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d1i1m1o1n [39]
3 years ago
15

1,5,9,13 generalize the pattern by finding the nth term

Mathematics
1 answer:
ladessa [460]3 years ago
7 0

Answer:

an= a1 +(n-1)*4

Step-by-step explanation:

a1 = 1, a2 =5, a3 = 9, a4= 13,... an= ?

we see that each term is getting bigger so usually that will happen because of addition or multiplication-in our case add 4 to previous term

a1 = 1,

a2 = a1+(2-1) 4 = 1+4 = 5,

a3 = a1 + (3-1)*4 = a1+8 = 1 + 8 = 9,

a4= a1 + (4-1)*4 = a1 + 12 = 1+12= 13,

...

an= a1 +(n-1)*4

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X + 5y = 28<br> - x - 2y = -13
bazaltina [42]

Answer:

x=3

y=5

Step-by-step explanation:

x+5y=28 (i)

-x-2y=-13. (ii)

add equation 2 from equation 1

x+5y=28

-x-2y=-13

3y=15

y=5

put the value of y in equation 1

x+5y=28

x+5*5=28

x+25=28

x=28-25

x=3

8 0
3 years ago
Joseph completes the paintings shown in 129 minutes. If he took the same amount of time to complete each painting, how much time
olga55 [171]
Depending on how many paintings there were you would divide that number by 129 to figure out how long it took to complete one painting. Hope this helps. 
6 0
3 years ago
Find the percent of discount for $70 discounted to $63. Round to the nearest percent.
aksik [14]
70 x P = 63
P=63/70 = 0.9
Since P is 1-the discount
1-discount= 0.9
discount is 0.1, or 10 %
5 0
3 years ago
the length of a rectangle is 3 ft less than twice the width and the area of the rectangle is 65 ft squared find the dimensions.
Paha777 [63]

Answer: length is 10 feet, width is 6.5 feet

Step-by-step explanation:

6 0
3 years ago
A stainless steel patio heater is a square pyramid. The length of one side of the base is 23.4 in. The
ser-zykov [4K]

The height of the square-based pyramid is 91.72 in if the length of one side of the base is 23.4 in.

<h3>What is a square pyramid?</h3>

In geometry, it is defined as the shape having a square base with equal sides length and all the vertex of the square's joints at the top, which is perpendicular to the center of the square.

We have a square pyramid.

Length of the pyramid = 23.4 in

The slant height of the pyramid = 93.2 in

From the figure:

Base length CB  = DC = 23.4 in

In a right-angled triangle, BCD

Applying Pythagoras theorem:

DC² + CB² = DB²

23.4² + 23.4² = DB²

DB = 33.092 in

OB = (1/2)DB

OB = (1/2)33.092 = 16.546 in

In the right-angle triangle AOB, again applying Pythagoras theorem:

AO² + OB² = AB²

h² + 16.546² = 93.2²

AO = h (height of the square pyramid)

AB = slant height = 93.2 in

After calculating, we get:

h = 91.719 ≈ 91.72 in

Thus, the height of the square-based pyramid is 91.72 in if the length of one side of the base is 23.4 in.

Learn more about the pyramid here:

brainly.com/question/13057463

#SPJ1

4 0
2 years ago
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