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2 years ago

9

A group of 13 friends were planning a trip. On the night before they left they made a lot of phone calls. Each friend talked to

every friend at least once. What is the fewest phone calls that would have been made.

1 answer:

gavmur [86]2 years ago

6 0

I believe 156 because each person would have had to make 12 phone calls and there are 13 people so 12x13

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The base is a square 16m 6m

Ostrovityanka [42]

base is a square 16m 6m

Step-by-step explanation:

A square is a regular quadrilateral and it has four equal sides and four equal angles (90 degree angle or right angles).

A square quadrilateral with vertices ABCD would be denoted by ABCD. The perimeter of a square (quadrilateral) is given by:

P = 4a

Where a is the length of each side.

Perimeter of the square:

P = 4a

P = 4 × 16 cm

P = 64 cm

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3 years ago

Which function is nonlinear?

lutik1710 [3]

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Step-by-step explanation:

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3 years ago

The present age of father is thrice as old as the age of daughter 5 years ago. If 5 years hence ,the age of father will be twice

pav-90 [236]

Answer:

<em>Hence the daughter's present age is 15 years</em>

<em>The fathers present age is 35 years</em>

<em></em>

Step-by-step explanation:

Let the present age of daughter be x

Let the present age of father be y

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Daughter's age = x - 5

Fathers age = y - 5

If the present age of father is thrice as old as the age of daughter 5 years ago, then;

y - 5 = 3(x-5)

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y = 3x - 10 .... 1

In 5 years time;

Daughters age = x + 5

Fathers age = y + 5

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x = 15

Since y = 2x + 5

y = 2(15) + 5

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<em>The fathers present age is 35 years</em>

<em></em>

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2 years ago

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Answer:

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Step-by-step explanation:

Each question can be solved as a rule of three with direct measures, that means we have a cross multiplication.

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Answer:

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Step-by-step explanation:

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2 years ago