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3 years ago

Solve 2sinx^2-5sinx-3=0

Mathematics

1 answer:

vodomira [7]3 years ago

7 0

Answer:

Step-by-step explanation:

The answer my Math 4 teacher gave me. :) work with it

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A cylindrical well is 15 meters deep and has a diameter of 1.6 meters. Approximately how many cubic meters of soil were dug out

Lisa [10]

We can dig out the soil from the well equal to volume of well.

Height(h) of well is = 15 meters.

Diameter = 1.6 meters.

So radius(r) = $\frac{1.6}{2} = 0.8$ meter.

As well in cylindrical shapes.

So volume of well = $\pi r^2h$
                               = $\pi * (0.8)^2 * 15$
                                $= 9.6 * \pi$
In general $\pi = 3.14$

So volume of well is = $9.6 * 3.14$
   $= 30.144$ cubic meter.

So we can dig out 30.144 cubic meter soil from well.

5 0

3 years ago

Help pleassee and thank you .

vampirchik [111]

Answer:

please and thank you are the magic words

6 0

4 years ago

Eduardo thinks of a number between 1 and 20 that has exactly 5 factors what number is the thinking of?

babunello [35]

Eduardo is thinking of the number ' 16 '.

The factors of 16 are 1, 2, 4, 8, and 16.

Here's a cool little factoid:

Almost every number has an even number of factors. The
only ones that have an odd number are perfect squares.
(They still have an even number of factors, but two of the factors
are the same number, so the list looks like an odd number long.)

3 0

3 years ago

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A 9-pound bag of sugar is being split into containers that hold 2/3 of a pound. How many containers will the 9-pound bag create?

Lemur [1.5K]

Answer: below

Step-by-step explanation: You simply need to divide the total amount of sugar (9 lbs) by the amount that you put into each bag (2/3 lb). This expression looks kind of ugly in this form, so let's instead multiply 9 by the reciprocal of 2/3, which in this case is 3/2. The reciprocal of any number is just 1 divided by the number.

3 0

3 years ago

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HELP NOW!! PLEASE!! I NEED HELP!!!!

timama [110]

Answer:

-2

Step-by-step explanation:

14/7 = 2

So,

-14/7 = -2

Check:

-2 x 7 = -14

7 0

3 years ago

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