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ElenaW [278]
3 years ago
8

NEED HELP WITH ALGEBRA 1 !

Mathematics
2 answers:
andre [41]3 years ago
5 0
The pattern increases by 4, then 6, then 8
Since the rate is changing, the function has a square in it.
If you plug 1, 2, and 3 into the functions below, n^{2} +n is the one that works.

The answer is n^{2} +n
ohaa [14]3 years ago
5 0
13) Here, Sequence : -2, -6, -18, -54
Common Ratio = a₂/a₁ = -6/-2 = 3
As the expression is in negative sign, it's sequence will be -3ˣ
Where x = number of terms in the sequence [ By this rule, you can calculate the unknown nth number]

<span>In short, Option C is your answer!!!!

14) Here, a</span>₂-a₁ = 6-2=4, a₃-a₂ = 12-6 = 6
So, difference is increasing by 2 at each step, as it's not arithmetic, It must deviate by the square on it. As only one option has square on it, it will be
 (n²+n)

In short, Option B is your final answer.

15)V = 2πr²h
 h = V / 2πr²

In short, Option D is your final answer.

Hope it helped, Please Let me know, if you have some doubts!!
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5 equals 5/1.  Simple as that.


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An acite becaues it lowers than the others
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Read 2 more answers
Cards. A deck of 52 cards is shuffled and dealt. Find the probabilities of the following events: a) the tenth card is a queen; b
Veronika [31]

Answer:

  • 0.0374
  • 0.0010

Step-by-step explanation:

number of cards = 52

number of queen = 4

number of spades = 13

A) probability that the tenth card is a queen

drawn time (r) = 1

position of success(x) = 10th

p = 4/52

P( x,r,p) = x-1Cr-1*p^(r) * q^(x-r)

p(10,1,4/52) = 9C0(4/52)^1 * (48/52)^9 = 0.0374

B) probability the twentieth card is a spade

x = 20

r = 1

p = 13 / 52

P(20,1,26/52) = 19C0(26/52)^1 * (26/52)^19 = 0.0010

c)  The last five cards been spades

p(last five cards been spades )

p(48..52, 5, 13/52 ) = 47...52C4(13/52)^5 * (39/52)^48..52 - 5

 

4 0
3 years ago
12. A flat, square roof needs a square patch in the corner to seal a leak. The side length of
NISA [10]

Answer:

Step-by-step explanation:

Area of the good part= area of whole roof - area of bad part

Since the roof is a square roof, the area will be calculated using the formulae for area of a square

Area of a square =length²

Area of good part =(x+12)²-x²

A= {(x+12)(x+12)} - x²

A = (x²+12x+12x+144) -x²

Open the bracket and rearrange the equation

A= x²-x²+24x+144

A=(24x+144) ft

5 0
2 years ago
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