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Dahasolnce [82]
4 years ago
5

I need help with this question

Mathematics
1 answer:
Molodets [167]4 years ago
4 0

Answer:

wow pretty hard

Step-by-step explanation:

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What is the value of X?<br> A 57 B 48 C 38 D 28
olga_2 [115]

Answer: D. 28

Step-by-step explanation:

The 3 interior angles of a triangle always add up to 180

Soooo:

95 + 57 = 152

180 - 152 = 28

5 0
3 years ago
Please help math 1-2 high school solving proofs.
Dafna1 [17]

Answer:

1= A

2= C

Step-by-step explanation:

I think this is right I'm not sure but I think it is.

hope this helps :)

3 0
3 years ago
When solving a system of equations, Jared found y = x + 10 for one equation and substituted x + 10 for y in the other equation.
myrzilka [38]
Both are correct they just chose a different variable to solve for first. they will both get correct answers if they do the rest correctly.
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3 years ago
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Describe the difference between total surface area and lateral surface area
Diano4ka-milaya [45]

Answer:

The total surface area of a solid is the sum of the areas of all of the faces or surfaces that enclose the solid, the lateral surface area of a solid is the surface area of the solid without the bases

7 0
3 years ago
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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

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3 0
3 years ago
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