2 years ago

If x = 3 + 2√2, then the value of (x - 1/x) is a) 4√2 b) 2√4 c) 8

Mathematics

1 answer:

vitfil [10]2 years ago

5 0

Your answer is: A. 4/2

Hope this helps and happy holidays!!

You might be interested in

Solve for this equation z^2-12z=-13

ASHA 777 [7]

Answer:

$z=\sqrt{-1}$

Step-by-step explanation:

$z^2-12z=-13\\z^2-\frac{-12}{+12} =-13+12\\z^2=-1\\\sqrt{z^{2} } =\sqrt{-1}\\ z=\sqrt{-1}$

5 0

2 years ago

What is the average rate of change of the function f(x)=2x2+8 over the interval [2, 6]? A 2 B 4 C 12 D 16

Vinil7 [7]

Answer:

D. 16

Step-by-step explanation:

Average rate of change: $\frac{f(a) - f(b)}{a-b}$

Simply plug in 6 for a and 2 for b

6 0

3 years ago

Read 2 more answers

Maria needs to make a total of 80 deliveries this week. So far she has completed 48 of them. What percentage of her total delive

Amiraneli [1.4K]

What I always do to solve this, is find a common factor for each number first.

Usually 4 or 5 works best. I'll use 4.

4 goes into 80 20 times, which means that 4 = 5% of 80.

If 4 = 5%, and 48 = 12 x 4, then 48 must equal 60% of 80.

(Another way to solve this problem is: simplify 48 / 80. This simplifies to 3/5.

3/5 = 60%)!

4 0

3 years ago

Given the figure below, find the values of x and z

Ratling [72]

$(13x-85)^o=97^o\\\\13x-85=97\ \ \ |+85\\\\13x=182\ \ \ |:13\\\\x=14$

$z^o+97^o=180^o\ \ \ |-97^o\\\\z^o=83^o$

Answer: x = 14; z = 83

4 0

3 years ago

the ratio of men to women working for a company is 4 to 7. If there are 286 employees total, how many men work for the company?

patriot [66]

Answer: 104 men work for the company

Step-by-step explanation:

man = 4 x

woman = 7--------- you don't need these so i cross it out.

------------------------

total = 11 286

so you get 1144 - 11x

then divide 1144 by 11 and you get x = 104

3 0

3 years ago