Please help..........................

Answer: speed is  540 km/h

Step-by-step explanation:   Lets mark speed as v.

Because distenace is same, you can mark   6 h · 900 km/h = 10 h · v

and v = 5400 km / 10 h = 540 km/h.

Or using inverse proportions :   10 h / 6 h  =  v / 900 km/h  .

Before multiplying you turn lastproportion around :

10 h / 6 h = 600 km/ h / v   ,which gives   10 v = 6 · 900 km/h

and result is same

9514 1404 393

Answer:

Step-by-step explanation:

The acute angles in a right triangle are complementary, so ...

  C = 90° -50°

  C = 40°

__

SOH CAH TOA reminds you of the relations ...

  Cos = Adjacent/Hypotensue

  Sin = Opposite/Hypotenuse

Then ...

  cos(50°) = c/9

  c = 9·cos(50°) ≈ 5.79

  sin(50°) = a/9

  a = 9·sin(50°) ≈ 6.89

Answer:

the final grade will decrease by 10 points

Answer:

Graph W

Step-by-step explanation:

Because in 2016, there are twice the initial number which is 10, there are 20 destinations 1 year after 2015. In 2017, there's twice the amount of destinations in 2016. In 2016, there has been 20 destinations. 20x2 is equal to 40. Therefore, in 2017, there has been 40 destinations.

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Answer:

[tex] \sqrt{60} \\ = 7.746[/tex]

Answer:

The dimensions are 5 and 10 inches

Step-by-step explanation:

The area is 50 square inches and the length is twice the width. 10 is the length, which is two times 5. 10 times 5 is 50.

The length is 10 and the width is 5.

Answer:

3x+94+x+18+2x-4=180(being straight line)

6x+108=180

6x=180-108

x=72/6

x=12

Step-by-step explanation:

Step-by-step explanation:

Its Undefined.

Reason

Slope (m) = y2 - y1/(x2-x1)

= 3-(-6)/(12-12)

=9/0

Undefined

You can clearly see this from the points. The x value has 2 different values for y... Which Makes the points not that of a function.

Answer:

The line equation is Y=(1/2)x+2

Step-by-step explanation: Start with the standard from: y=mx+b

Find the slope, or change in the y value divided by change in the x value.

For this graph the slope is 1/2 meaning the y value goes up once every time the x value goes up two. this is represented by the m value

Now we need to find the y intercept, or where the graph passes through the y intercept, this is represented by b

We find the intercept by inserting a point n the line into our equation and solving for b:

Point: (2,3) Equation: y=(1/2)x+b

3=(1/2)2+b

3=1+b

-1  -1

2=b

Answer:

They are all linear equations/functions, I graphed them here:

Step-by-step explanation:

answer:

point D

step-by-step explanation:

=================================================

Explanation:

Start at the origin (0,0) which is where the x and y axis cross.

Move 4 units to the right, and then move five units down. You'll arrive at the location (4, -5) which is point D

You can think of the (x,y) coordinates as similar to latitude and longitude, or like an address.

Answer:

(- 4, 9 )

Step-by-step explanation:

Given the 2 equations

3x + 4y = 24 → (1)

3x + 2y = 6 → (2)

Subtract (2) from (1) term by term to eliminate x

3x - 3x + (4y - 2y) = 24 - 6

2y = 18 ( divide both sides by 2 )

y = 9

Substitute y = 9 into either of the 2 equations and solve for x

Substituting into (1)

3x + 4(9) = 24

3x + 36 = 24 ( subtract 36 from both sides )

3x = - 12 ( divide both sides by 3 )

x = - 4

solution is (- 4, 9 )

Answer:

0.0623 ± ( 2.056 )( 0.0224 ) can be used to compute a 95% confidence interval for the slope of the population regression line of y on x

Step-by-step explanation:

Given the data in the question;

sample size n = 28

slope of the least squares regression line of y on x or sample estimate = 0.0623

standard error = 0.0224

95% confidence interval

level of significance ∝ = 1 - 95% = 1 - 0.95 = 0.05

degree of freedom df = n - 2 = 28 - 2 = 26

∴ the equation will be;

⇒ sample estimate ± ( t-test) ( standard error )

⇒ sample estimate ± ( [tex]t_{\alpha /2, df[/tex]) ( standard error )

⇒ sample estimate ± ( [tex]t_{0.05 /2, 26[/tex]) ( standard error )

⇒ sample estimate ± ( [tex]t_{0.025, 26[/tex]) ( standard error )

{ from t table; ( [tex]t_{0.025, 26[/tex]) = 2.055529 = 2.056

so we substitute

⇒ 0.0623 ± ( 2.056 )( 0.0224 )

Therefore, 0.0623 ± ( 2.056 )( 0.0224 ) can be used to compute a 95% confidence interval for the slope of the population regression line of y on x

Answer:

[tex]16 ^\frac{3}{4} = \sqrt[4]{16^3}[/tex]

Step-by-step explanation:

Given

[tex]16 ^\frac{3}{4}[/tex]

Required

The equivalent

Using the following law of indices,

[tex]a ^\frac{m}{n} = \sqrt[n]{a^m}[/tex]

We have:

[tex]16 ^\frac{3}{4} = \sqrt[4]{16^3}[/tex]

Answer:

c... health

Step-by-step explanation:

Answer:

ecosystem biodiversity is often used a measure of its overall health.

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

explanation needed

Answer:

15 V2 - 9 V2 + V2

(2) 5 728 617 - 1252

(3) 'v125 + 5 *V81 - 6 V64

(4) vi2 • V3

(5) '1875 . 'V

(6) vii / - V2 3 V5 )

(7) 5 V6 / 10 V50

(8) 9 'v19 / 1729

(9) vis 12 - V15

(10) 8. 'V2X /

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Answer:

Your answer would be 4^-3.

Step-by-step explanation:

So, a negative exponent by definition, is writing out 1/x^y. Where x is the number and y is the negative exponent.

In this case, 4 would be the number and -3 would be the negative exponent.

So we're going from 1/x^y to x^-y in order to solve this. Therefore, this is something where the numbers can just be plugged in.

1/x^y ---> x^-y

1/4^3 ---> 4^-3

Your answer would be 4^-3.

Answer:  No puedo responder a esto sin que me muestres el problema.

Answer:

12, 11, 14

Step-by-step explanation:

if we describe x as the second side, we can describe the first side as x + 1 and the third side as x + 3. Since the perimeter is 37, we can sum these polynomials and set them equal to 37, and solve for x.

Answer:

[tex]\implies f(x) = ( x + 2)^2[/tex]

Step-by-step explanation:

Given :-

And we need to rewrite the function by completing the square. The function is ,

[tex]\implies f(x) = x^2+8x + 4[/tex]

[tex]\implies ( a + b)^2= a^2+b^2+2ab [/tex]

Rewriting the function :-

[tex]\implies f(x) = x^2+8x + 4\\\\\implies f(x) = x^2 + 2.2.2x + 2^2[/tex]

[tex]\implies f(x) = ( x + 2)^2[/tex]

Hence the function in whole square form is (x + 2)² .

Answer:

From Pythagoras Rule

c=√1²+2²

c=√5 cm

c= 2.2cm

To the Nearest tenth..

Answer:

x<2

Step-by-step explanation:

Its a open circle which means it isn't equal to 2. The numbers are getting lower, so x is less than 2.

Answer:

[tex] (x-1.3) ^2 + (y+3.5) ^2= 37 [/tex]

Step-by-step explanation:

Radius of the circle [tex] r = \sqrt {37}\: units [/tex]

Center of the circle (h, k) = (1.3, - 3.5)

Equation of the circle in center radius form is given as:

[tex] (x-h) ^2 + (y-k) ^2= r^2 [/tex]

Plugging the values of h, k and r in the above equation, we find:

[tex] (x-1.3) ^2 + (y+3.5) ^2= (\sqrt {37})^2 [/tex]

[tex] (x-1.3) ^2 + (y+3.5) ^2= 37 [/tex]

This is the required equation of the circle.

Answer:

1. 156 2. 84 3. 74

Step-by-step explanation:

1. b x h. 8 x 8 is every side on the square so one side is 64 and the one behind it is 64 also which is 128 and since that is the case with the other sides its 128 + 128 = 156

2. 1/2 x b x h = 1/2 x 4 x 3 = 6 x 2 because of the side behind it that is the same = 12. 6 x 5 = 30; 6 x 4 = 24; 6 x 3 = 18. 12 + 30 + 24 + 18 = 84

3. b x h. 2.5 x 2 = 5 x 2 because of the other side = 10; 7 x 2.5 = 17.5 x 2 = 35; 7 x 2 = 14 x 2 = 28. 10 + 35 + 28 = 76

Answer:

6(3x - 4)

Step-by-step explanation:

From the question, we can deduce the following points;

- 6 is multiplied by 3x minus 4

Translating the word problem into an algebraic expression, we have;

6 * (3x - 4)

Answer:

x - 5 = 63

x = 63 - 5

x = 58 years

Answer:

she will be 34

Step-by-step explanation:

x - Joseph age

(x-5)+x=63

2x=68

x=34

34- 5 =29 Angeles age

in 5 years she will be 29+5=34

Answer:

14.64%

Step-by-step explanation:

P(90<X<100) = normalcdf(90,100,82,8) = 0.1464308262 ≈ 0.1464 ≈ 14.64%

Therefore, about 14.64% of the scores are greater than 90.

By calculating the CDF of normal distribution, the percentage of scores that are greater than 90 are 14.6%.

The CDF function of a Normal distribution is calculated by translating the random variable to the Standard Normal, and then looking up a value from the precalculated "Phi" function (Φ), which is the cumulative density function of the standard normal. The Standard Normal, often written Z, is a Normal with mean 0 and variance 1. Thus, Z∼N(μ=0,σ²=1).

Let x1, x2, .... be the scores on the test.

X ~ N (82, 64)

[tex]= P(90 < X < 100) \\\\= P(\frac{90 -82 }{8} < \frac{X - 82}{8} < \frac{100-82}{8} ) \\\\= P(1 < \frac{X - 82}{8} < \frac{18}{8}) \\\\P(1 < Z < \frac{18}{8})\\ \\[/tex]

P(90 < X < 100) = Φ(18/8) - Φ(1) = 0.146 (using norm.s.dist function in excel)

Learn more about CDF function of normal distribution here

https://brainly.com/question/14936604

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