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malfutka [58]
3 years ago
6

Find x. 30 20 Need help with this question asap

Mathematics
2 answers:
maria [59]3 years ago
8 0

Answer:

x = 10\sqrt{3}

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos30° = \frac{\sqrt{3} }{2} , then

cos30° = \frac{adjacent}{hypotenuse} = \frac{x}{20} = \frac{\sqrt{3} }{2} ( cross- multiply )

2x = 20\sqrt{3} ( divide both sides by 2 )

x = 10\sqrt{3}

Molodets [167]3 years ago
6 0
Cos=adjacent/hypotenuse
Cos30=x/20
x=cos30 *20

Sorry I don’t have a calculator right now
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A man travels a distance of 75km in 2hours. if he travels for 5 hours find the distance he travels​
Arte-miy333 [17]

Answer:

187. 5

Step-by-step explanation:

If 2h=75km

Then 5h=?(if more, Less divide)

5÷2×75km =187.5km

7 0
2 years ago
Please help asap! :’)
Alina [70]

Answer:

4ba\root(3)(b^(2))

or

4ba\sqrt[3]{b^2}

6 0
3 years ago
Find the lateral area of the pyramid to the nearest whole number.
son4ous [18]

Answer:

The correct answer is first option.  204 m²

Step-by-step explanation:

Formula:-

Lateral surface area of square pyramid = 4 * area  of triangle

<u>To find the slant height of triangle(l)</u>

l = √(6² + 6²) = 6√2

To find the area of triangle

Area = bh/2

b = 12 m

h =  6√2

Area = (12 * 6√2)/2 = 36√2

<u>To find the lateral surface area of Prism</u>

Lateral surface area of square pyramid = 4 * area  of triangle

= 36√2 * 4 = 203.64 ≈ 204 m²

First answer is the correct option

7 0
3 years ago
A small theater had 9 rows of 25 chairs each. An extra 7 chairs have just been brought in. How many chairs are in the
Alchen [17]

Answer:

232

Step-by-step explanation:

9 x 25 = 225   225 + 7 = 232

another way to find it

9 x 20 = 180   9 x 5 = 45   180 + 45 = 225 + 7 = 232

8 0
3 years ago
Help me for this question please​
stealth61 [152]

Answer:70 degrees and 150 degrees

Step-by-step explanation: The angles of a quadrilateral add up to 360. So the sum of the two angles is 360 - (55+ 85) = 220.

After that you can model the sum of the angles with an equation:

7x + 15x = 220

22x = 220

x = 10

then you plug in x for each angle 7(10) = 70 and 15(10) = 150

7 0
3 years ago
Read 2 more answers
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