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
Bogdan [553]
3 years ago
7

State whether the following statements are true or false, and explain your reasoning.

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0

Answer:

Step-by-step explanation:

shbhebvhbhv

Masja [62]3 years ago
6 0

Answer:

Step-by-step explanation:

a) A square is a rectangle.   True

Reason: Property of Rectangle: (i) Opposite sides are equal and parallel. (ii) Each angle is 90 (iii) Diagonals are equal and bisect each other.

A square hold all these properties. A square is  a rectangle.

b) A polygon with 21 sides has 432 possible diagonals. False

Reason: Number of diagonals of a polygon = \frac{n(n-3)}{2}

n --> number of sides of a polygon.

= \frac{21*18}{2} = 189 diagonals

c) All three angles in an Isosceles triangle are equal. False

Reason: In an isosceles triangle, two angles are equal.

If three angles are equal, then that is an equilateral triangle.

d) The measures of the exterior angles of a nonagon, a nine-sided figure, have a sum of 360°. True.

Reason: The sum of measures of the exterior angles  of any polygon is 360

You might be interested in
What is the first 10 didgets of pie
jeka94

Answer:

3.1415926535 8979323846

Step-by-step explanation:

4 0
2 years ago
Please help thanks❗​
Fynjy0 [20]

Answer:

U, V

Step-by-step explanation:

4 0
3 years ago
What is the quotient of 3,968 ÷ 32​
Arisa [49]

Answer:

124

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
( x + 3 )( y + 2 ) = xy - 5<br> ( x + 2 )( y - 3 ) = xy
Paraphin [41]

Answer:

xy+2x+3y+6=xy-5 .............(1)

xy-3x+2y-6=xy.....,.,(2)

2x+3y=-11

-4x+2y=6

first equation multiply by 2

(2)*(2x+3y)=-11

4x+6y=-22

-4x+2y=6

8y=-16 y=(-2),,,,, x=(-2,5)

4 0
3 years ago
-2 (x + 3z) + 4x - 3y + 2z​
andriy [413]

Answer:

-2 (x + 3z) + 4x - 3y + 2z​

-2x-6x+4x-3y+2z

2x-4z-3y

hope it helps...

have a nice day!

6 0
3 years ago
Read 2 more answers
Other questions:
  • It takes Wayne 1/0 of an hour to walk a 1/6 mile park loop. What is Wayne's unit rate in miles per hour?
    7·1 answer
  • A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm.
    7·2 answers
  • What is the solution to 2x+8=3x-5
    13·2 answers
  • On Saturday, Mark sold 2 7/8 gallons of lemonade. On the same day, Regan sold 2/3 as much lemonade as Mark. How much lemonade, i
    12·1 answer
  • What is another way to infer to
    10·2 answers
  • A bottle of orange juice has 750 mg of vitamin C and has 6 servings. A bottle of cranberry juice contains 135 mg of vitamin C an
    9·1 answer
  • 2x = 3Y=4z=12 find the value of x square+y square + Z Square
    15·2 answers
  • At a school bake sale, a total of 40 cupcakes and muffins were sold. The total number of cupcakes sold was 12 more than the numb
    12·1 answer
  • if a Scientist records a jackrabbit traveling 140m in 7 s. At what do bead does the jackrabbit travel in meters per second​
    11·1 answer
  • U=1-3v/vt-w make t the subject<br> Answer for it
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!