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Advocard [28]
3 years ago
5

I need a answer ASAP​

Mathematics
1 answer:
liberstina [14]3 years ago
6 0
Answer: I think it’s B
Not sure tho

Explanation
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HELPPPPPPPP<br><br> In WXY, y=690 cm, w=440 cm and angle X=163°. Find angle W to the nearest degree
Ede4ka [16]

Answer:

The angle W is approximately 7°.

Step-by-step explanation:

Since angle X is adjacent to sides y and w and opposite to side x, we calculate the length of side x by Law of the Cosine:

x = \sqrt{y^2+w^2-2\cdot y\cdot w \cdot \cos X} (1)

Where:

y, z - Side lengths, in centimeters.

W - Angle, in sexagesimal degrees.

If we know that y = 690\,cm, w = 440\,cm and X = 163^{\circ}, then the length of the side x is:

x = \sqrt{y^2+w^2-2\cdot y\cdot w \cdot \cos X}

x\approx 1118.199\,cm

By Geometry we know that sum of internal angles in a triangle equals 180°. If X is an obtuse, then Y and W are both acute angles. By Law of the Sine we find angle W:

\frac{x}{\sin X}= \frac{w}{\sin W} (2)

\sin W = \left(\frac{w}{x} \right)\cdot \sin X

W = \sin^{-1}\left[\left(\frac{w}{x} \right)\cdot \sin X\right]

If we know that X = 163^{\circ}, w = 440\,cm and x\approx 1118.199\,cm, then the angle W is:

W = \sin^{-1}\left[\left(\frac{w}{x} \right)\cdot \sin X\right]

W \approx 6.606^{\circ}

Hence, the angle W is approximately 7°.

3 0
3 years ago
A baker made 9 cakes. He cut each cake into 6 slices. How many slices of cake did the baker end up with?
Gnoma [55]

Answer:

54 slices

Step-by-step explanation:

You just multiply 9 by 6

8 0
3 years ago
A company is going to make a water tank in the shape of a cylinder. As shown below, the tank will have a height of 4ft and a rad
AleksAgata [21]

First find surface area.

I will skip the exact explanation and just go to it because well its the same concept as the prism.

π*6^2*2+6*2π*4

=72π+48π

=120π

Now we need to take 3.14 for pi getting about

120*3.14=376.8 square foot.

Now the total is 14318.4 dollars, so what's left is simple division.

14318.4/376.8=38

The metal cost 38 dollars per square feet :P

4 0
3 years ago
Scenario: A new Swimming pool is opening up this summer in the Bronx. Students that are 13 - 18 years old can use the pool, gym
MA_775_DIABLO [31]
The answer to your question is 15(12)+40=?
15 being the per month fee, 12 being all 12 months, and 40 being the sign up fee. You can also put 15x12+40=?
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3 years ago
Roberto's science grade is calculated using a weighted average. Quizzes are worth 25%, homework is worth 10%, unit tests are wor
Vitek1552 [10]

Answer: the answer is 93.9

I hope this helps

Step-by-step explanation:

i know it its on k12

7 0
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