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3 years ago

Please help me???????

Mathematics

1 answer:

Ne4ueva [31]3 years ago

6 0

Answer:

i can't see it

Step-by-step explanation:

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What is the r value of the following geometric sequence? 2, 6, 18, 54,...

irga5000 [103]

162 is the next in the sequence. It's a sequential value. Just multiply the previous number by 3, and you have you answer.

5 0

3 years ago

Sokhem is Chanda's older brother.In six more years Sockem will be twice chendas age now.In six more years the sum of their ages

const2013 [10]

Answer:

Sokhem: 30
Chanda: 18

Step-by-step explanation:

Let c represent Chanda's age now. In six years, the Sokhem's age will be 2c. At that time, the sum of their ages is ...

(c+6) +2c = 60

3c = 54 . . . . . . . . subtract 6, collect terms

c = 18 . . . . . . . . . . divide by 3

Chanda is 18, Sokhem is 30.

_____

Check

In 6 years Chanda will be 24, Sokhem will be 36. The sum of their ages then will be 24+36 = 60. Since Chanda is 18 now, Sokhem's age then will be 2 times Chanda's age now.

5 0

3 years ago

The following estimated regression equation based on 30 observations was presented. ŷ = 17.6 + 3.8x1 − 2.3x2 + 7.6x3 + 2.7x4 The

trapecia [35]

Answer:

a) = 0.9739

b) = 0.969

c) option A is correct

Step-by-step explanation:

Given that:

sample size n = 30

SST = 1803

SSR = 1756

$R^2 = \dfrac{SSR}{SST} \\ \\ R ^2 = \dfrac{1756}{1803} \\ \\ \mathbf{R^2 =0.9739}$

The adjusted $R_a^2$ is computed as:

$R_a^2 = 1 - (\dfrac{n-1}{n-p})(1-R^2)$

where;

$p = k+1 \\ p= 4+1 = 5$

$R_a^2 = 1 - (\dfrac{30-1}{30-5})(1-0.9739)$

$R_a^2 = 1 - (\dfrac{29}{25})(0.0261)$

$R_a^2 = 1 - (1.16)(0.0261)$

$R_a^2 = 1 -0.030276$

$\mathbf{R_a^2 \simeq 0.969}$

7 0

3 years ago

Solve for an angle in right triangles

madreJ [45]

The angle of B is 56.2 degrees

Solution:

Given is a right angled triangle ABC

From given figure,

AB = 9

CB = 5

We have to find the angle of B

Let the angle of B be $\theta$

By definition of cosine,

$cos \theta = \frac{adjacent}{hypotenuse}$

Here, adjacent = CB and hypotenuse = AB

Therefore,

$cos \theta = \frac{5}{9}\\\\cos \theta = 0.556$

Taking cos inverse on both sides,

$\theta = cos^{-1}(0.556)\\\\\theta = 56.22038005 \approx 56.22$

Thus the angle of B is 56.22 degrees

5 0

4 years ago

Which table shows a constant rate of change please answer!

lys-0071 [83]

Answer: Feet to yards, all other are inconsistent.

Step-by-step explanation:

3 0

3 years ago