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lord [1]
3 years ago
5

Dasfheiufhauehfeafuhahbfhdbvds

Mathematics
1 answer:
Gennadij [26K]3 years ago
4 0
Cjhochixgichochjjjbb
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If u answer this question i will get u famous on brainly
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Step-by-step explanation:

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Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7
Lapatulllka [165]

The first equation is y-2x+1=0

y=2x-1 (Equation 1)

The second equation is 4x^{2}+3y^{2}-2xy=7 (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

4x^{2}+3(2x-1)^{2}-2x(2x-1)=7

4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7

by simplifying the given equation,

12x^{2}-10x-4=0

6x^{2}-5x-2=0

Using discriminant formula,

D=b^{2}-4ac

D=25-4 \times 6 \times -2 = 73

Now the formula for solution 'x' of quadratic equation is given by:

x=\frac{-b+\sqrt{D}}{2a}  and  x=\frac{-b-\sqrt{D}}{2a}

x=\frac{5+\sqrt{73}}{12}  and x=\frac{5-\sqrt{73}}{12}

Hence, these are the required solutions.

8 0
3 years ago
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The elevator at the state capital has a maximum weight capacity of 2000 pounds. If there are 3
Korolek [52]

Answer:

Step-by-step explanation:

Maximum capacity of the elevator = 2000 pounds

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A). Let the possible weights that can be added to the elevator = w pounds

B). Therefore, inequality representing this situation will be,

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C). By solving the given inequality,

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3 years ago
Simplify. 2 - 30 × 5
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First you would do -30x5 which equals -150 then 2-150 equals -148
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