=r and p≠-q, what is p in terms of r and q?
bekas [8.4K]

p = (1/r) - q

In order to find this, follow the order of operations to get the answer.

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5 0
3 years ago
Can you help me with explanation will give brainiest
Ipatiy [6.2K]

Answer:

Area of rectangular garden = lxb = 10*5

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when area increases by six times

new area = 50*6 = 300 sq inches

now,

let x be increasement in both  length and width

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50 + 5x + 10x + x² = 300

x² + 15x - 250 = 0

x²+ 25x-10x -250 = 0

x(x+25) - 10 (x+25) = 0

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either x + 25 =0

x = -25 length can be negative

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x = 10

so 10 inches is increase on both side

Step-by-step explanation:

6 0
2 years ago
Is 0.06 greater than 0.0582
Art [367]

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Best of Luck!

5 0
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masha68 [24]

Answer: Um It’s C?

Step-by-step explanation:

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