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
Harlamova29_29 [7]
3 years ago
7

Alguien lo entiende y sabe?!!​

Mathematics
1 answer:
UNO [17]3 years ago
8 0

Answer:  What the hell is this. I don’t understand a word

Step-by-step explanation:

You might be interested in
Giving brainliest! Please show the working out
tiny-mole [99]

Answer:

see explanation

Step-by-step explanation:

(a)

OC = OB ( both radii of the circle )

Thus Δ BOC is isosceles with congruent base angles.

∠ BOC = ∠ BCO = 50°

(b)

∠ ACB = 90° ( angle in a semicircle ), then

∠ ACO = 90° - 50° = 40°

OA = OC ( both radii of the circle )

Thus Δ ACO is isosceles with congruent base angles.

∠ BAC = ∠ ACO = 40°

7 0
3 years ago
Mr Smith's art class took a bus trip to an art museum. The bus averaged 65 miles per hour on the highway and 25 miles per hour i
Leya [2.2K]
Let x be the distance traveled on the highway and y the distance traveled in the city, so:
\left \{ {{x+y=375} \atop { \frac{1}{65}x+ \frac{1}{25}y =7}} \right.
 
Now, the system of equations in matrix form will be:
\left[\begin{array}{ccc}1&1&\\ \frac{1}{65} & \frac{1}{25} &\end{array}\right]   \left[\begin{array}{ccc}x&\\y&\end{array}\right] =  \left[\begin{array}{ccc}375&\\7&\end{array}\right]

Next, we are going to find the determinant:
D=  \left[\begin{array}{ccc}1&1\\ \frac{1}{65} & \frac{1}{25} \end{array}\right] =(1)( \frac{1}{25}) - (1)( \frac{1}{65} )= \frac{8}{325}
Next, we are going to find the determinant of x:
D_{x} =  \left[\begin{array}{ccc}375&1\\7& \frac{1}{25} \end{array}\right] = (375)( \frac{1}{25} )-(1)(7)=8

Now, we can find x:
x=  \frac{ D_{x} }{D} = \frac{8}{ \frac{8}{325} } =325mi

Now that we know the value of x, we can find y:
y=375-325=50mi

Remember that time equals distance over velocity; therefore, the time on the highway will be:
t_{h} = \frac{325}{65} =5hours
An the time on the city will be:
t_{c} = \frac{50}{25} =2hours

We can conclude that the bus was five hours on the highway and two hours in the city. 

8 0
3 years ago
Which of the following can cause market failure?
nalin [4]

Answer: C

Step-by-step explanation: not enough information

5 0
3 years ago
Write the following numerals in words <br><br> 7,350,023<br><br> 200,463<br><br> 21,000,000
pogonyaev
1) Seven million three hundred fifty thousand twenty-three
2) Two hundred thousand four hundred sixty-three
3) Twenty one million
8 0
3 years ago
Read 2 more answers
How do you trace this shape without lifting the pen and tracing the same line again? If possible, can you tell me the specific n
Ksenya-84 [330]
Issa 3d shape called a triangular pyrimid
6 0
3 years ago
Other questions:
  • Write 14 in scientific notation
    12·1 answer
  • Linda, Reuben, and Manuel have a total of $70 in their wallets. Reuben has $10 more than Linda. Manuel has 2 times what Linda ha
    9·1 answer
  • Solve for x: 3x − 5 = 2x + 6. need answer plz :(
    11·2 answers
  • The slope of the line through the points is 2. Which statement describes how the slope relates to the height of the water in the
    11·2 answers
  • I need help please.
    13·1 answer
  • A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after
    7·1 answer
  • What is the slope ration for the following triangle?
    6·1 answer
  • 2x + y = z solve for x
    5·2 answers
  • what is 0 + 0? I NEED HELP PLS RN RN IM GETTING GRADED ON THIS PLS HELP WILL MARK BRAINLIEST PLS HELP
    7·2 answers
  • Which statements accurately describe how to determine the y-intercept and the slope from the graph below? On a coordinate plane,
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!