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3 years ago

I need help i am timed

Mathematics

1 answer:

Vadim26 [7]3 years ago

3 0

Answer:

200 - 200

-147 - 53

90 - 143

-229 - -86

86 - 0

Step-by-step explanation: im not sure on the last two but i tried?

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Convert 19 inches to centimeters. Start Fraction 2.54 centimeters Over 1 inch End Fraction 2.54 centimeters 1 inch.

Angelina_Jolie [31]

Answer:

19 in = 48.26 cm

Step-by-step explanation:

Devide 19 by 2.54 you get 48.26 cm

3 0

3 years ago

Eliosa determined that the correlation coefficient of the data set -0.7. What percent of the total variation in the y-values is

Anon25 [30]

Answer:

51% of the variation in Y is not explained by the regression line.

Step-by-step explanation:

To find the amount of variation not explained by the regression equation (how you found the correlation coefficient), we need to find R. We already have r ...

So to find R from r ( the correlation coefficient ) we just square it.

r² = .7² = .49

Then we just subtract that number from 1 to get the amount of variation that is not explained - which is ... .49 - 1 = .51 (convert to percent) = 51%

5 0

4 years ago

Need help ASAP!!

Ilia_Sergeevich [38]

An object that is in motion as a projectile follows a path or trajectory of a parabola

The function and values are;

a) The equation of the quadratic function is; $\underline{y = \dfrac{111}{140} \cdot x - \dfrac{3}{140} \cdot x^2}$

b) The maximum height of the ball is approximately 7.334 m

c) Horizontal distance at maximum height 18.8 meters

Reason:

a) Known parameters are;

Let f(x) = a·x² + b·x + c represent the equation of the parabola modelling the path of the ball, we have;

Points on the path of the parabola = (0, 0), (35, 1.5), 37, 0)

Plugging the values gives;

0 = a·0² + b·0 + c

Therefore, c = 0

1.5 = 35²·a + 35·b

0 = 37²·a + 37·b

Solving gives;

a = -3/140, b = 111/140

The equation of the quadratic function is therefore;

$\underline{y = f(x) = \dfrac{111}{140} \cdot x - \dfrac{3}{140} \cdot x^2}$

b) The maximum height is given by the vertex of the parabola

The x-coordinate at the vertex is the point $-\dfrac{b}{2 \cdot a}$

Which gives;

$x-coordinate = \dfrac{\frac{111}{140} }{2 \times \dfrac{3}{140} } = 17.5$

The maximum height is therefore;

$f(x)_{max} = \dfrac{111}{140} \times 17.5 - \dfrac{3}{140} \cdot 17.5^2 \approx 7.334$

The maximum height of the ball is approximately 7.334 m

c) The distance the ball has travelled to horizontally is given by half of the range, R as follows;

The range of the motion, R = 37 meters

$Horizontal \ distance \ to \ maximum \ height = \dfrac{R}{2}$

Therefore;

$Horizontal \ distance \ to \ maximum \ height = \dfrac{37}{2} = 18.5$

The distance the ball has travelled horizontally to reach the maximum height horizontally 18.5 meters

Learn more about the trajectory of a projectile here:

brainly.com/question/13646224

8 0

2 years ago

In the app you are creating, a duck is going to fly from the coordinates (1, 3) then go 3 units right. And 6 units down. Write a

nevsk [136]

Answer:

The rule of the translation is (x,y) ----> (x+3,y-6)

The coordinates of the duck’s final position are (4,-3)

Step-by-step explanation:

we know that

A duck is going to fly from the coordinates (1, 3) then go 3 units right. And 6 units down

That means -----> The rule of the translation is

3 units right ----> x+3

6 units down ---> y-6

(x,y) ----> (x+3,y-6)

To find out the the coordinates of the duck’s final position, apply the rule of the translation to the duck’s original position

(1,3) ------> (1+3,3-6)

(1,3) ------> (4,-3)

8 0

3 years ago

The Mt. Aconcagua is 22,834ft tall and Mount Everest is 29,035 feet tall. And he climbed both mountains in two years how many fe

Romashka-Z-Leto [24]

Answer:

51869 ft

Step-by-step explanation:

If he climbed both mountains, then we add the heights together

22834 + 29035

51869 ft

6 0

3 years ago

Read 2 more answers