Anybody good in math ?

Answer:

-0.20412414523 there you go

Answer:

x^2 - 4/5x - 3/5 = 0

Step-by-step explanation:

5x^2/5 - 4x/5 - 3/5 = 0/5

x^2 - 4/5x - 3/5 = 0

[tex]\\ \sf\longmapsto \dfrac{5x^2-4x-3=0}{5}[/tex]

[tex]\\ \sf\longmapsto \dfrac{5x^2}{5}-\dfrac{4x}{5}-\dfrac{3}{5}=\dfrac{0}{5}[/tex]

[tex]\\ \sf\longmapsto x^2-\dfrac{4}{5}x-\dfrac{3}{5}=0[/tex]

We are done!

Answer:

16

Step-by-step explanation:

Answer:

a.

Step-by-step explanation:

x=4

3(2)=6

6(4)=24

24 is your answer!

Answer:

m<v= 60 degrees

m<x= 100 degrees

Step-by-step explanation:

1) First let's find the measure of angle v. Most of the time if none of the angles are known then it is impossible to find others. However, this specific triangle is an equilateral, which has special rules. We know this is an equilateral because all the sides have the same length. Equilaterals will always have angles with measures of 60 degrees. This is due to the fact that sides and angles are proportionate. Therefore, if all the sides are the same, then the angles must be as well and 180 divided by 3 is 60.

2) Then, we can find the next measurement. This triangle is isosceles. Isosceles triangles have 2 equal sides and angles. The triangle represented above has 2 congruent sides; therefore, the base triangles must also be congruent. So we know that angles Y and W are 40. To find angle X make the expression 180-(40+40). This means that angle x must be 100 degrees.  

Answer:

4

Step-by-step explanation:

Divide each value of y by the corresponding value of x.

20/5 = 4

40/10 = 4

80/20 = 4

200/50 = 4

All quotients are 4.

Answer: 4

Answer:

Step-by-step explanation:

Answer:

88% I am pretty sure

Answer:

15 percent increase

Step-by-step explanation:

just is

Answer:

I am pretty sur it is 3

Step-by-step explanation:

Answer:

3f

Step-by-step explanation:

The expression given is f + f + f.

f + f + f = f × 3

The correct way to write an expression that is being multiplied is to put the number before it with no symbols or spaces in between them:

f + f + f =

f × 3 =

3f

Answer:

start with your fahrenheit then Subtract 32 then divide by 1.8

Step-by-step explanation:

Answer:

proof: answer is 2/13

1 / 6.5 = m

m = 0.153846154

10/65 = m

m = 2/13

2/13 = m

m = 0.153846154

Therefore we could show multiplication proof

m = 10/65  =   m = 2/13

2 x 5 = 10

13 x 5 = 65

Step-by-step explanation:

See attached graph of y = 6.5x+75.5

plotting the graph

1. Mark y intercept at 75.5 as given in the equation

2. find the slope to whole numbers

m =  10 across / 65 across = 6.5 slope

Mapping Pythagoras   10^2 +65^2 = c^2

sqrt 100 + sqrt 4225 = c^2

c^2 = sqrt 4225 = 65.7647322 = 65.8

0.7647322 / 65 = 0.0117651108 = 100th

65 + 0.0117651108 = 65.011765.....

Therefore 10 across / 65.0118  down

or 10 across  / 65 down is another way to graph, as seen on graph.

m = 10/65  =   m = 2/13

2 x 5 = 10

13 x 5 = 65

The speed of the airplane is the ratio of the distance to the time

The initial average speed of the airplane is approximately 110.8 mph

Reason:

Given parameters are;

The distance between Portland Oregon and Seattle Washington = 145 miles

The decrease in travel time when the speed is increase by 20 mph =  minutes

The initial speed of the airplane, v = Required;

Solution;

[tex]t = \dfrac{145}{v}[/tex]

[tex]t - \dfrac{12}{60} = \dfrac{145}{v + 20}[/tex]

Therefore;

[tex]\dfrac{145}{v} - \dfrac{12}{60} = \dfrac{145}{v + 20}[/tex]

Which gives;

[tex]\dfrac{145}{v + 20} - \dfrac{145}{v} + \dfrac{12}{60} = 0[/tex]

Therefore

0.2·v² + 4·v - 2,900 = 0

v ≈ ±110.8 mph

The initial average speed of the airplane, v≈ ± 110.8 mph

Learn more  here:

https://brainly.com/question/11365874

Answer:

Twila Hoffman

Step-by-step explanation:

Answer:

0.264

Step-by-step explanation:

Answer:

3 11/14 is your fraction answer

Step-by-step explanation:

Answer:

the error(s) is from the step 2

Step-by-step explanation:

3r - 12 = 2r - 3  +4r

3r - 4r -2r = 12 - 3

-3r = 9

r = 9 : (-3)

r = -3

--------------------------

the error(s) is from the step 2

Answer:

455 miles and 490 miles.

Step-by-step explanation:

You multiply each rate of speed (miles) by how much time they give.

Answer:

-48

Step-by-step explanation:

−112÷2 1/3 needs to be rewritten as -112 / (7/3), where 7/3 is the improper fraction version of 2 1/3.

Then we have

 -112

---------

  7/3

Recall that division by a fraction is equivalent to multiplication by the reciprocal of the fraction; thus, the above expression becomes

-112 * 3

-----------

     7

This, in turn, can be reduced through division to -16*3, which equals -48.

explain in a different way I can't understand what your saying?

Answer:

12 and 30

Step-by-step explanation:

so they could be 2×2×3 = 12 and 2×3×5 = 30

[tex]\large \boldsymbol {} 1-st \ method \\\\ x^2+2x-35=0 \\\\ x^2+\underbrace{7x-5x}_{2x}-35=0 \\\\( x^2+7x)+(-5x-35) =0 \\\\ x\underline {(x+7)}-5\underline{(x+7)}=0 \\\\ \boxed{(x-5)(x+7)=0 } \\\\ ---------\\\\ 2-nd \ method \\\\ x^2+2x-35=0 \\\\ \begin {cases} x_1+x_2=-2 \\ x_1x_2=-35\end{cases} \Longrightarrow x_1=5 \ ; \ x_2=-7 \\\\\\ x^2+5x-35=(x-x_1)(x-x_2)=\boxed{(x-5)(x+7 )}[/tex]

[tex]\rm \large \boldsymbol {} Answer : \ \boxed{2) \ (x-5)(x+7 )}[/tex]

A right triangle with 45 degree angles mean bot the height and the base are the same, so Y would be 9.

The hypotenuse, which is labeled x is the length of the side multiplied by the square toot of 2.

Answer: X = 9√2

Step-by-step explanation:

sorry answer ia not clear

Answer:

6

Step-by-step explanation:

W = x

L = 2x - 5

P = 2W + 2L

46 = 2(x) + 2(2x - 5)

46 = 2x + 4x - 10

46 = 6x - 10

46 + 10 = 6x

36 = 6x

x = 6

Answer:

Option A is your definite answer.

Step-by-step explanation:

We know that the x coordinate is positive since it is on the positive half of the x-axis. We also can identify that the point A is in the 4th Quarter of the grid, so the y coordinate is negative.

The only choice that proves this reasoning true is option A :)

Hope this helps! Mark me brainliest.

Answer:

the larger number is 452/7 and the smaller number is 1356/28

Answer:

2⅒

Step-by-step explanation:

0.1 = 1/10

2 ⅒

Answer:

2 1/10

Step-by-step explanation:

To convert the decimal 2.1 to a fraction, just follow these steps:

Step 1: Write down the number as a fraction of one:

2.1 = 2.1

     --------    

         1

Step 2: Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,

= (2.1 × 10)

    (1 × 10)              = 21

                             ------

                               10

Now you have to simplify, 2 1/10.

Answer:21.149

Step-by-step explanation:If you add them all together you get 21.149 5x4 =20 so add the decimals last then add 20 when you add .04+.069 then add .4+.64 then add the answers and get 21.149.