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
erma4kov [3.2K]
3 years ago
10

On his math test, Balavan wrote that a four-sided polygon that has at least two right angles must be a rectangle or a square. De

nna wrote that a four-sided polygon needs at least three right angles to be a rectangle or a square. Who is right? Explain your answer.
Mathematics
2 answers:
Nonamiya [84]3 years ago
7 0

Answer:

Denna is correct. The sum of the angles in a quadrilateral is 360°, so if 3 of the angles are 90°, the fourth must also be 90°, creating a rectangle or a square. A quadrilateral can be drawn with the angles 90°, 90°, 120°, and 60°, but it is not a rectangle. Balavan is incorrect.

e2020 sample response

Step-by-step explanation:


gregori [183]3 years ago
4 0
A quadrilateral with only 2 right angles could be a trapezoid so Balavan is wrong.  Denna is right because if 3 angles are right angles the the  fourth angle must also be a right angle and has to be a square or rectangle.
You might be interested in
Solve - 12x ≤ 72 and then plot the solution set on the number line.
Setler [38]

Answer:

(6,0)

Step-by-step explanation:

Used Desmos Scientific calculator.

6 0
3 years ago
Which expression is equivalent to (256x^16)^1/4<br> A.4x^2<br> B.4x^4<br> C. 64x^2<br> D. 64x^4
antiseptic1488 [7]

Given expression: (256x^{16})^{1/4}.

\mathrm{Apply\:exponent\:rule}:\quad \left(a\cdot \:b\right)^n=a^nb^n

=256^{\frac{1}{4}}\left(x^{16}\right)^{\frac{1}{4}}

256=4^4

256^{\frac{1}{4}}=\left(4^4\right)^{\frac{1}{4}}=4

\left(x^{16}\right)^{\frac{1}{4}}=x^{16\cdot \frac{1}{4}}=x^4

(256x^{16})^{1/4} =4x^4

<h3>Therefore, correct option is B option : B.4x^4</h3>
6 0
3 years ago
Read 2 more answers
Isaac invested $1,800 in an account paying an interest rate of 4.7%
bazaltina [42]

Answer:

$3584.86 or 3600 if rounded to the nearest 100 dollars

Step-by-step explanation:

1800(1.047)^15= 3584.86

you can plug this into a calculator

7 0
3 years ago
Read 2 more answers
A triangle has sides of lengths 4, 3, and 5. Is it a right triangle? Explain.
vlada-n [284]

Answer:

yes; 4² + 3² = 5²

Step-by-step explanation:

Pythagorean theorem.

In a right triangle the square of the hypotenuse is equal to  the sum of the squares of the other two sides. Hypotenuse is the longest side of the triangle.

4² + 3² = 5²

16 + 9 = 25

25 = 25  

7 0
3 years ago
Which algebraic expression is equivalent to the expression below?
inessss [21]
Using the formula a(b+c) = ab + ac, then 7(2x-6) = 14x - 42. The answer is D.
7 0
3 years ago
Other questions:
  • Multiple Choice. The circular base of a traditional tepee has a diameter of about 15 feet. Which of the following is the approxi
    8·2 answers
  • Can someone help me on 10 and 11 please
    10·1 answer
  • 3) x2+ y2 - x + 3y - 42 = 0<br> X+y=4
    5·1 answer
  • This is asking using the completing the square method
    12·2 answers
  • Emanuel was charged $32 for a 14 2/9km taxi ride What was the cost per kilometer?
    11·1 answer
  • 2x+4(7)+9-5 what is the answer
    9·1 answer
  • A car depreciated by 25% during the first year. If the car was purchased for 28,000 what is the car worth today? Show your work.
    10·1 answer
  • What's 2 divided by 9/10? I would really like to know. :)
    8·2 answers
  • What is the multiplicative inverse of zero?
    11·2 answers
  • Watch help video
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!