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Colt1911 [192]
2 years ago
14

Can anyone solve it plzzzz ​

Mathematics
1 answer:
Vedmedyk [2.9K]2 years ago
7 0

Answer:

1.A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

2.

Solution given:

We have

Sin²\theta-Cos ²\theta=1

Sin²\theta=1+Cos²\theta

Sin\theta=\sqrt{1-Cos²\theta}

3.

4Tan²\theta+4Cot²\theta-3Tan²\theta-3Cot²\theta

4Tan²\theta-3Tan²\theta+4Cot²\theta-3Cot²\theta

Tan²\theta-Cot²\theta

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A builder makes drainpipes that drop 1cm over a horizontal distance of 30cm to prevent clogs. A certain drainpipe needs to cover
Ann [662]

Answer:

700.39cm

Step-by-step explanation:

For a horizontal distance of 30cm, the drop is 1cm, now we need to get the drop for horizontal distance of 700 cm to maintain the same slope

Using the concept of cross multiplication

30cm=1 cm drop

700 cm=x

30x=700

X=700/30=70/3=23 ⅓

Utilizing pythagoras theorem, the length of pipe will be

L=√(23⅓)²+700²

L=700.38878092417 cm

Rounded off, the length is approximately 700.39 cm

8 0
2 years ago
Find the product: (n-5)(n-1)
hjlf

Answer:

6n=5

Step-by-step explanation:

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7 0
3 years ago
Una ciudad tenía 8000 habitantes a final del año 2000. Cada año su población se incrementa en un 0.5 %
Digiron [165]

Answer:

The correct answer is 2030.

Step-by-step explanation:

To start we must analyze the information we have.

We know that a city has 8000 inhabitants and that each year this number increases by 0.5%. That means that <u>each year it has 40 more inhabitants</u>:

(8000 . 0,5) : 100 = 40

Having this information we could do a cross multiplication:

1 year ------- 40 inhabitants

x years ------- 81200

81200 = 40.x

x = 81200 : 40

x = 2030

In this way we can verify that the correct answer is 2030.

4 0
3 years ago
Solve this equation<br><br><br> -3(6 + 6b) + 4 = -104
yulyashka [42]

Answer:

b = 5.

Step-by-step explanation:

-3(6 + 6b) + 4 = -104

-18 - 18b + 4 = -104

-18b = -104 + 18 - 4

-18b = -90

b = -90 / -18

b = 5.

5 0
3 years ago
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maxonik [38]

Answer: y=3x-6

Step-by-step explanation:

4 0
1 year ago
Read 2 more answers
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