All categories

2 years ago

1/2(3/4n+ 9) and 2(12 + 8x) -3(4x -9) i need help with these two

Mathematics

2 answers:

dedylja [7]2 years ago

7 0

1/2(3/4n+9)
4 7/8n

2(12+8x)-3(4x-9)
24+16x-12x-12
-12+4x

Ghella [55]2 years ago

5 0

I dont know if this is right but the answer to 2(12+8x)-3(4x-9) might be 4x+51?

You might be interested in

The measures of the angles of a triangle are shown in the figure below. Find the

dimaraw [331]

Answer:

318.6

Step-by-step explanation:

(3x-9) + (x+15) = 180

3x (x+15) -9 (x+15)

4x + 45x - 9x + 6 = 180

40x + 6 = 180

40x = 180 - 6

40x = 174

x = 4.34

(3x-9) = 4.34 * 3x-9 = 4.02

(x+15) = 4.34 + 15 = 19.34

180 - (4.02 + 19.34)

= 180 - 23.36

= 156.64

hope this answer helps!!

6 0

3 years ago

This tells you that the unknown number is multiplied by 3.

Semenov [28]

Answer:

do you have a photo, what tells us that the unknown number is multiplied by 3?

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Yall i need this to be corret please explain giving brainliest

ira [324]

Answer:

Pretty sure it's B

Step-by-step explanation:

Hope this helps

8 0

2 years ago

HELP ITS SOO HARD also can you please explain how to get the answer to where a dummy can understand cuz well I’m a dummy

Ksenya-84 [330]

Answer:

244.92 square inches

Step-by-step explanation:

You just have to fill in the formula with the information they gave you.

They gave you the diameter for base circle so you divide that number in half to get the radius which is what you need for the formula represent as "r".

r=3

h=10

and you know pi is 3.14

so just plug in the numbers.

SA=2x3.14x3^2+2x3.14x3x10

SA=6.28x9+6.28x30

SA=56.52+188.4

SA=244.92

7 0

3 years ago

What are the first and last terms of this geometric series

11Alexandr11 [23.1K]

ANSWER

E. 10 and 640

EXPLANATION

The given series is

$\sum_{i=1}^45 \times 2^{2i-1}$

To find the first term of the series we substitute i=1 to get,

$a_1 = 5 \times {2}^{2 \times 1 - 1}$

$a_1 = 5 \times {2}^{ 1} = 10$

For the last term of the series, we substitute i=4 to obtain,

$a_4 = 5 \times {2}^{2 \times 4 - 1}$

$a_4 = 5 \times {2}^{7}$

This implies that,

$a_4 = 5 \times 128 = 640$

Therefore the correct answer is E

7 0

3 years ago