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Yuliya22 [10]
2 years ago
8

What are the solutions to the equations x^2 + 3 = 124?

Mathematics
2 answers:
babunello [35]2 years ago
3 0
X^2=121
x=11 or x=-11
Mars2501 [29]2 years ago
3 0

Answer:

C. -11 and 11

Step-by-step explanation:

x^2 + 3 = 124

x^2 = 124 - 3

x^2 = 121

x = √121

x = 11 (or -11)

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The numbers of seats in the first 12 rows of a high-school auditorium form an arithmetic sequence. The first row has 9 seats. Th
Daniel [21]
A₁ = 9
a₂ = 9+2  → a₂ = a₁ + 2. Since it's an AP, d, the common difference is 2

1) Then the recursive formula is :
a(n) = a(n-1) + 2

2) Explicit formula:
It's an AP, with first term a₁, d= common difference and n = number of term, which is the number of rows in this problem.
the value of the nth term is given by the formula is:
value of nth term  = a₁ + (n-1).d

3) Number of seats in the 12th row:

9 + (12-1).2 = 31 seats


7 0
3 years ago
Please help! this is due tmr show work too please of can!
yKpoI14uk [10]
The rate of change is -5/4



I find it best to use the Slope formula
M= y2-y1/x2-x1



So we to use need any 2 points on the graph (I used the first 2)
•(0,200) and (80,100)

Now we set up the problem 100-200/80-0
Then you’ll subtract and should get
-100/80
Now you’ll simplify and once you’re done simplifying your answer should be -5/4.


Here is my work. Hope this Helps!

4 0
2 years ago
What pair of factors of -45 has a<br> sum of 4?
damaskus [11]

Answer:

9 and -5

Step-by-step explanation:

9*-5=-45

9+-5=4

5 0
2 years ago
Read 2 more answers
PLS HELP.<br> YOU WILL GET A GOOD DEED :)
Ludmilka [50]

Answer:

a) 6 2/5  

b) 13 1/2

Step-by-step explanation:

Have a nice day!

Can I maybe have brainliest?

I forgot it was simplify..

8 0
3 years ago
4^2-6(2^x)-16=0<br><br><br>solve for x
ahrayia [7]
Assuming that   <span>4^2-6(2^x)-16=0   is correct, we can rearrange it as:

</span><span>-6(2^x) + 4^2 - 16=0

Are you sure it's not   </span>6(2^x) + 4^2 - 16=0  ?

If   6(2^x) + 4^2 - 16=0    is correct, then

6(2^x) + 4^2 - 16=16 - 16 = 0, that is,   6(2^x) = 0.  Then x = 0 (answer)
8 0
3 years ago
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