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erastova [34]
3 years ago
9

Which polygons have no right angles?

Mathematics
2 answers:
andreev551 [17]3 years ago
7 0
Octogons, and hexagons don’t have right angles
asambeis [7]3 years ago
4 0

Answer:

Rhombus,and pentagon

Step-by-step explanation:

a rhombus has only obtuse or acute angles same with the pentagon.

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Five friends decided to get together to bake cookies for a fundraiser. In total, they baked 144 cookies and packaged them in doz
Irina-Kira [14]
All you have to do is 144/12=12 so therefore there are 12 packages of cookies they had to bake for a fundraiser.
3 0
3 years ago
Read 2 more answers
Micheal is three time as old as Jean in seven year he will be twice old as she will be then how old are they both
PtichkaEL [24]

Answer:

Michael is 21 years old while Jean is 7 years old.

Step-by-step explanation:

Given that Micheal is three times as old as Jean, but in seven years he will be twice old as she will be, to determine how old are they both at this time, the following calculation must be performed:

M = 3J

M + 7 = 2J + 7

7 = 1/3

7 x 3 = 21

21 + 7 = 28

7 + 7 = 14

21 / 7 = 3

28 / 14 = 2

 

Therefore, Michael is 21 years old while Jean is 7 years old.

5 0
3 years ago
Which ordered pair is shown on the graph?
Oliga [24]

Answer:

(2,4)

Step-by-step explanation:

look at the x axis and y axis and see where they meet

6 0
3 years ago
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The prism shown has a volume of 300 m3. A prism has a length of 7.5 meters, width of w, and height of 5 meters. What is the widt
Shalnov [3]

Answer:

6

Step-by-step explanation:

7.5*5=37.5

200/37.5=6

3 0
3 years ago
Read 2 more answers
Show 2 different solutions to the task.
laila [671]

Answer with Step-by-step explanation:

1. We are given that an expression n^2+n

We have to prove that this expression is always is even for every integer.

There are two cases

1.n is odd integer

2.n is even integer

1.n is an odd positive integer

n square is also odd integer and n is odd .The sum of two odd integers is always even.

When is negative odd integer then n square is positive odd integer and n is negative odd integer.We know that difference of two odd integers is always even integer.Therefore, given expression is always even .

2.When n is even positive integer

Then n square is always positive even integer and n is positive integer .The sum of two even integers is always even.Hence, given expression is always even when n is even positive integer.

When n is negative even integer

n square is always positive even integer and n is even negative integer .The difference of two even integers is always even integer.

Hence, the given expression is always even for every integer.

2.By mathematical induction

Suppose n=1 then n= substituting in the given expression

1+1=2 =Even integer

Hence, it is true for n=1

Suppose it is true for n=k

then k^2+k is even integer

We shall prove that it is true for n=k+1

(k+1)^1+k+1

=k^1+2k+1+k+1

=k^2+k+2k+2

=Even +2(k+1)[/tex] because k^2+k is even

=Sum is even because sum even numbers is also even

Hence, the given expression is always even for every integer n.

3 0
3 years ago
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