what percent of 40 is 20???

Answer:

x= 5/3

Step-by-step explanation:

Answer: 24

Step-by-step explanation:

Answer:

ŷ = -0.18363X + 19.71681

-0.9685

Step-by-step explanation:

Given the data:

Mileage, x: 22 14 18 30 8 24

Price, y: 16 17 17 14 18 15

Using the online regression calculator :

The regression equation obtained is :

ŷ = -0.18363X + 19.71681

Where ;

y = predicted variable

- 0.18363 = slope or gradient

X = predictor variable

19.71681 = intercept

The correlation Coefficient R = -0.9685

This signifies a strong negative relationship between the x and y variable.

The line of best fit has an equation of:

y = -0.1875x + 19.625

A linear equation is given by:

y = mx + b;

where y, x are variables, m is the slope of the line and b is the y intercept.

Let x represent the mileages (in thousands of miles) and y the selling prices(in thousands of dollars) of used automobiles.

Plotting the points using geogebra graphing calculator, the line of best fit has an equation of:

y = -0.1875x + 19.625

Therefore the slope is -0.1875 and the y intercept is 19.625

Find out more at: https://brainly.com/question/11324911

Answer:

integer

Step-by-step explanation:

sorryStep-by-step explanation:

Answer:

I think 15

Step-by-step explanation:

Answer:

3.077 km/hr (though your question did not specify where to round to)

Step-by-step explanation:

10km/ 3.25 hr

Answer:

n<22

Step-by-step explanation: That is the best i can do it

Answer:

Keiko 12 +  Juan 51 + Tony 17 = $80

Step-by-step explanation:

K + J + T = 80

K=T-5

J=3T

T=T

T-5 + 3T + T = 80

5T -5 = 80  -->  5T = 85 --> T = 17

now that u know T=17, substitute the value of T to find K and J

K=(17)-5 = $12

J=3(17) = $51

T= $17

Answer:

The compounded annually account will earn more interest over 10 years

Step-by-step explanation:

The rule of the simple interest is I = Prt, where

The rule of the compounded interest is A = P[tex](1+\frac{r}{n})^{nt}[/tex], where

The interest I = A - P

∵ Each account start with $200

∴ P = 200

∵ They have an interest rate of 5%

∴ r = 5% = 5 ÷ 100 = 0.05

∵ One account earns simple interest and the other is compounded  

   annually

∴ n = 1 ⇒ compounded annually

∵ The time is 10 years

∴ t = 10

→ Substitute these values in the two rules above

∵ I = 200(0.05)(10)

∴ I = 100

∴ The simple interest = $100

∵ I = A - P

∵ A = 200[tex](1+\frac{0.05}{1})^{1(10)}[/tex]

∴ A = 325.7789254

∵ I = 325.7789254 - 200

∴ I = 125.7789254

∴ The compounded interest = $125.7789254

∵ The simple interest is $100

∵ The compounded interest is $125.7789254

∵ $125.7789254 > $100

∴ The compounded annually account will earn more interest

   over 10 years

Answer:

Step-by-step explanation:

(1+4i)-(-16+9i)

1+4i+16-9i

17-5i

What's the question???

Answer:

Yes, I do for my Spanish class!

Do you have any questions about it?

Answer:

Step-by-step explanation:

f(x) = a(x - h)² + k           - vertex form of the equation of the parabola with vertex (h, k)

so the equation of parabola with the vertex (4, -4) is

f(x) = a(x - 4)² - 4  

passes through the point (2, 12)  means if x=2 then f(x)=12

12 = a(2 - 4)² - 4  

12 +4 = a(-2)² - 4 +4

16 = 4a

a = 4

Therefore the equation (in vertex form) of parabla is:

                                  f(x) = 4(x - 4)² - 4  

Answer:

x ≤ -9

Step-by-step explanation:

x-3 ≤ -12

x ≤ -12+3 (Isolate x)  

x ≤ -9

Answer:

26 because 30-4=26

Step-by-step explanation:

Given:

The equation of line is

[tex]y=\dfrac{1}{3}x-1[/tex]

To find:

The equation of line in slope-intercept form parallel to given line and passes through (6,10).

Solution:

The slope intercept form of a line is

[tex]y=mx+b[/tex]       ...(i)

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

The equation of given line is

[tex]y=\dfrac{1}{3}x-1[/tex]          ...(ii)

On comparing (i) and (ii), we get

[tex]m=\dfrac{1}{3}[/tex]

Slope of given line is [tex]\dfrac{1}{3}[/tex].

We know that slope of parallel lines are same. So, the slope of required line is [tex]\dfrac{1}{3}[/tex].

Since slope of required line is [tex]\dfrac{1}{3}[/tex] and it passes through (6,10), therefore the equation of line is

[tex]y-y_1=m(x-x_1)[/tex]

[tex]y-10=\dfrac{1}{3}(x-6)[/tex]

[tex]y-10=\dfrac{1}{3}(x)-\dfrac{1}{3}(6)[/tex]

[tex]y-10=\dfrac{1}{3}(x)-2[/tex]

Add 10 on both sides.

[tex]y-10+10=\dfrac{1}{3}(x)-2+10[/tex]

[tex]y=\dfrac{1}{3}(x)+8[/tex]

Therefore, the required equation of line is [tex]y=\dfrac{1}{3}(x)+8[/tex].

Answer:

11.1803399

Step-by-step explanation:

By Pythagoras Theorem

[tex] \sqrt{hight {}^{2} + base {}^{2} } [/tex]

[tex] \sqrt{100 + 25} [/tex]

[tex] \sqrt{125} [/tex]

[tex] = = > 11.1803399[/tex]

Answer By,

Zeeshan Khan

Answer:

i think 89

Step-by-step explanation:

Answer:

m∠6 = 117º

m∠7 = 63º

Step-by-step explanation:

m∠3 = m∠7 = 63º(corresponding angles)

180º - m∠3 = m∠6 = 117º (same side interior angles are supplementary)

or

180º-m∠7 = m∠6 = 117º (linear pair)

Step-by-step explanation:

a....................................

Answer:

6.45 × 10³

Step-by-step explanation:

4.5 × 10² + 6 × 10³ = 0.45 × 10³ + 6 × 10³ = (0.45 + 6) × 10³ = 6.45 × 10³

Answer:

450 and 6000

Step-by-step explanation:

4.5 × 10²

4.5 × 100

450

6 × 10³

6 × 1000

6000

Answer:

-3x

Step-by-step explanation:

Answer:

Step-by-step explanation:

If we multiply any negative number in this case -3 times a POSITIVE we will always get a negative. So the positive we can put as x and multiply -3 times x = -3x.

Hope this helps :D

Answer:

Step-by-step explanation:

Answer:

1 over negative 6

Step-by-step explanation:

okay so first you said you had negative 1 over 6, this can be written as -1/6.

You then had -6/1 twice and finally you had 1 over negative 6, which can also be written as -1/6.

Ask questions if you are confused

Answer:

1 over negative 6

Step-by-step explanation:

okay so first you said you had negative 1 over 6, this can be written as -1/6.

You then had -6/1 twice and finally you had 1 over negative 6, which can also be written as -1/6.

Answer:

I dont know if anyone can answer kinda doesn't make sense

Step-by-step explanation:

Hey there!

The given points are;(0,8) and (6,7).

Note: Remember to use two point formula for finding the eqaution which has two points.

Or

You can find Slope through the slope formula and then use one point formula to find eqaution.

Now, let's use here two point formula.

The formula is;

[tex](y - y1) = \frac{y2 - y1}{x2 - x1} (x - x1)[/tex]

Now, keep all values.

[tex](y - 8) = \frac{7 - 8}{6 - 0} ( x - 0) [/tex]

Simplify it.

[tex](y - 8) = - \frac{1}{6} (x)[/tex]

[tex]y - 8 = - \frac{1}{6} x[/tex]

[tex]or \: \frac{1}{6} x + y - 8 = 0[/tex]

Therefore, the eqaution is; (1/6)X + y - 8 = 0.

Hope it helps....

Answer:

x=40

Step-by-step explanation:

Sum of all angles in a quadrilateral is 360. Subtract 80 from 360. Now you have 280. Now you have to add all the x values together to see that 7x=280. Then you must simplify by dividing 7 on both sides, resulting in x=40

Equation if you wanna work it out and solve:

360=80+7x

Answer:

Where α is an acute angle (first figure)

The area of the shaded triangle = ((√3)·a²/4)·sin(α)·csc(120 - α))

Where α is an obtuse angle (second figure)

The required area of the shaded region = (√3)·a²/4 + (√3)·a²/4)·sin(α)·sec(α + π/6)

Step-by-step explanation:

Where α is an acute angle (first figure)

The given parameters are;

The given triangle = Equilateral Triangle

Let the sides of the equilateral triangle = 2·a

Therefore;

The measure of each interior angles of the given triangle = 60°

Let c represent the side of the shaded triangle opposite ∠α and b represent the side of the shaded triangle opposite ∠60° and c, represent the third side of the shaded triangle, we have;

The sides of the equilateral triangle = 2·a

By sine rule, we have;

c/sin(α) = b/sin(60°) = a/sin(180 - (60 + α)) = a/sin(120 - α))

b = sin(60°) × a/sin(120 - α)) = (√3)/2 × a/sin(120 - α))

The area of the shaded triangle = 1/2 × a × b × sin(α) = 1/2 × a × (√3)/2 × a/sin(120 - α)) × sin(α) = ((√3)·a²/4)·sin(α)·csc(120 - α))

The area of the shaded triangle = ((√3)·a²/4)·sin(α)·csc(120 - α))

Where α is an obtuse angle (second figure)

The required area of the shaded region = The area of the equilateral triangle - The area of the small unshaded triangle, with base side a and interior angles, (180° - α), 60° and ((180 - (180° - α) - 60°) = ) α - 60°

The area of the unshaded triangle is found as follows;

By sine rule, we have;

c/sin(180° - α) = b/sin(60°) = a/sin(α - 60°)

b = sin(60°) × a/sin(α - 60°) = (√3)/2 × a/sin(α - 60°)

The area of the unshaded triangle = 1/2 × a × b × sin(α) = 1/2 × a × (√3)/2 × a/sin(α - 60°) × sin(α) = -((√3)·a²/4)·sin(α)·sec(α + π/6)

The area of the shaded triangle =  -((√3)·a²/4)·sin(α)·sec(α + π/6)

The required area of the shaded region = 1/2×a²·sin(60°)  - (-((√3)·a²/4)·sin(α)·sec(α + π/6))

The required area of the shaded region = (√3)·a²/4 + (√3)·a²/4)·sin(α)·sec(α + π/6)

Answer:

the answer is B.

Step-by-step explanation: i done the test have a nice day :))))