3 years ago

Which statement must be true?

Mathematics

2 answers:

balandron [24]3 years ago

5 0

I believe that the answer is 2.

vlada-n [284]3 years ago

4 0

It would be 2! A and X! Basically, you're just seeing which letters line up with one another! good luck! I hope you do well, and pass! (:

You might be interested in

Determine the open intervals on which the graph of f(x) = x - 4cos x is concave upward or concave downward

bazaltina [42]

The graph of the function $f(x)$ is

concave upward, when $f''(x)>0;$
concave downward, when $f''(x)$

Find $f''(x):$

$f'(x)=(x-4\cos x)'=1+4\sin x;$

$f''(x)=4\cos x.$

Now:

1. when $4\cos x>0,$ the graph of the function is concave upward and this is for

$x\in \left(-\dfrac{\pi}{2}+2\pi k,\dfrac{\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

2. when $4\cos x$ the graph of the function is concave downward and this is for

$x\in \left(\dfrac{\pi}{2}+2\pi k,\dfrac{3\pi}{2}+2\pi k\right), \text{ where } k\in Z.$

6 0

3 years ago

Can you square root a negative number? Why or why not?

kicyunya [14]

Yes you can because you just can

5 0

3 years ago

Read 2 more answers

I need to know how the find the value of x

Anit [1.1K]

The Pythagorean theorem a²+b²=c²
16²+18²=c²
256+324 = 580
√580
24=4x-6
(add six both sides)
30=4x
(divide 4 both sides.)
7.5=x (roughly)

7 0

4 years ago

Evaluate the expression<br> please help me

Contact [7]

Answer:

19/9 i think

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Need help finding X

Dvinal [7]

the value of x is 90

8 0

3 years ago

Read 2 more answers