Eight times a number is not less than the sum of the number and fifty

1 answer:

4 0

If the number is n, then 8 times n ≥ n+50, and by subtracting n from both sides we get 8n-n ≥ 50 and 7n ≥50. Therefore, by dividing by 7, n ≥50/7

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The area of a regular heptagon can be found by breaking the heptagon into seven congruent triangles and then taking the sum of t

hichkok12 [17]

Answer:

True

Step-by-step explanation:

The area of a regular polygon is found by multiplying 1/2 times the apothem times the perimeter. The area for a single triangle is 1/2 times the height (which is the same as the apothem of a regular polygon) times the base (which is one of the sides of the regular polygon which you are multiplying by to find the perimeter of the polygon).

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2 years ago

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Urgent ! <br>i can't seem to solve this :(

Archy [21]

Answer: 15 cm to the highest total ; amount of triangles: 25

Step-by-step explanation: for the height just add 3 cm until you reach the top, which will give you 15 cm

for the amount just count them and for the top top layer count up to 9, which will give you 25 triangles.

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GrogVix [38]

1 11/25

= 36/25 = (6/5)^2

and

3 3/8

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2 years ago

Find the area of this question

oee [108]

The answer to this question whould be that the area is 20

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2 years ago

The nth term of a sequence is n^2 + 20.

Olegator [25]

Answer:

$\large\boxed{a)\ 21,\ 24,\ 29}\\\boxed{b)\ \text{five terms}}$

Step-by-step explanation:

$a_n=n^2+20\\\\a)\\\\\text{Substitute}\ n=1,\ n=2\ \text{and}\ n=3\ \text{to the }\ a_n:\\\\a_1=1^2+20=1+20=21\\\\a_2=2^2+20=4+20=24\\\\a_3=3^2+20=9+20=29$

$b)\\\\\text{You have to solve the inequality:}\\\\n^2+20$

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2 years ago