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lina2011 [118]
3 years ago
11

Which of the following is an arithmetic sequence?

Mathematics
2 answers:
Flura [38]3 years ago
7 0
The answer D is correct
Delvig [45]3 years ago
4 0
D is the correct answer because each number increases by the first number in the sequence, making it and arithmetic sequence
hole this helped :)
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How do you do this?????????????
uranmaximum [27]
Hey there!

To find the value of an angle in a triangle, you need to add the 3 angles. You have angles with 55 degrees, 65 degrees, and x degrees. Put this into an equation. The equation would be 55+65+x=180. Simplify to get 120+x=180. You need to isolate x, so subtract 120 from both sides to get x=60. So the value of x is 60 degrees.

I hope this helps!
7 0
3 years ago
Read 2 more answers
A bacteria culture begins with 15 bacteria which double in amount at the end of every hour. How many bacteria are grown during t
elixir [45]
We use P = i•e^rt for exponential population growth, where P = end population, i = initial population, r = rate, and t = time
P = 2•i = 2•15 = 30, so 30 = 15 [e^(r•1)],
or 30/15 = 2 = e^(r)
ln 2 = ln (e^r)
.693 = r•(ln e), ln e = 1, so r = .693
Now that we have our doubling rate of .693, we can use that r and our t as the 12th hour is t=11, because there are 11 more hours at the end of that first hour
So our initial population is again 15, and P = i•e^rt
P = 15•e^(.693×11) = 15•e^(7.624)
P = 15•2046.94 = 30,704
4 0
3 years ago
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Help! I’ll give I Brainlyst to the first person but please I need it right now!
Nuetrik [128]

Answer:What’s your question?

Step-by-step explanation:

8 0
3 years ago
Find the circumference and area of a circle with a diameter of 10 inches. Leave your answers in terms of pi. (4 points)
il63 [147K]
D=10 a=5
5×5×π=25π
a=25π
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c. C = 10π A = 25π
3 0
3 years ago
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An integer is 15 more than 2 tomes another. If the product of two integers is -27 then find the integers
andre [41]

Answer:

x = 9 and y = -3

Step-by-step explanation:

Let's say the first integer is x and the second one is y. Then, if we put the words into mathematical expressions, we get:

x = 15 + 2y

xy = -27

We can use substitution to solve this system of equations. We put 15 + 2y in for x in xy = -27:

(15 + 2y)*y = -27 ⇒ 2y² + 15y = -27 ⇒ 2y² + 15y + 27 = 0

Now, we have a quadratic to solve, so after some trial and error, we get:

(2y + 9)*(y + 3) = 0

Setting each of these to 0, we get two possible answers for y:

y = -9/2 or y = -3.

However, it says that y is an integer, so it can't be -9/2 and must be -3. We use this to find x:

x = 15 + 2*(-3) = 15 - 6 = 9

So, the two numbers are x = 9 and y = -3.

7 0
3 years ago
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