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3 years ago

Please help me on number 10 and 11

Mathematics

1 answer:

denpristay [2]3 years ago

3 0

To solve number 10, you should do just as it says and type it into a calculator. To save you the trouble, I have already done this. It equals approximately 4.26.

As for number 11, you have not included the whole question, so there is not currently enough information to solve it.

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A triangle has one side that is 5 inches long and another that is 7 inches long. How many different lengths, in inches,are possi

lubasha [3.4K]

Answer:

2 < c < 12

Step-by-step explanation:

Let the last side of the triangle = c

The sum of any two sides must be greater than the third side. Let's say we have triangle ABC, where a = 5 inches and b = 7 inches

a + b > c (1)

a + c > b (2)

b + c > a (3)

From (1);

a + b > c

7 + 5 > c

c < 12

From (2):

a + c > b

7 + c > 5

7 - 5 < c

c > 2

From (3):

b + c > a

5 + c > 7

c > 7 - 5

c > 2

So the possible lengths of c are: 2 < c < 12

3 0

3 years ago

A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40% of these ho

riadik2000 [5.3K]

Answer:

Step-by-step explanation:

Suppose F represents the value that a room is unlocked.

Then, we can assume that the probability of unlocked homes is:

P(unlocked homes) = P(U)

P(unlocked homes) = 40%

P(unlocked homes) = 0.40

Also, let us represent the value of the locked room with G.

P(locked homes) = P(G)

P(locked homes) = (1 - 0.40)

P(locked homes) = 0.60

Let the probability of selecting a correct key be P(S)

It implies that for the agent to use 3 keys, we have a combination of $^8C_3$ possible ways for the set of keys.

Now; since only one will open the house, then:

P(select correct key) = P(S)

$P(S) = \dfrac{ (^1_1) (^7_2) }{ ^8_3 }$

$P(S) = \dfrac{21}{56}$

P(S) = 0.375

Finally, for the real estate agent to have access to specific homes supposing the agent select three master keys at random prior to the time he left his office, Then:

P(F ∪ (G∩S) = P(F) + P(G∩S)

P(F ∪ (G∩S) = P(F) + P(G) × P(S)

P(F ∪ (G∩S) = 0.40 + (0.60×0.375)

P(F ∪ (G∩S) = 0.40 + 0.225

P(F ∪ (G∩S) =0.625

5 0

3 years ago

Pls need help!!!! Giving brainliest to the person that gives me the right awnser

jeka57 [31]

Answer:

you only have the answer choices not the question itself

could you please attach the question so i can help?

6 0

3 years ago

Solve each multi-step equation. Show your work. A - 2 + 3 = -2

Alex17521 [72]

Answer:

a is -3

Step-by-step explanation:

negative 3 minus 2 is negative 5 plus 3 is negative 2

8 0

3 years ago

My son is 9 leas than 1/2 my age. if i am 34 how old is my son?

kirza4 [7]

Answer:

Step-by-step explanation:

Your son is half your age minus 9, so half of 34 is 17. 17 - 9 = 8

7 0

3 years ago