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
liraira [26]
2 years ago
8

Which of the following equations have exactly one solution? Choose all answers that apply: A:58x+52=78x−78 B:−78x+52=−52x−78 C:5

2x+52=52x−78 D:58x+52=−78x−78
Mathematics
2 answers:
Reil [10]2 years ago
8 0

For this case we solve each of the equations:

Option A:

58x+52=78x-78\\58x-78x= -78-52\\-20x = -130

x = \frac {-130} {- 20}\\x = \frac {13} {2}

It has a solution!

Option B:

-78x + 52 =-52x-78\\-78x + 52x=-78-52\\-26x = -130

x=\frac{-130}{-26}\\\\x=5

It has a solution!

Option C:

52x + 52=52x-78\\52x-52 = -78-52\\0 = -130

The equation has no solution!

Option D:

58x + 52=-78x-78\\58x + 78x = -78-52\\136x = -130

x = - \frac{130} {136}\\x = - \frac{65} {68}

It has a solution!

Answer:

Option A, B, D

irga5000 [103]2 years ago
5 0

Answer:

A,B,C

Step-by-step explanation:

You might be interested in
Explain why the following statement IS NOT a statistical question. "How
deff fn [24]

Answer:

Because it only has one answer and there are no variety of answers.

hope this helps

7 0
2 years ago
Consider the following proposed proof by contradiction that for all positive integers n, 3n > 2.
laila [671]

Answer:

The proof contains a simple direct proof, wrapped inside the unnecessary logical packaging of a proof by contradiction framework.

Step-by-step explanation:

The proof is rigourous and well written, so we discard the second answer.

This is not a fake proof by contradiction: it does not have any logical fallacies (circular arguments) or additional assumptions, like, for example, the "proof" of "All the horses are the same color". It is factually correct, but it can be rewritten as a direct proof.

A meaningful proof by contradiction depends strongly on the assumption that the statement to prove is false. In this argument, we only this assumption once, thus it is innecessary. Other proofs by contradiction, like the proof of "The square root of 2 is irrational" or Euclid's proof of the infinitude of primes, develop a longer argument based on the new assumption, but this proof doesn't.

To rewrite this without the superfluous framework, erase the parts "Suppose that the statement is false" and "The fact that the statement is true contradicts the assumption that the statement is false. Thus, the assumption that the statement was false must have been false. Thus, the statement is true."

7 0
3 years ago
Use the Remainder Theorem to find the remainder for (2x^3-3x^2+6)/(x-1) and state whether or not the binomial is a factor of the
Bezzdna [24]

Answer:

Remainder= 5, and the binomial (x-1) is not a factor of the given polynomial.

Step-by-step explanation:

Given polynomial is (2x^3-3x^2+6) , we have to divide this with a binomial [tex}(x-1)[/tex] using remainder theorem.

Remainder theorem says if (x-a) is a factor then remiander would be f(a)

Therefore for (x-1), \ {we find}\  f(1)}

f(1)=(2\times 1^3-3\times1^2+6)\\1^3 =1\\1^2=1\\Substituting \ this \ above\\f(1)= (2-3+6)=5

Thus the remainder is 5 and since it is not 0 , so the binomial (x-1) is not a factor of the given polynomial.

6 0
2 years ago
Read 2 more answers
If two angles are supplementary , they must
-BARSIC- [3]
If the two angles are supplementary, they must equal 180 degrees

7 0
3 years ago
Read 2 more answers
12.93 is what percent of 172.40?
Maurinko [17]

Answer:

<h2>7.5%</h2>

Step-by-step explanation:

METHOD\ 1:\\\\\begin{array}{ccc}172.4&-&100\%\\12.93&-&p\%\end{array}\qquad\text{cross multiply}\\\\172.4p=(12.93)(100)\\\\172.4p=1293\qquad\text{divide both sides by 172.4}\\\\p=7.5\ (\%)

METHOD\ 2:\\\\\dfrac{12.93}{172.4}\cdot100\%=\dfrac{1293}{17240}\cdot100\%=0.075\cdot100\%=7.5\%

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve. <br> - 1/3b = 9<br><br> A. -3 <br> B. 3<br> C. - 27<br> D. 27
    15·2 answers
  • The height of one cottage will be 3 meters, and the volume will be 108 cubic meters. What tool can help you find different dimen
    7·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csqrt%7B64%7D%20%3D" id="TexFormula1" title="\sqrt{64} =" alt="\sqrt{64} =" align="absmiddle
    12·2 answers
  • Which expression is equivalent to 6(4x + 3y)?
    8·2 answers
  • Divide. Write the quotient in lowest terms.<br> Help PLSSS I will give brainest
    9·1 answer
  • Find the perimeter and area of the parallelogram shown below
    9·1 answer
  • Please help!<br> Anwser photo below
    6·2 answers
  • PLS HELP I REALLY NEED THE ANSWER
    7·1 answer
  • I’m confused with this question
    11·2 answers
  • Looking up, Felipe see two two hot air balloons in the sky shown. He determines that the lower hot air balloon is 515 meters awa
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!