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2 years ago

Four more than -3 times a number is equal to 8 more than -4 times the same number

Mathematics

1 answer:

postnew [5]2 years ago

6 0

Answer:

The equation is 4 + ( − 3 x ) = 8 + ( − 4 x ) and the answer is x=4

Explanation:

Let us call the number

and write our condition as:

4 + ( − 3 x ) = 8 + ( − 4 x )

rearranging: 4 x − 3 x = 8 − 4

x = 4

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3. Find the radius of a cylinder with a volume of 950 cm3<br>and a height of 10 cm.

Vinil7 [7]

Answer:

The radius of the cylinder is approximately 5.5 cm.

Step-by-step explanation:

Given,

Volume of the cylinder = $950\ cm^3$

Height of the cylinder = $10\ cm$

Solution,

Let the radius of the cylinder be r.

Now, according to the formula of volume of cylinder;

$volume = pi\times radius^2\times height$

On substituting the given values, we get;

$950=pi\times r^2\times 10\\950=3.14\times r^2\times10\\r^2=\frac{950}{3.14\times10}\approx30\\r=\sqrt{30}\approx5.5\ cm$

Thus the radius of the cylinder is approximately 5.5 cm.

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2 years ago

I will give Brainiest if you are right

Tpy6a [65]

Answer:

d) $7.82

Step-by-step explanation:

just multiply the 2 numbers

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2 years ago

SOMEONE PLEASE HELP ME I WILL GIVE BRAINLY

adoni [48]

Answer:

answer is B

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Is 8/10 greater than 3/4

makvit [3.9K]

Answer:

yes it is

8/10 = 80%

3/4 = 75%

Step-by-step explanation:

5 0

3 years ago

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The point (Negative StartFraction StartRoot 2 EndRoot Over 2 EndFraction, StartFraction StartRoot 2 EndRoot Over 2 EndFraction)

sveticcg [70]

The values of cosine Ф and cotangent Ф are $\frac{-\sqrt{2} }{2}$ and -1

Step-by-step explanation:

When a terminal side of an angle intersect the unit circle at

point (x , y), then:

The x-coordinate is equal to cosine the angle between the positive part of x-axis and the terminal side
The y-coordinate is equal to sine the angle between the positive part of x-axis and the terminal side
If x and y coordinates are positive, then the angle lies in the 1st quadrant
If x-coordinate is negative and y-coordinate is positive, then the angle lies in the 2nd quadrant
If x and y coordinates are negative, then the angle lies in the 3rd quadrant
If x-coordinate is positive and y-coordinate is negative, then the angle lies in the 4th quadrant

∵ The terminal ray of angle Ф intersects the unit circle at point $(\frac{-\sqrt{2} }{2},\frac{\sqrt{2} }{2})$

- According to the 1st and 2nd notes above

∴ cosФ = x-coordinate of the point

∴ sinФ = y-coordinate of the point

∵ The x-coordinate of the point is negative

∵ They-coordinate of the point is positive

- According the the 4th note above

∴ Angle Ф lies in the 2nd quadrant

∵ x-coordinate = $\frac{-\sqrt{2} }{2}$

∴ cosФ = $\frac{-\sqrt{2} }{2}$

∵ y-coordinate = $\frac{\sqrt{2} }{2}$

∴ sinФ = $\frac{\sqrt{2} }{2}$

- cotФ is the reciprocal of tanФ

∵ tanФ = sinФ ÷ cosФ

∴ cotФ = cosФ ÷ sinФ

∴ cotФ = $\frac{-\sqrt{2} }{2}$ ÷ $\frac{\sqrt{2} }{2}$

∴ cotФ = -1

The values of cosine Ф and cotangent Ф are $\frac{-\sqrt{2} }{2}$ and -1

Learn more:

You can learn more about the trigonometry function in brainly.com/question/4924817

#LearnwithBrainly

4 0

3 years ago

Read 2 more answers