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3 years ago

The students in a class are randomly drawing card numbered through

Mathematics

1 answer:

AlladinOne [14]3 years ago

4 0

Answer:

it's 1/28, every draw has equal peobabiloty

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Which complex number has a distance of 17 from the origin on the complex plane?

Virty [35]

Answer:

None of the options are correct.

Step-by-step explanation:

Let the complex number is a + ib

Given distance from origin = 17 units

Now, by distance formula distance of a point from the origin =

$17 = \sqrt{(x)^{2} + (y)^{2} }$

1) Check for 2 + 15 i

here, $\sqrt{15^2 + 2^2} = \sqrt{225 + 4} = \sqrt{229}$ ≠ 17

2) Check for 17 + i

here, $\sqrt{17^2 + 1^2} = \sqrt{289 + 1} = \sqrt{290}$ ≠ 17

3) Check for 20 - 3 i

here, $\sqrt{20^2 + (-3)^2} = \sqrt{400 + 9} = \sqrt{409}$ ≠ 17

4) Check for 4 - i

here, $\sqrt{4^2 + (-1)^2} = \sqrt{16 + 1} = \sqrt{17}$ ≠ 17

Hence, none of the options are correct.

4 0

4 years ago

Write the quadratic equation in general form. What is the value of b2 - 4ac? 1 = 2x2 + 5x?

lidiya [134]

I hope this helps you

8 0

3 years ago

What number is 10% of 80

zhuklara [117]

The answer is 8

Hope that helped ^^

5 0

3 years ago

Read 2 more answers

Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.25 cm. If the nozzle has an opening of diameter 1

Gwar [14]

Answer:

4.67 m/s

Step-by-step explanation:

The equation of continuity for an incompressible fluid is A1v1 = A2v2 where A represents area and v is velocity of the fluid.

If we let the values with subscript 1 be those inside the hose and 2 be those at the nozzle then the question can be solved this way

$A_{1} v_{1} = A_{2} v_{2} \\\\(\pi *0.01125^{2} )*v_{1} = (\pi *0.00065^{2} )*14\\\\v_{1} = 4.67 m/s$

6 0

3 years ago

Use the parabola tool to graph the quadric function

ch4aika [34]

I can't help you with your graphing tool. With my graphing tool, the graph looks like this.

The vertex is at (-4, -1), and it goes through the point (-3, 1).

5 0

3 years ago