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o-na [289]
3 years ago
13

I am confused on #7, can any smart people out there that understand math help me?

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
7 0
You are dividing the number with the x so 4 when you divide 4 on both sides 4x cancels out because it’s 0 and 8 divides by 4 is 4 so y=4
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Solve for x, if a solution is extraneous identify in the final answer. thx :)
Fantom [35]

Answer:

x = 6 and x = 11.

Step-by-step explanation:

sqrt(x - 2) + 8 = x

sqrt(x - 2) = x - 8

(sqrt(x - 2))^2 = (x - 8)^2

x - 2 = x^2 - 16x + 64

x^2 - 16x + 64 = x - 2

x^2 - 17x + 66 = 0

We can use the discriminant to find whether there are solutions to the equation.

b^2 - 4ac; where a = 1, b = -17, and c = 66.

(-17)^2 - 4 * 1 * 66

= 289 - 264

= 25

Since the discriminant is positive, we know there are two valid solutions to the equation.

x^2 - 17x + 66 = 0

(x - 6)(x - 11) = 0

The solutions are when x - 6 = 0 and x - 11 = 0.

x - 6 = 0

x = 6

x - 11 = 0

x = 11

Hope this helps!

8 0
3 years ago
Read 2 more answers
If [infinity] cn8n n = 0 is convergent, can we conclude that each of the following series is convergent? (a) [infinity] cn(−3)n
pashok25 [27]

Answer:

a) we know that this is convergent.

b) we know that this might not converge.

Step-by-step explanation:

Given the \sum^\infty_{n=0}C_n8^n is convergent

Therefore,

(a)  \sum^\infty_{n=0}C_n(-3)^n The power series \sum C_nx^n has radius of convergence at least as big as 8. So we definitely know it converges for all x satisfying -8<x≤8. In particular for x = -3

∴ \sum^\infty_{n=0}C_n(-3)^n  is convergent.

(b) \sum^\infty_{n=0}C_n(-8)^n -8 could be right on the edge of the interval of convergence, and so might not converge

8 0
3 years ago
Name the Solid.
Andrew [12]

Answer:

41,223.98

Step-by-step explanation:

Find the volume of the full sphere, then divide by 2 to get 1/2 of a sphere.

The answer for the full sphere is 82447.96 but divide by 2 and get 41,223.98.

6 0
3 years ago
Read 2 more answers
the walls of square storage room in a warehouse are 300 feet long. what is the distance from one corner to the other corner of t
Nana76 [90]
Since it’s a square room, each side has length of 300ft. Simply use the Pythagorean Theorom to find the length from one corner to the opposing corner.

300^2 + 300^2 = c^2

90000 + 90000 = c^2

180000=c^2

Find the square root of 180000

C= 424.264069

The length from opposing corners is roughly 424.26ft
3 0
3 years ago
Read 2 more answers
I need help on this problem
Agata [3.3K]

Answer:

Total no. of peppers delivered each day=72

Let the total no. of peppers delivered each day be x

5/8 of the peppers are green

\frac{5}{8} x = 45

x =  \frac{45 \times 8}{5}  = 72

3 0
3 years ago
Read 2 more answers
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