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2 years ago

The numbers 1 through 15 are written on cards. One card is chosen at random. Event A is choosing a

Mathematics

1 answer:

lana [24]2 years ago

6 0

Step-by-step explanation:

the probability is always the number of desired cases over the number of all possible cases.

in our situation we have 15 cards.

that is the total possible cases when a random card is chosen.

how many desired cases do we have ?

a number NOT a multiple of 5.

how many are there ?

it is easier to say how many numbers there are being a multiple of 5 : 5, 10, 15

so, 3 numbers out of the 15 are multiple of 5.

that means

15 - 3 = 12 numbers of the 15 are NOT multiples of 5.

so, the probability to draw a card that is not a multiple of 5 is

12/15 = 4/5 = 0.8

the information about event B and even numbers is irrelevant for the question.

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A city park is in the shape of a square. The area of the park is 441 yards2. How many feet long is one side of the park? A) 7 fe

IceJOKER [234]

Answer:

One side of the park is 63 feet.

C is the correct option.

Step-by-step explanation:

We have been given that the shape of the city park is a square and the area if the park is 441 square yards.We have to find the side of the park.

We know that the four sides of a square is equal and the area is given by

$A=\text{(side)}^2$

On substituting the value of area, we get

$441=\text{(side)}^2$

Take square root both sides and ignore the negative values of side

$\sqrt{441}=\text{side}$

On simplifying, we get

Side = 21 yards

Now, we know that

1 yard = 3 feet

Hence, we have

21 yards = 3×21 = 63 feet

Therefore, one side of the park is 63 feet.

C is the correct option.

3 0

3 years ago

A triangle ABC is inscribed in the circle, (ABC = 65° and AB=AC. Find (BDC.

podryga [215]

Answer:

∠BDC=50°

Step-by-step explanation:

∠BDC=∠A[angles at the same segment)

∠A= 180-(65+65)=180-130= 50°

so, ∠BDC=50°

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3 years ago

Jom!

andrey2020 [161]

Answer:

Step-by-step explanation:

5 0

3 years ago

Humans have a normal body temperature of 98.6 F A temperature, x, that differs from normal by at least 2°F is considered unhealt

Romashka-Z-Leto [24]

Answer: 98.6 - x ≥ 2 or x - 98.6 ≥ 2

Step-by-step explanation:

Since, the normal temperature = 98.6° F

Also, the temperature that differs from normal by at least 2°F is considered unhealthy.

If the temperature is x degree F,

Then, we have two conditions,

Condition 1 : x > 98.6,

The difference between 98.6 and x = x - 98.6

Then the inequality be,

x - 98.6 ≥ 2

Condition 2 : x < 98.6

The difference between 98.6 and x = 98.6 - x

Then the inequality be,

98.6 - x ≥ 2

3 0

3 years ago

What's the improper fraction for 3 and 5/6ths?

wlad13 [49]

The correct answer is 23/6. Hope this helps.

5 0

3 years ago