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
fredd [130]
3 years ago
7

A conjecture and a portion of the flowchart proof used to prove the conjecture are shown.

Mathematics
2 answers:
Sever21 [200]3 years ago
5 0

Answer:

3x = 27

Step-by-step explanation:

The addition property of equality, which is used to justify this step in the proof, states that we can add the same number to both sides of an equation and maintain equality.  The only number we would want to add in this equation to solve it would be 1 (adding one cancels the subtracted 1); doing so cancels it on the left and gives us 27 on the right.

vova2212 [387]3 years ago
3 0
3x - 1 = 26

substitution property of equality

3x = 27

answer
3x = 27
You might be interested in
1.05555555556 as a fraction
strojnjashka [21]
That number as a fraction is 19/18
4 0
3 years ago
Read 2 more answers
18 - (-f) = 91 (With work please)
borishaifa [10]

18 - (-f) = 91

Subtracting a negative value changes to addition:

18 + f = 91

Subtract 18 from both sides:

F = 73

6 0
3 years ago
Read 2 more answers
An employee worked 160.5 hours in May, 160.4 hours in May, 165.75 hours in June and 152.25 hours in July.
Fudgin [204]
486.65 is the answer to the question
3 0
3 years ago
I need explanations for Mathematical Proofs.
erma4kov [3.2K]

Answer:

Proofs employ logic expressed in mathematical symbols, along with natural language which usually admits some ambiguity. In most mathematical literature, proofs are written in terms of rigorous informal logic.

According to Bleiler-Baxter & Pair [22], for a mathematician, a proof serves to convince or justify that a certain statement is true. But it also helps to increase the understanding of the result and the related concepts. That is why a proof also has the role of explanation.

There are many different ways to go about proving something, we'll discuss 3 methods: direct proof, proof by contradiction, proof by induction. We'll talk about what each of these proofs are, when and how they're used. Before diving in, we'll need to explain some terminology.

Although I will focus on proofs in mathematical education per the topic of the question, first and foremost proofs are so hard because they involve taking a hypothesis and attempting to prove or disprove it by finding a counterexample. There are many such hypotheses that have (had) serious monetary rewards available.

In logic and mathematics, a formal proof or derivation is a finite sequence of sentences (called well-formed formulas in the case of a formal language), each of which is an axiom, an assumption, or follows from the preceding sentences in the sequence by a rule of inference.

All mathematicians in the study considered proofs valuable for students because they offer students new methods, important concepts and exercise in logical reasoning needed in problem solving. The study shows that some mathematicians consider proving and problem solving almost as the same kind of activities.

More information for you..

https://youtu.be/V5tUc-J124s

https://youtu.be/dMn5w4_ztSw

\color{yellow}{}

3 0
3 years ago
Find sin theta if cot theta = -2 and cos theta < 0
Katarina [22]

cot(<em>θ</em>) = cos(<em>θ</em>)/sin(<em>θ</em>)

So if both cot(<em>θ</em>) and cos(<em>θ</em>) are negative, that means sin(<em>θ</em>) must be positive.

Recall that

cot²(<em>θ</em>) + 1 = csc²(<em>θ</em>) = 1/sin²(<em>θ</em>)

so that

sin²(<em>θ</em>) = 1/(cot²(<em>θ</em>) + 1)

sin(<em>θ</em>) = 1 / √(cot²(<em>θ</em>) + 1)

Plug in cot(<em>θ</em>) = -2 and solve for sin(<em>θ</em>) :

sin(<em>θ</em>) = 1 / √((-2)² + 1)

sin(<em>θ</em>) = 1/√(5)

6 0
3 years ago
Other questions:
  • If you want to compare two numbers and see which is greater, is it easier to use a decimal or a fraction? Group of answer choice
    7·1 answer
  • PLEASE JUST CHECK IT OUT AND TRY YOUR BEST TO ANSWER. I WILL DEFINITELY AWARD BRAINLIEST :)
    15·1 answer
  • What is the solution of_5(s_30)=10
    8·1 answer
  • What are the vertical and horizontal asymptotes of f(x)=2x/x-1
    14·2 answers
  • 3x-1=1-3x help fast please
    12·2 answers
  • What is 1/3 of 17, also please show check your answer and prove to me it's right. Thanks :)
    15·1 answer
  • Solve the following equation for : −4 + 8 = 24.
    10·2 answers
  • One, no, or infinitely many solutions?
    15·1 answer
  • Help me find the answer please
    9·2 answers
  • Find a linear differential operator that annihilates the given function. (Use D for the differential operator.) 4 ex cos 3x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!