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2 years ago

HELP!

Mathematics

1 answer:

lidiya [134]2 years ago

3 0

Step-by-step explanation:

So it's really easy if you read it carefully, the only thing you need to do is 63,000 - 6,922 = _____ and that's it hope it helps

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Estimate by rounding the first number to the nearest ten and the second number to the nearest hundred. 19 Х 307 II ? Х ? = ?

AnnyKZ [126]

Answer:

6,200

Step-by-step explanation:

19-20

307-310

310 x 20= 6,200 or 20 x 310= 6,200

8 0

3 years ago

5x=3x+20 can you answer this and show how you got the answer

charle [14.2K]

5x=3x+20
5x-3x=3x-3x+20
2x=20
2x/2=20/2
X=10 Hope this helped!

-Twix

8 0

3 years ago

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There are 3 islands A,B,C. Island B is east of island A, 8 miles away. Island C is northeast of A, 5 miles away and northwest of

Nostrana [21]

Answer:

The bearing needed to navigate from island B to island C is approximately 38.213º.

Step-by-step explanation:

The geometrical diagram representing the statement is introduced below as attachment, and from Trigonometry we determine that bearing needed to navigate from island B to C by the Cosine Law:

$AC^{2} = AB^{2}+BC^{2}-2\cdot AB\cdot BC\cdot \cos \theta$ (1)

Where:

$AC$ - The distance from A to C, measured in miles.

$AB$ - The distance from A to B, measured in miles.

$BC$ - The distance from B to C, measured in miles.

$\theta$ - Bearing from island B to island C, measured in sexagesimal degrees.

Then, we clear the bearing angle within the equation:

$AC^{2}-AB^{2}-BC^{2}=-2\cdot AB\cdot BC\cdot \cos \theta$

$\cos \theta = \frac{BC^{2}+AB^{2}-AC^{2}}{2\cdot AB\cdot BC}$

$\theta = \cos^{-1}\left(\frac{BC^{2}+AB^{2}-AC^{2}}{2\cdot AB\cdot BC} \right)$ (2)

If we know that $BC = 7\,mi$ , $AB = 8\,mi$ , $AC = 5\,mi$ , then the bearing from island B to island C:

$\theta = \cos^{-1}\left[\frac{(7\mi)^{2}+(8\,mi)^{2}-(5\,mi)^{2}}{2\cdot (8\,mi)\cdot (7\,mi)} \right]$

$\theta \approx 38.213^{\circ}$

The bearing needed to navigate from island B to island C is approximately 38.213º.

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3 years ago

label the Venn diagram with number categories. Then classify each of the given numbers by written it in an appropriate place on

DiKsa [7]

I need to see the diagram in order to answer your question.

7 0

3 years ago

What’s the slope of the equation y= -5x +1

slava [35]

Answer:

slope is -5

Step-by-step explanation:

$y=-5x+1$

This equation is in slope-intercept form:

$y=mx+b$

where m is the slope and b is the y-intercept.

In the given equation, the slope is -5 and the y-intercept is 1.

8 0

2 years ago

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