All categories

3 years ago

Tulislah empt suku pertama dari barisan yang rumus suku ke n nya adalah Un = 3n^2-1

Mathematics

1 answer:

nirvana33 [79]3 years ago

6 0

If n ∈ $\mathbb{N}$ then
$U_{0}=3(0)-1=-1$
$U_{1}=3(1)-1=2.$
$U_{2}=3(2^2)-1=11.$
$U_{3}=3(3^2)-1=26.$

You might be interested in

Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 item

amid [387]

Answer:

More than 7

Step-by-step explanation:

Given that:

Joshua's goal is to sell more than 20 items at a farmer's market.

Number of items already sold = 6

So, number of more items to be sold > Total number of items to be sold - Number of items already sold > 20 - 6 > 14

Given that each customer buys 2 items.

Let $c$ be the number of customers.

So, number of items bought be the customers = Number of items bought by each customer multiplied by the number of customers = $2c$

And as per the question statement,

Number of more items to be sold > 14 (as calculated in above step)

$2c>14\\\Rightarrow \bold{c>7}$

Therefore, the answer is: More than 7 additional customers are required.

3 0

3 years ago

Find the length of side X

mel-nik [20]

Solve using the Pythagorean theorem.

The hypotenuse is c.

5 0

3 years ago

04.01 mc y-2x=-1 and 2y-x=4 choose the correct graph of the given systems of equations

ira [324]

Answer:

1st one m=0

y= 0.49875311x / cm

No horizonal asymptotes

x= 1/2 + 2.005 mcy

2nd one is

slope 1/2

y intercept (0,2)

x y

-4 0

0 2

Step-by-step explanation:

for 2

starting point ay y 2 make a point

then rise over run

go up 1 and to the right 2 and point , then up 1 and to the right 2 and point

there is your graph

6 0

3 years ago

sharia has a full time job and earns 475$ each week but she starts looking for ways to increase her weekly earnings . sharia fin

Arlecino [84]

Answer:

12 hours

Step-by-step explanation:

Full time job:

Earning per week = $475

Part time job :

Earning per hour = $11

Number of working hours per week at per time job to increase weekly earning to atleast $600 ;

Let number of hours = h

Full time earning + earning per hour * (number of hours) ≥ 600

$475 + ($11 * h) ≥ 600

$475 + $11h ≥ 600

11h ≥ 600 - 475

11h ≥ 125

h ≥ 125 / 11

h ≥ 11.36

Hence, sharia will need to work for 12 hours per week

5 0

3 years ago

The side of a square is (4x - 2y). What is the perimeter of the square?

aksik [14]

16x-8y Cause you simply add all of the x's and y's together

8 0

3 years ago

Read 2 more answers