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2 years ago

6

What does the equation 7x^2-3y^2-x+2y+4=0 represent

1 answer:

Romashka [77]2 years ago

8 0

Answer:

Circle

Step-by-step explanation:

because a hyper bole is (y-k) 2b2 -(x-h) 2a2=1

ellipse is = (x-h) 2a2 + (y-k) 2b2 = 1

parabola is y= a (x-h) 2+ k

that's why circle is the answer

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The y-intercept should be closer to ten.

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3 years ago

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Solve equation 1/4=x^-1/2

Alex

Answer:

A. {16}

Step-by-step explanation:

1/4 = x^-1/2

We have the exponent rule a^-1 = 1/a^1

Applying the rule, we get

1/4 = 1/x^1/2

x^1/2 = √x

1/4 = 1/√x

Now let's cross multiplying, we get

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Taking square on both sides, we get

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The answer: A. {16}

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Thank you.

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3 years ago

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3 years ago

What is i^15 for imaginary numbers

allochka39001 [22]

Answer:

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Step-by-step explanation:

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3 years ago

1/5x-2/3y=30 when y=15

dolphi86 [110]

Answer:

Step-by-step explanation:

<u>Step 1: Set y to 15 and solve</u>

<u /> $\frac{1}{5}x - \frac{2}{3}*15=30$

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<em>Add 10 to both sides</em>

<em /> $\frac{1}{5}x-10+10=30+10$

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<em>Multiply both sides by 5</em>

<em /> $\frac{1}{5}x*\frac{5}{1}=40*\frac{5}{1}$

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Answer: $x=200$

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