1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tanzania [10]
3 years ago
8

A trail is 2940 miles long. it begins in city a and ends in city

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
5 0
In this question, the trail is 2940 miles long and Manfred is already hiking the 3/7 of the trail. You are asked how many miles he has a hike. Then to find it you just need to multiply the trail length with the ratio of hike/total trail. The calculation would be:

2940 miles * 3/7 = 1260 miles
You might be interested in
The 3 × 3 matrix P satisfies the matrix equation P^2 = P.
riadik2000 [5.3K]

Answer:  The answers are given below.

Step-by-step explanation:  Given that a  3 × 3 matrix P satisfies the matrix equation P² = P.

We are to

(a) find the possibilities for the determinant of P.

(b) explain the reason behind there are no other possibilities.

(c) give an example of P, for each possible determinant.

(a) According to the given information, we have

P^2=P\\\\\Rightarrow P^2-P=0\\\\\Rightarrow P(P-I)=0\\\\\Rightarrow P=0,~~~P=I.

So, P can be either a zero matrix of order 3 or an identity matrix of order 3.

If P = 0, then det(P) = 0     and     if P = I, then det(P) = 1.

Therefore the possible determinants of P are 0 and 1.

(b) There can be any other determinant other than 0 and 1, because if so, then the given equation P² = P will not be satisfied.

(c) If |P| = 0, then the matrix P can be can be of the form as follows:

P=\left[\begin{array}{ccc}0&0&0\\0&0&0\\0&0&0\end{array}\right] .

If |P| = 1, the the matrix P can be of the form as follows :

P=\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right] .

Thus, all the parts are answered.

4 0
3 years ago
Please help, this is a chapter on Derivatives.
horsena [70]

Answer:

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
NEED HELP Find values for a, b, c, and d so that the following matrix product equals the 2X2 identity matrix. Explain or show ho
ehidna [41]

We want to find the values of a, b, c, and d such that the given matrix product is equal to a 2x2 identity matrix. We will solve a system of equations to find:

  • b = 1
  • a = -1
  • c = -2
  • d = -1

<h3>Presenting the equation:</h3>

Basically, we want to solve:

\left[\begin{array}{cc}-1&2\\a&1\end{array}\right]*\left[\begin{array}{cc}b&c\\1&d\end{array}\right] = \left[\begin{array}{cc}1&0\\0&1\end{array}\right]

The matrix product will be:

\left[\begin{array}{cc}-b + 2&-c + 2d\\a*b + 1&a*c + d\end{array}\right]

Then we must have:

-b + 2 = 1

This means that:

b = 2 - 1 = 1

  • b = 1

We also need to have:

a*b + 1 = 0

we know the value of b, so we just have:

a*1 + b = 0

  • a = -1

Now the two remaining equations are:

-c + 2d = 0

a*c + d = 1

Replacing the value of a we get:

-c + 2d = 0

-c + d = 1

Isolating c in the first equation we get:

c = 2d

Replacing that in the other equation we get:

-(2d) + d = 1

-d = 1

  • d = -1

Then:

c  = 2d = 2*(-1) = -2

  • c = -2

So the values are:

  • b = 1
  • a = -1
  • c = -2
  • d = -1

If you want to learn more about systems of equations, you can read:

brainly.com/question/13729904

4 0
3 years ago
Determine whether the triangles are similar. If they are, state how (AA , SSS, SAS -). And choose the correct similarity stateme
velikii [3]

Answer:

WHAT THE FRACTION IS THIS!!!!

Step-by-step explanation:

i dont know what kind of math this is but this takes geomatry and mathematical observations to get it correct.

4 0
3 years ago
Use the box plot to explain what you know about the spread of this data set.
k0ka [10]

Answer:

The Middle is 50, The outliers are 20 and 75

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Find the y-intercept of the following equation. Simplify your answer. 4x + y = 7
    5·2 answers
  • 4. There are 25 students in a college math class.
    10·1 answer
  • What is the point slope form of (2,0)(4,-2)
    5·1 answer
  • Henry recorded how many pounds of fruits and vegetables his
    7·2 answers
  • Jimmy is on the diving team at his school. The quadratic function graphed on the coordinate plane below represents one of Jimmy'
    13·2 answers
  • This graph shows how long, in minutes, it takes Malaya run her miles. How
    15·1 answer
  • Choose the correct answer.
    11·1 answer
  • Help anyone please please please
    9·1 answer
  • I want to be a professinal rapper like Tupac Nle choppa and dababy but I can't cause I'm afraid I might last two weeks cause I'm
    5·2 answers
  • A study on students drinking habits wants to determine the true average number of alcoholic drinks all uf underclassmen students
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!