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Mrac [35]
1 year ago
13

Match each expression with its value.

Mathematics
1 answer:
Nata [24]1 year ago
6 0

Answer:50 point

nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

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Side1 : 3x^2 − 4x − 1 (^to the second power)
Colt1911 [192]

9514 1404 393

Answer:

  A. 2x^2 +4

  B. 5x^3 -4x^2 +3x -12

  C. addition and subtraction of polynomials result in polynomials (closed)

Step-by-step explanation:

A. The total of the two side lengths is ...

  (3x^2 -4x -1) +(-x^2 +4x +5) = (3 -1)x^2 +(-4+4)x +(-1+5) = 2x^2 +4

__

B. The length of the third side is the difference between the total for all three sides and the total for the given two sides:

  (5x^3 -2x^2 +3x -8) - (2x^2 +4) = 5x^3 +(-2-2)x^2 +3x +(-8-4)

  = 5x^3 -4x^2 +3x -12

__

C. Addition of the two polynomials results in a polynomial. Subtraction of the two polynomials results in a polynomial. There is nothing here to indicate the set of polynomials is not closed under addition and subtraction.

7 0
3 years ago
Acute, obtuse or right triangle?
mart [117]

Answer:

right triangle

Step-by-step explanation:

it wouldn't be obtuse because obtuse is if one of the angles is more than 90 degrees. Plus you can make a box at the bottom corner.


5 0
3 years ago
Ex. 6. For each of these arguments determine whether the argument is correct or incorrect and explain why. a) Everyone enrolled
mojhsa [17]

Answer:

A) True

B) False

C) False

D) True

Step-by-step explanation:

A) Everyone enrolled in the university has lived in a dormitory. Mia has never lived in a dormitory. Therefore, Mia is not enrolled in the university.

True, because if Mia is enrolled in the university, then she must have lived in a dormitary.

B) A convertible car is fun to drive. Isaac’s car is not a convertible. Therefore, Isaac’s car is not fun to drive.

False, it is known that all convertible cars are fun to drive, but there is no information about inconvertible cars. Some of them may be fun to drive.

C) Quincy likes all action movies. Quincy likes the movie Eight Men Out. Therefore, Eight Men Out is an action movie.

False, Quincy likes all action movies, but also can like another movies. It is not said Quincy likes only action movie, so Eight Men Out can appear to be not action movie.

D) All lobstermen set at least a dozen traps. Hamilton is a lobsterman. Therefore, Hamilton sets at least a dozen traps.

True, Hamilton is a lobsterman and as all lobstermen he set at least a dozen traps.

6 0
3 years ago
Xian and his cousin Kai both collect stamps. Xian has 60 stamps, and Kai has 76 stamps. The boys recently joined different stamp
uranmaximum [27]
It will take them 5 months and they will each have 108 stamps
7 0
3 years ago
I need help with finding the area to this Triangle. This is Geometry by the way.
ycow [4]

Answer:

9 sq. units

Step-by-step explanation:

dimensions of rectangle are (7-3),(8-3)

or 4,5

area of rectangle=4×5=20

area of bottom Δ=1/2×4×2=4

area of top Δ=1/2×3×3=9/2

area of right triangle=1/2 ×5×1=5/2

area of Δ HIJ=20-(4+9/2+5/2)

=20-(4+14/2)

=20-(4+7)

=9 sq. units.

or area of triangle =1/2

| 3  5 |

| 7  3 |

|6   8 |

|3   5 |

=1/2[(9-35)+(56-18)+(30-24)]

=1/2[-26+38+6]

=1/2[-26+44]

=1/2(18)

=9 sq. units.

8 0
3 years ago
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