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3 years ago

What is the perimeter of a triangle got by joining the midpoints of a triangle of sides 8 cm, 4cm

Mathematics

2 answers:

Rudiy273 years ago

8 0

Answer:

the perimeter is 9

Step-by-step explanation:

a midpoint cuts a line in half

this means 8 becomes 4

6 becomes 3

and 4 becomes 2

4, 3,and 2 added together give you 9

a perimeter is the sum of the sides added together

ELEN [110]3 years ago

8 0

Answer:

Remember the formula for finding the perimeter of a triangle. For a triangle with sides a, b and c, the perimeter P is defined as: P = a + b + c. What this formula means in simpler terms is that to find the perimeter of a triangle, you just add together the lengths of each of its 3 sides.

Step-by-step explanation:

so yeah hope it helped

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GenaCL600 [577]

Answer:

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Step-by-step explanation:

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3 years ago

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andreev551 [17]

Answer:

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Step-by-step explanation:

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3 years ago

Prove that if the real-valued function f is strictly increasing, then f is oneto-one.

Alona [7]

Answer:

See proof below

Step-by-step explanation:

Let x,y be arbitrary real numbers. We want to prove that if x≠y then f(x)≠f(y) (this is the definition of 1-1).

If x≠y, we can assume, without loss of generality that x<y using the trichotomy law of real numbers (without loss of generality means that the argument in this proof is the same if we assume y<x).

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4 years ago

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Step-by-step explanation:

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3 years ago

A water well is to be drilled in the desert where the soil is either rock, clay or sand. The probability of rock P(R)equals=0.

GaryK [48]

The tree diagram for the probability is shown below

P(Clay|Positive) is read 'Probability of Clay given the result is Positive'.

This is a case of conditional probability.

The formula for conditional probability is given as
P(Clay|Positive) = P(Clay∩Positive) ÷ P(Positive)

P(Clay∩Positive) = 0.21×0.48 = 0.1008

P(Positive) = P(Rock∩Positive) + P(Clay∩Positive) + P(Sand∩Positive)
P(Positive) = (0.53×0.53) + (0.21×0.48) + (0.26×0.75)
P(Positive) = 0.2809 + 0.1008 + 0.195
P(Positive) = 0.5767

Hence,
P(Clay|Positive) = 0.1008÷0.5767 = 0.175 (rounded to 3 decimal place)

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3 years ago