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amid [387]
3 years ago
14

Please help. What is the intermediate step in the form (x+a)^2=b as a result of completing the square for the following equation

?

Mathematics
1 answer:
nevsk [136]3 years ago
7 0

Step-by-step explanation:

It makes 2x^2-20-206=0

Find D

Then find X1 and X2

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Given the sequence an defined recursively below, find a4.<br> a1a2an=1=4=2an−1+an−2
const2013 [10]

Answer:

  a_4=22

Step-by-step explanation:

Maybe you have ...

  a_1=1\\a_2=4\\a_n=2a_{n-1}+a_{n-2}

Then ...

  a_3=2\cdot 4+1=9\\\\a_4=2\cdot 9+4=22

6 0
3 years ago
The quotient of 6 times a number and 16
Debora [2.8K]

6 times a number = 6n

The quotient of 6 times a number and 16 = 6n / 16

Hope it helps

4 0
4 years ago
Read 2 more answers
If 2 1/4 pounds of bananas cost $1.89, what is the cost per pound?
Svetach [21]

Answer:

The cost per pound of bananas is $0.84.

Step-by-step explanation:

The question asks to use the given information to set up a proportion and solve for the missing variable.  In this case, we know that the cost of 2 1/4 (or 2.25) bananas is $1.89.  Since they are asking for cost per pound, we can set up a ratio (fraction):

\frac{1.89}{2.25}=\frac{cost}{pounds}

Since the cost of bananas is the same regardless of the number of pounds, we can set up a proportion to find the cost for just one (1) pound:

\frac{1.89}{2.25}=\frac{x}{1}  Where 'x' is the cost.

Using cross-multiplication and division we get:  2.25x = 1.89.  Next, we use inverse operations to divide both sides by 2.25:  2.25x/2.25 = 1.89/2.25.  Solve:  x = 0.84 or $0.84 per pound.  

6 0
4 years ago
Gerald graphs the function f(x) = (x – 3)2 – 1. Which statements are true about the graph? Check all that apply. The domain is {
katrin2010 [14]
Hey! Statement 1 is false because the domain of f is all real numbers since the function is quadratic.

Statement 2 is true.

Statement 3 is true because when we graph f, it is a parabola opening upwards with vertex (3, -1). Since it is opening upward, then the value of x from -∞ to 3 is decreasing while increasing from 3 to ∞.

Statement 4 is false because we just stated above that f is decreasing from -∞ to 3. Hence, f is also decreasing from -1 to 3. Hence, f is not increasing from -1 to ∞.

Statement 5 is false because the axis of symmetry is x = 3.

Statement 6 is true.
Hope this helps! :)

8 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP. Don’t send a link just put the answer. I’ll give brainpower to whoever answers!!!!!
givi [52]

Answer:

d/c = 8

Step-by-step explanation:

f(x) = 5.4321×2^×

f(4) = 5.4321×2^4 = d

f(1) = 5.4321×2^1 = c

d/c = (5.4321×2^4)/(5.4321×2^1) = 2^3 = 8

6 0
3 years ago
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