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3 years ago

Evaluate 2y²(x+y) when x = 1 and y = 5 Show working out

Mathematics

2 answers:

Svetlanka [38]3 years ago

5 0

Answer:

300

Step-by-step explanation:

2y²(x+y)

2(5)²(1+5)

2(25)6

(50)6

300

Please mark as brainliest.

Harlamova29_29 [7]3 years ago

4 0

Answer:

300

Step-by-step explanation:

2(5)²(1+5)

2(25)(6)

50(6)

300

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Which of the following is the standard equation of the ellipse with vertices at (1,0) and (27,0) and an eccentricity of 5/13?

Dovator [93]

The equation of the elipse is given by:

$\frac{(x - 14)^2}{169} + \frac{y^2}{144} = 1$

The equation of an elipse of center $(x_0, y_0)$ is given by:

$\frac{(x - x_0)^2}{a^2} + \frac{(y - y_0)^2}{b^2} = 0$

Values a and b are found according to the <u>vertices and the eccentricity</u>.

It has vertices at (1,0) and (27,0), thus:

$x_0 = \frac{27 + 1}{2} = 14$

$y_0 = \frac{0 + 0}{2} = 0$

$a = \frac{27 - 1}{2} = 13$

$a^2 = 169$

It has eccentricity of $\frac{5}{13}$ , thus:

$\frac{5}{13} = \frac{c}{a}$

$\frac{5}{13} = \frac{c}{13}$

$c = 13$

Thus, b is given according to the following equation:

$c^2 = a^2 - b^2$

$b^2 = a^2 - c^2$

$b^2 = 169 - 25$

$b = \sqrt{144}$

$b = 12$

The equation of the elipse is:

$\frac{(x - 14)^2}{169} + \frac{y^2}{144} = 1$

A similar problem is given at brainly.com/question/21405803

3 0

3 years ago

A 1,600.00 principal earns 7% interest compounded semiannually twice per year' after 33 years what is the balance in the account

Dmitrij [34]

A=1600(1+0.07/2)^(2*33)=15,494.7

7 0

3 years ago

Find the distance between the points R(0,1) and S(6,3.5)

Genrish500 [490]

Answer:

Step-by-step explanation:

=(3)2+(5.5)2‾‾‾‾‾‾‾‾‾‾‾‾√

d=(3)2+(5.5)2

=9+30.25‾‾‾‾‾‾‾‾‾√

d=9+30.25

=3‾√9.25

d=39.25

=6.264982

5 0

2 years ago

Anybody knows what is -2(g - 3) = 2(g - 7)

Veronika [31]

Answer:

g = 4.6

Step-by-step explanation:

-3(g - 3) = 2(g - 7)

-3g + 9 = 2g - 14

-3g = 2g - 23

-5g = -23

g = 4.6

3 0

3 years ago

Multiple samples of students were asked four questions, with the sampling variability of their answers to question 4 being the h

iogann1982 [59]

The variability measures the closeness of the individual data provided. So, the most reliable sampling is the one with the lowest variability.

For this case, the question with the lowest sampling variability is question 3. Therefore, we can conclude that the answers to which of the questions are most reliable is question 3.

4 0

3 years ago