Ask question

Ask question

All categories

3 years ago

11

A 50-foot ladder leans against a wall, as shown in the figure below. If the base of the ladder is 30 feet away from the wall, ho

w tall is the wall?
Select one:
A. 3
B. 4
C. 5
D. 40

1 answer:

tamaranim1 [39]3 years ago

4 0

Pythagorean theorem gives u answer d. Ill include work for you in chat

You might be interested in

Can someone help me ? And show me the steps

kow [346]

If the line is parallel, it has the same slope. So now just find the y intercept and put it into slope-intercept form

3 0

3 years ago

The function f(x) = In(x) has a domain of all real numbers greater than zero and a range of all real numbers. The

solniwko [45]

Answer:

The domain of f–1(x) is all real numbers and the range is all real numbers greater than 0.

Step-by-step explanation:

4 0

2 years ago

Please solve this quickly

adell [148]

Answer:

I Didn't see nothing

Step-by-step explanation:

So I can't help you

7 0

2 years ago

Read 2 more answers

What should you multiply the top equation by so that y is eliminated when the

VLD [36.1K]

Your answer is D. 2 :)

8 0

3 years ago

Read 2 more answers

Find the characteristic polynomial of A. Use x for the variable in your polynomial.You do not need to factor your polynomial. A

Vesna [10]

Answer: The required characteristic polynomial of the given matrix A is $x^3+6x+11x+6=0.$

Step-by-step explanation: We are given to find the characteristic polynomial of the following 3 × 3 matrix A with unknown variable x :

$A=\left[\begin{array}{ccc}0&0&1\\4&-3&4\\-2&0&-3\end{array}\right].$

We know that

for any square matrix M, the characteristic polynomial is given by

$|M-xI|=0,$ where I is an identity matrix of same order as M.

Therefore, the characteristic polynomial of matrix A is

$|A-xI|=0\\\\\\\Rightarrow \left|\left[\begin{array}{ccc}0&0&1\\4&-3&4\\-2&0&-3\end{array}\right]-x\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]\right|=0\\\\\\\Rightarrow \left|\left[\begin{array}{ccc}-x&0&1\\4&-3-x&4\\-2&0&-3-x\end{array}\right] \right|=0\\\\\\\Rightarrow -x(3+x)^2+1(0-6-2x)=0\\\\\Rightarrow (x+3)(-3x-x^2-2)=0\\\\\Rightarrow (x+3)(x^2+3x+2)=0\\\\\Rightarrow x^3+6x+11x+6=0.$

Thus, the required characteristic polynomial of the given matrix A is $x^3+6x+11x+6=0.$

6 0

3 years ago