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2 years ago

Use the law of cosines to find m

Mathematics

1 answer:

faltersainse [42]2 years ago

6 0

Cos ø = A/H = 17/20

On your calculator:

Put in the fraction (17 divided by 20)
Press =
Press 2nd
Press cos

You should get 31.8 when you round it

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5(x+3)=2x+3 what is x?

kvasek [131]

Answer:

操你媽，你怕我還是不告訴我。我希望你沒事。到今天為止。

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2 years ago

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Find the area of following rhombuses. Round your answers to the nearest tenth if necessary.

polet [3.4K]

Answer:

$Area =55.4ft^2$

Step-by-step explanation:

Given

The attached rhombus

Required

The area

First, calculate the length of half the vertical diagonal (x).

Length x is represented as the adjacent to 60 degrees

So, we have:

$\tan(60) = \frac{4\sqrt 3}{x}$

Solve for x

$x = \frac{4\sqrt 3}{\tan(60)}$

$\tan(60) = \sqrt 3$

So:

$x = \frac{4\sqrt 3}{\sqrt 3}$

$x = 4$

At this point, we have established that the rhombus is made up 4 triangles of the following dimensions

$Base = 4\sqrt 3$

$Height = 4$

So, the area of the rhombus is 4 times the area of 1 triangle

$Area = 4 * \frac{1}{2} * Base * Height$

$Area = 4 * \frac{1}{2} * 4\sqrt 3 * 4$

$Area =2 * 4\sqrt 3 * 4$

$Area =55.4ft^2$

7 0

3 years ago

Question 9 of 15 (1 point)

mote1985 [20]

The number is -9

Step-by-step explanation:

Let x be the number then according to given statement

$4x+10 = x-17$

Subtracting 10 from both sides

$4x+10-10 = x-17-10\\4x = x-27$

Subtracting x from both sides

$4x-x = x-x-27\\3x = -27$

Dividing both sides by 3

$\frac{3x}{3} = \frac{-27}{3}\\ x = -9$

Verification:

$4(-9)+10 = -9-17\\-36+10=-26\\-26=-26$

The number is -9

Keywords: Linear equation, variables

Learn more about linear equation at:

#learnwithBrainly

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2 years ago

a classroom has a length of 20 feet and a width of 30 feet. The headmaster decided that tiles will look good in that class. if e

iogann1982 [59]

The area of the room must equal the sum of the areas of the tiles...

20*30=n(2*3)

600=6n

n=100

So 100 tiles are needed.

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2 years ago

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1 2 3 4 5 6 7 8 9 10 In what type of economy does the government try to control all factors of production? A. traditional B. com

kondaur [170]

Answer: C. market

Step-by-step explanation:

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2 years ago