Which is a zero of the quadratic function f(x) = 4x2 + 24x + 11?

Mathematics

2 answers:

Alina [70]3 years ago

6 0

I answered this a few minutes ago

Ket [755]3 years ago

3 0

B. x = -5.5 is right hopefully

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nikdorinn [45]

7. E
8.C
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11.B
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I think this is right

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Radius OA of circle O has a slope of 2.5. What is the slope of the line tangent to circle O to point A?

mixer [17]

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rosijanka [135]

Answer:

a) y = 5x

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Step-by-step explanation:

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$\therefore \: y \: \alpha \: \: x \\ \therefore \: y = kx ...(1) \\ plug \: y = 30 \: and \: x = 6 \: in \: eq \: (1)\\ 30 = k \times 6 \\ k = \frac{30}{6} \\ k = 5 \\ plug \: k = 5 \: in \: (1) \\ y = 5x....(2) \: (required \: equation) \\ plug \: x = 12 \: in \: eq \: (2) \\ y = 5 \times 12 \\ \huge \red{ \boxed{y = 60}}$

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2 years ago

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galben [10]

I don’t have a very detailed explanation, however the answer should be “A 90-degree counterclockwise rotation about the origin followed by a translation 1 unit to the left”.

You can clearly see a 90° angle here, it’s obvious. Also, the polygon switch counterclockwise. so, you can see.

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exis [7]

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