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goldfiish [28.3K]
3 years ago
10

What is 2.1851 rounded to the nearest ten

Mathematics
2 answers:
Natalija [7]3 years ago
8 0

Answer:

2.2 is the answer you are looking for :)

Mandarinka [93]3 years ago
6 0

Answer:2.2

Step-by-step explanation:

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A bird is flying 50 feet above the ground. If -20 describes a change in the bird's height, which of the following is true?
inessss [21]

Answer:

The bird is 20 ft closer to the ground

Step-by-step explanation:

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Andrej [43]

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Step-by-step explanation:

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3 years ago
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Sonja [21]
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4 0
3 years ago
Change each standard form equation to slope-intercept form!
goldenfox [79]
Hello! 

Slope-intercept form is this one: y=a*x+b where a is the slope and b the intercept. 

So, for transforming these equations to Slope-Intercept you'll need to rearrange the equations by adding or subtracting the same amounts on both sides of the equation (as a rule of thumb, sums are transformed into subtractions and multiplications into divisions).

<span>1) 3x + y = 12

You should notice that Y and X are on the same side of the equation, so by subtracting 3x on both sides of the equation you'll cancel X on the left side:

</span>3x+y-3x=12-3x \\ y=12-3x
<span>
To finish, we rearrange this equation to the form y=a*x+b 

</span>y=-3x+12
<span>
So, the slope is -3 and the intercept is 12

2) 8=y+5x

</span>You should notice that Y and X are on the same side of the equation, so by subtracting 5x on both sides of the equation you'll cancel X on the right side:

8-5x=y+5x-5x \\ 8-5x=y

To finish, we rearrange this equation to the form y=a*x+b 

y=-5x+8

So, the slope is -5 and the intercept is 8

3) 6x + 3y = -9

You should notice that Y and X are on the same side of the equation, so by subtracting 6x on both sides of the equation you'll cancel X on the left side:

6x+3y-6x=-9-6x \\ 3y=-9-6x

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by 3 to cancel this number on the left side.

\frac{3}{3}y= \frac{9}{3}- \frac{6}{3}x  \\ y=3-2x

To finish, we rearrange this equation to the form y=a*x+b 

y=-2x+3

So, the slope is -2 and the intercept is 3

4) 
x - 5y = 55

You should notice that Y and X are on the same side of the equation, so by subtracting x on both sides of the equation you'll cancel X on the left side:

x-5y-x=-55-x \\ -5y=-55-x

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by -5 to cancel this number on the left side.

\frac{-5}{-5}y= \frac{55}{-5}- \frac{1}{-5}x \\ y=-11+ \frac{1}{5}x

To finish, we rearrange this equation to the form y=a*x+b 

y=\frac{1}{5}x-11


So, the slope is 1/5 and the intercept is -11

5) -4x-y=-2
You should notice that Y and X are on the same side of the equation, so by adding 4x on both sides of the equation you'll cancel X on the left side:

-4x-y+4x=-2+4x \\ -y=2+4x 

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by -1 to cancel this number on the left side.

\frac{-1}{-1} y= \frac{-2}{-1}+ \frac{4}{-1}x \\ y=2-4x

To finish, we rearrange this equation to the form y=a*x+b 

y=-4x+2

So, the slope is -4 and the intercept is 2

6) -16 = -4x + 2y

You should notice that Y and X are on the same side of the equation, so by adding 4x on both sides of the equation you'll cancel X on the right side:

-16+4x=-4x+2y+4x \\ -16+4x=2y

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by 2 to cancel this number on the right side.

\frac{-16}{2}+ \frac{4}{2} x= \frac{2}{2}y \\ -8+2x=y

To finish, we rearrange this equation to the form y=a*x+b 

y=2x-8

So, the slope is 2 and the intercept is -8

I hope that this helps. Have a nice day!
8 0
4 years ago
X + y =125<br> 5x + 8y = 775
muminat

Answer:

x=75, y = 50

Step-by-step explanation:

Solve the following system:

{x + y = 125 | (equation 1)

5 x + 8 y = 775 | (equation 2)

Swap equation 1 with equation 2:

{5 x + 8 y = 775 | (equation 1)

x + y = 125 | (equation 2)

Subtract 1/5 × (equation 1) from equation 2:

{5 x + 8 y = 775 | (equation 1)

0 x - (3 y)/5 = -30 | (equation 2)

Multiply equation 2 by -5/3:

{5 x + 8 y = 775 | (equation 1)

0 x+y = 50 | (equation 2)

Subtract 8 × (equation 2) from equation 1:

{5 x+0 y = 375 | (equation 1)

0 x+y = 50 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 75 | (equation 1)

0 x+y = 50 | (equation 2)

Collect results:

Answer:  {x = 75 , y = 50

8 0
3 years ago
Read 2 more answers
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