3 years ago

Solve for r. p = 4r 3t

Mathematics

1 answer:

lara31 [8.8K]3 years ago

3 0

P = 4r + 3t
4r = p - 3t
r = (p - 3t)/4

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Here you go hope it helps

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Determine whether the lines l1 and l2 given by the vector equations are parallel, perpendicular, or neither. L1: r(t) = (-4 + 3t

Vilka [71]

Over which interval(s) is the function decreasing?

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3 years ago

Find the sum of the squares of the roots of 3x^2 + 4x + 12 = 0

Contact [7]

Answer:

-56/9

Step-by-step explanation:

Let p and q be the roots of the equation.

So, here's how we're gonna work it out:

${p}^{2} + {q}^{2} = \\ {p}^{2} + {q}^{2} +2 pq - 2pq = \\ ( {p}^{2} +2pq + {q}^{2}) - 2pq = \\ {(p + q)}^{2} - 2pq$

Vieta's formulas give us the sum and the product of the roots of a quadratic equation. Using them we obtain:

p + q = -b / a = - 4 / 3
p × q = c / a = 12 / 3 = 4

${(p + q)}^{2} - 2pq = \\ {( - \frac{ 4}{3} )}^{2} - 2 \times 4 = \frac{16}{9 } - 8 = \\ \frac{16 - 72}{9} = - \frac{56}{9}$

4 0

3 years ago

I need help with my final it’s my final grade

hjlf

The answer to the problem is A

8 0

3 years ago

Please help it’s asking the perimeter to the nearest tenth

valkas [14]

Pythagoras theoram? use it here!

That is,

H² = B² + P²

H² = 15² + 4²

H² = 225 + 16

H = √241

H = 15.5

You should opt for 15.5

P.S: Best of luck for your test! ;))

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3 years ago