n + 17.22 = 21 what is the answer

Answer:

for 0.4x – 3y = 7

Step-by-step explanation:

The answer is Changes made to your input should not affect the solution:

(1): "0.4" was replaced by "(4/10)".

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    (4/10)*x-3*y-(7)=0

STEP

1

:

           2

Simplify   —

           5

Equation at the end of step

1

:

   2                

 ((— • x) -  3y) -  7  = 0

   5                

STEP

2

:

Rewriting the whole as an Equivalent Fraction

2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  5  as the denominator :

         3y     3y • 5

   3y =  ——  =  ——————

         1        5  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

2x - (3y • 5)     2x - 15y

—————————————  =  ————————

      5              5    

Equation at the end of step

2

:

 (2x - 15y)    

 —————————— -  7  = 0

     5        

STEP

3

:

Rewriting the whole as an Equivalent Fraction :

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  5  as the denominator :

        7     7 • 5

   7 =  —  =  —————

        1       5  

Adding fractions that have a common denominator :

3.2       Adding up the two equivalent fractions

(2x-15y) - (7 • 5)     2x - 15y - 35

——————————————————  =  —————————————

        5                    5      

Equation at the end of step

3

:

 2x - 15y - 35

 —————————————  = 0

       5      

STEP

4

:

When a fraction equals zero :

4.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 2x-15y-35

 ————————— • 5 = 0 • 5

     5    

Now, on the left hand side, the  5  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  2x-15y-35  = 0

Equation of a Straight Line

4.2     Solve   2x-15y-35  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  2x-15y-35  = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 7/-3 so this line "cuts" the y axis at y=-2.33333

 y-intercept = 35/-15 = 7/-3  = -2.33333

Calculate the X-Intercept :

When y = 0 the value of x is 35/2 Our line therefore "cuts" the x axis at x=17.50000

 x-intercept = 35/2  = 17.50000

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -2.333 and for x=2.000, the value of y is -2.067. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -2.067 - (-2.333) = 0.267 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  0.267/2.000 =  0.133

Geometric figure: Straight Line

 Slope = 0.267/2.000 = 0.133

 x-intercept = 35/2 = 17.50000

 y-intercept = 35/-15 = 7/-3 = -2.33333

Answer:

Good for her ig

Step-by-step explanation:

Answer:

0.25

Step-by-step explanation:

Answer:

A function is an equation in math that connects an input to a given output.

Step-by-step explanation:

Answer:

width of the scale 10.8 inches

Step-by-step explanation:

Answer:

161

Step-by-step explanation:

cancel 3 and 27 that gives u 7.

multiply 23 and 7 that gives u 161

Step-by-step explanation:

hope it was helpful....

Answer:

if ur asking which is a better deal, then it's the 8 lb ham for 9.60

Step-by-step explanation:

Answer:

8lb ham for $9.60

Step-by-step explanation:

Answer:

10.98 (approximately)

if you wan the exact answer, type into the google search bar:

"sqrt 119"

Step-by-step explanation:

in a right triangle, the longest leg is called the hypotenuse. To find the missing side, you need to use the Pythagorean theorem.

"a^2+b^2=c^2"

c = the hypotenuse

a and be are the other legs.

plug in the numbers.

5^2+b^2 = 12^2

25 + b^2 = 144

b^2 = 119

b = 10.98 (approximately)

Answer:

THe interior angles of any triangle equal 180

THerefore 48+87+v=180

48+87+v=180

87+v=132

v=45

Step-by-step explanation:

Answer:

It would take the person 10 weeks to pay the friend back

Step-by-step explanation:

Don't know is this was the question :l

Answer:

y=-10x+100

Step-by-step explanation:

Answer:

The ladder is 8 feet high up on the wall.

Step-by-step explanation:

Let the height up of the ladder on the wall be represented by h. The ladder leaning on the wall, wall and distance of the foot of ladder from the wall form a right angled triangle.

So, applying the Pythagoras theorem;

[tex]/hyp/^{2}[/tex] = [tex]/adj 1/^{2}[/tex] + [tex]/adj 2/^{2}[/tex]

[tex]/10/^{2}[/tex] = [tex]/6/^{2}[/tex] + [tex]/h/^{2}[/tex]

100 = 36 + [tex]h^{2}[/tex]

so that,

[tex]h^{2}[/tex] = 100 - 36

   = 64

⇒ h = [tex]\sqrt{64}[/tex]

      = 8 feet

The ladder is 8 feet high up on the wall.

Answer:increasing

Step-by-step explanation:

Answer:

Increased I did the Quiz Pratice: Adding and Subtrating Integers- Quiz-Level G

Step-by-step explanation: LOL I knew the lesson

Answer:

3.2 cm on map represents 80 kilometers of actual distance.

Step-by-step explanation:

It is given that the scale is:

1 cm = 25 km

And we have to find the distance that will be represented by 3.2 centimeters of length on the map.

Let x be the number of kilometers represented by 3.2 cm

[tex]\frac{1}{25} = \frac{3.2}{x}\\x = 3.2 * 25\\x = 80[/tex]

Hence,

3.2 cm on map represents 80 kilometers of actual distance.

Answer:

x>-99/4

Step-by-step explanation:

Answer:

To find the number of hectometers in 87 centimeters, move the decimal point 4 units to the left.

Mark me brainliest if I am right...PLEASE

Answer:To find the number of hectometers in 87 centimeters, move the decimal point 4 units to the left.

Step-by-step explanation:

Answer: 37.5

Step-by-step explanation To get the wander to this question, you should divide 15 by 8 to get the decimal number. Then, after you want to multiply that decimal 20 times. I hope this helped! And it would mean so much to me if I could have brainliest.

Answer:

a lot

Step-by-step explanation:

2666

Answer:

a. -12

General Formulas and Concepts:

Pre-Algebra

Step-by-step explanation:

Step 1: Define

h(r) = (2/3)r - 6

h(-9) is r = -9

Step 2: Evaluate

And we have our answer!

Answer:

a is correct

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

easy

Answer:

s  =  7.811  ¯  6

Step-by-step explanation:

x =  2  + 4  +  5  +  6  +  7  +  9  +  10 /7

¯ x = 43 /7

s = ( 2 − 6.1 ) 2 + ( 4 − 6.1 ) 2 + ( 5 − 6.1 ) 2 + ( 6 − 6.1 ) 2 + (7 − 6.1 ) 2 + ( 9 − 6.1 ) 2 + ( 10 − 6.1 ) 2/ 7 − 1

Answer:

1. You can look at side measurements. Angle measurements will not change so do not use them as reference. For example, if a rectangle has one side as 7 and the other 3, then the scale factor of a rectangle with a side of 21 and 9 would be 3, because 21÷7 is 3 or 9÷3 is 3.

2. You can determine a polygon is similar by having the same angles and/or similar sides.

3. All you need is one side and one angle if the angle and side are opposit each other, so a and A or b and B or c and C. If this is not represented in a problem then you can use 2 angles and 1 side or 1 angle and 2 sides to figure out if they are similar.

Answer:

more free points thanks bro

Step-by-step explanation:

ya yeet

Answer:

sin

Step-by-step explanation:

Answer:

(8,-3)

Step-by-step explanation:

this is the point where the 2 lines intersect

Answer: 24

Step-by-step explanation: beacufg

Answer:

That graph in the picture is not linear

Step-by-step explanation:

The graph does not go up or go down the same each unit

Answer:

not linear

Step-by-step explanation:

if it was linear there would be a diagonal straight line.

linear indicates there is a consistent ratio of x values and y values.

Answer:

auto liability coverage, uninsured and underinsured motorist coverage, comprehensive coverage, collision coverage, medical payments coverage and personal injury protection

Step-by-step explanation: