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
kkurt [141]
3 years ago
12

Please help me with this question

Mathematics
2 answers:
djverab [1.8K]3 years ago
5 0

Answer:

The answer would be C

Step-by-step explanation:

The reason it is C, is because, if you add 13 to 3, you would get 16. Then, by dividing that by 2, you would get the desired answer of 8.

zzz [600]3 years ago
3 0

Answer:

c

Step-by-step explanation:

I just know because I worked it out on paper

You might be interested in
Point slope and slope intercept ​
tino4ka555 [31]

Answer:

Step-by-step explanation:

Observe what happens to y if we move from x = 1 to x = 9:  y decreases by 2.  Thus, the slope of the line in question is m = rise / run = -2/8, or -1/4.

Writing the equation in point-slope form, y - k = m(x - h), we get:

y - 7 = (-1/4)(x - 1)      (point-slope form)

Solving for y results in the slope-intercept form:

y = 7 - x/4 + 1, or

y = (-1/4)x + 8     (slope-intercept form)

5 0
3 years ago
Which of the following is not an inertial reference frame? Which of the following is not an inertial reference frame?
hammer [34]
An inertial reference frame is a frame of reference in which a body remains at rest OR moves with a constant LINEAR velocity.  Answer choices A, C, and D are moving linearly at a constant rate and are all inertial frames of reference.  Answer choice E is motionless, and is therefor an inertial frame of reference. Answer choice B is rotating at a constant rate.  Rotation is not an inertial frame of reference.
Therefor, the answer is B.
7 0
3 years ago
Who was the first person that created mathematics ?
iren [92.7K]

Mathematics encompasses many different types of studies, so its discovery can’t even be attributed to one person. Instead, mathematics developed slowly over thousands of years with the help of thousands of people!

How did it get started? No one can know for sure, but we can use our imaginations to think about how mathematicsmight have gotten its start. For example, if we go all the way back to prehistoric man gathering berries to eat, we can imagine how this basic task probably gave rise for a need for math. If you and your prehistoric buddy gathered a basket full of berries, you’d probably agree to split them evenly. First, you’d need to know how many berries you gathered. That means you’d need to count them. You might first need to come up with names for the basic units ofmeasurement. Is this how counting and the first numbers came about? No one knows, but you can see how this might be how it happened.

Similarly, division might have been born from the need to split that pile of berries evenly. How advanced didprehistoric man get with mathematics? Probably not far at all, but a need for certain mathematic principles likely arose from daily life and, as such, were discovered or created out of need rather than invented. Early learning eventually led to more advanced fields of mathematics, such as algebra, geometry, calculus, and trigonometry!

Because many mathematical discoveries were made as a result of necessity, it comes as no surprise that scientists believe that many basic mathematical functions, such as addition, multiplication, and the like, appeared thousands of years ago in various areas at the same time, including China, India, Mesopotamia, and Egypt.

The oldest clay tablets with mathematics date back over 4,000 years ago in Mesopotamia. The oldest written texts onmathematics are Egyptian papyruses. Since these are some of the oldest societies on Earth, it makes sense that they would have been the first to discover the basics ofmathematics.

More advanced mathematics can be traced to ancient Greece over 2,500 years ago. Ancient mathematician Pythagoras had questions about the sides of a right triangle. His questioning, research, and testing led to a basic understanding of triangles we still study today, known as the <span>Pythagorean </span>Theorem.

Most experts agree that it was around this time (2,500 years ago) in ancient Greece that mathematics first became an organized science. Since that time, mathematical discoveries have spurred other mathematicians and scientists to build upon the work of others, constantly expanding our understanding ofmathematics and its relation to the world around us.

Hope this helps! :)

7 0
3 years ago
Find the the angles of CBD
Serhud [2]

Answer:

125 degrees.

Step-by-step explanation:

m < CBD = m < A + m < C ( by the External Angle of a Triangle theorem).

=  58 + 67 = 125 degrees.

5 0
3 years ago
Read 2 more answers
Which polygon has the most sides?
Brut [27]

Answer:

It has 20 regular triangular faces, 30 square faces, 12 regular pentagonal faces, 60 vertices, and 120 edges.

Step-by-step explanation:

hope this helped


6 0
4 years ago
Other questions:
  • $2,100 principal earning 4%, compounded annually, after 4 years
    9·1 answer
  • Simplify (sinx - cosx) (sinx + cosx)
    8·1 answer
  • Write 0.575 as a fraction
    12·2 answers
  • What is 27% of 4000? Enter your answer in the box.
    7·2 answers
  • Can you help me with this?
    6·1 answer
  • Help me it’s a test !!! Please!!
    10·1 answer
  • Please answer both A and B
    12·1 answer
  • A random sample of 200 adult residents in the U.S reveals that the mean minutes of sleep they received the night prior to the in
    11·1 answer
  • HELP!<br><br> Tell wether the angles are adjacent, vertical, or neither.
    10·2 answers
  • Which is the best estimate for the length of a lady bug?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!