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2 years ago

Solve: 10 sin^2(x) - 3sin(x) - 1 = 0 let u=sin(x)

Mathematics

2 answers:

serious [3.7K]2 years ago

6 0

Answer:

The answer is (2u-1)(5u+1)=0

Step-by-step explanation:

zysi [14]2 years ago

3 0

Answer:

(2u-1)(5u+1)=0

Step-by-step explanation:

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A problem states: "There are 9 more pencils than pens in a container. There are 25 writing utensils in the container in all. How

Alecsey [184]

2p + 9 = 25 is the correct equation

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2 years ago

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Patrick drove 220 miles to his grandmothers house. The trip took him 4 2/5 hours. What is his average speed in miles per hour.

grigory [225]

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2 years ago

Find the volume of a right circular cone that has a height of 9.1 m and a base with a circumference of 12.1 m. Round your answer

Orlov [11]

Answer:

$V=35.3\ m^3$

Step-by-step explanation:

-Given the cone's height is 9.1m and the Circumference is 12.1

#We use the circumference formula to calculate the radius:

$C=2\pi r\\\\12.1=2\pi r\\\\r=\frac{12.1}{2\pi}=\frac{6.05}{\pi}\ cm$

-The volume of the cone using the radius above can then be calculated as follows:

$V=\pi r^2\frac{h}{3}\\\\=\pi\times(\frac{6.05}{\pi})^2\times \frac{9.1}{3}\\\\\\=35.3\ m^3$

Hence, the cone's volume is $35.3\ m^3$

7 0

2 years ago

Determine which line the point (2, -1) lies on. y = 2x + 1 y = x + 5 y = 2x - 5 y = x - 2

inna [77]

To determine which line the point lies on, you can just plug in one of the numbers into the equations to see if it equals out.

(2, -1) I will use the 2 and plug it in for x in the equation.

y = 2x + 1

y = 2(2) + 1

y = 5 The point does not lie on this line because when x = 2, y = 5 (2, 5)

y = x + 5

y = 2 + 5

y = 7 The point does not lie on this line because when x = 2, y = 7 (2, 7)

y = 2x - 5

y = 2(2) - 5

y = 4 - 5

y = -1 The point does lie on this line because when x = 2, y = -1 (2, -1)

y = x - 2

y = 2 - 2

y = 0 The point does not lie on this line because when x = 2, y = 0 (2, 0)

3 0

2 years ago

Can you answer this for me

madam [21]

Answer: $\frac{11}{16}$

Step-by-step explanation:

11 is the opposite and 16 is the hypotenuse

So, the Sine of ∠A is 11/16

Hope this helps!! :)

7 0

1 year ago

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