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2 years ago

The first term in a Geometric series is 3 and the third term is 27. What is the second term

Mathematics

2 answers:

BlackZzzverrR [31]2 years ago

7 0

Answer:

9 is the second term

Step-by-step explanation:

Luda [366]2 years ago

3 0

Answer:

3 x 3 = 9

9 x 3 = 27

Hope this helps

Step-by-step explanation:

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Given two functions f(x)=2x−1 and g(x)=−14x+2 , what is the function rule for (f+g)(x) ?

Sonbull [250]

Answer:

its b hope this helps sorry if wrong

Step-by-step explanation:

7 0

2 years ago

use the matrix tool to solve the system of equations enter the answer as an ordered pair. 8x+5y=9 -x+y=7

Dimas [21]

Answer:

x = -44/13

y = -65/13

Step-by-step explanation:

Using matrix form means using the crammers rule

The matrix form of the expression is written as;

$\left[\begin{array}{ccc}8&5\\-1&1\\\end{array}\right] \left[\begin{array}{ccc}x\\y\\\end{array}\right] = \left[\begin{array}{ccc}9\\7\\\end{array}\right]$

AX = B

taking the determinant of A;

|A| = 8(1) - 5(-1)

|A| = 8 + 5

|A| = 13

After replacing the first row with the column matrix;

$A_x =\left[\begin{array}{ccc}9&5\\7&-1\\\end{array}\right]$

|Ax| = 9(-1)-5(7)

||Ax| = -9 - 35

|Ax| = -44

x = |Ax|/|A|

x = -44/13

similarly for y

$A_x =\left[\begin{array}{ccc}8&9\\-1&7\\\end{array}\right]$

|Ay| = 8(7)+9

|Ay| = 56+9

|Ay| = 65

y = |Ay|/|A|

y = -65/13

6 0

2 years ago

Which formula can be used to describe the sequence?

alexdok [17]

Answer:

f(x+1) = -3/4 × f(x)

Step-by-step explanation:

first of all, the sign of the numbers in the sequence is alternating. so, there must be a "-" involved.

that eliminates the first and third answer options.

and the absolute values of the numbers in the sequence are going down. |f(x+1)| < |f(x)|

that eliminates the fourth answer option, as this says that

|f(x)| < |f(x+1)|. and that is the opposite of how the actual sequence behaves.

7 0

2 years ago

I'LL MARK BRAINLIEST!!!!!!

quester [9]

I got 1.5 I used Siri and then calculated tried to see if items correct so I went on safari and found nothing so I this it would be either a or c

Goodluck

6 0

1 year ago

In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5?

JulsSmile [24]

- 3 x² - 4 x + 5 = 0
$x_{1} = \frac{4+ \sqrt{16+60} }{-6} = \frac{4+8.718}{-6}$
x1 = -2.12
$x_{2} = \frac{4-8.718}{-6}$
x2= 0.786

4 0

2 years ago