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2 years ago

7

2/5x+10=30 a- x=100 b-x=12 c-x=50 d-x=16

2 answers:

garri49 [273]2 years ago

6 0

Answer:

C: x=50

Step-by-step explanation:

Sever21 [200]2 years ago

3 0

Answer:

x=50

Step-by-step explanation:

x in (-oo:+oo)

(2/5)*x+10 = 30 // - 30

(2/5)*x-30+10 = 0

2/5*x-20 = 0 // + 20

2/5*x = 20 // : 2/5

x = 20/2/5

x = 50

x = 50

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Volgvan

Answer:
david finished 24 problems more than ameetha
Step-by-step explanation:
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3 years ago

Jimmy gets a discount of 35% for a pair of sneakers with an original price of $70 he also gets a discount of 25% on a shirt with

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Y = 4x+1 y=x^2 + 2x - 2 A.6,2 B. 2,6 C. -6,2 D. -6,-2

natta225 [31]

Answer:

The solution is (3,13) and (-1,-3). So none of the mentioned options is correct.

Step-by-step explanation:

Given that

$y = 4x + 1 (i)$

$y = x^2 + 2x -2 (ii)$

Now, by susbstituting the value of 'y' from equation i to equation ii, we get

$4x+1=x^2 + 2x -2$

$0=x^2 + 2x -2-4x-1$

$0=x^2 + (2x -4x) +(-2-1)$

$0=x^2 + (-2x) +(-3)$

$0=x^2 -2x -3$

$x^2 -2x -3 = 0 (iii)$

Now by factorization, equation iii can be written as

$x^2 -3x +x -3 = 0$

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By putting the values of x in equation i, we get

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and

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Therefore, the solution is (3,13) and (-1,-3). So none of the mentioned options is correct.

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3 years ago