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madreJ [45]
3 years ago
12

I need help pls right now

Mathematics
1 answer:
Inga [223]3 years ago
8 0

Answer:

what number

Step-by-step explanation:

what number do you need to know

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the nth term of a sequence is given by an²+bn where a and b are integers the 2nd term of the sequence is 2 4th term of the seque
stealth61 [152]

Answer:

54

Step-by-step explanation:

Tn = an²+bn

T2 = a2²+2b

2 = 4a +2b

Multiply all through by 2

4 = 8a +4b

4b = 4-8a

T4 = a4² + 4b

20 = 16a +4b

4b = 20-16a

4-8a = 20-16a

16a -8a = 20-4

8a = 16

a = 16/8 = 2

4b = 4-8a = 4-8(2) = 4-16 = -12

b = -12/4 = -3

T6 = a6² + 6b

T6 = 2(36) + 6(-3) = 72 -18 = 54

7 0
2 years ago
Read 2 more answers
Yuri has 2/7 of a bag of carrots. If he eats half the carrots, what fraction of the bag of carrots will she have left ?
olga2289 [7]

Yuri will have 1/7 of a bag of carrots left. This is because half of 2 is 1.

4 0
3 years ago
Read 2 more answers
(2,0) (3,9) equation
valkas [14]

Answer: if ur  trying to do the equation for coordinate planes its

Y2-y1.

                 X1-x2

Step-by-step explanation:

That's what i was taught I'm in 8th grade tho so

6 0
3 years ago
Give a big-o estimate for the number of operations (where an operation is an addition or a multiplication) used in this segment
Marianna [84]
We have a "rectangular" double loop, meaning that both loops go to completion.
So there are 3*4=12 executions of t:=t+ij.

Assuming two operatiions per execution of the innermost loop, (i.e. ignoring the implied additions in increment of subscripts), we have 12*2=24 operations in all.

Here the number of operations (+ or *) is exactly known (=24). 

Big-O estimates are used for cases with a varying scale of operations, governed by a variable (usually n) to indicate the sensitivity of the number of operations relative to a change in the size of n.

Here we do not have a scale, nor n is defined.  The number of operations is constant and known at 24.   So a variable is required to find the big-O estimate.
6 0
3 years ago
A circle has a diameter of 7.2. What is the circumference of the circle rounded to the near tenth of an inch
KATRIN_1 [288]
22.6is the answer check it first .
The formula of cicumfrance is
C= 2 x pi x r
8 0
2 years ago
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