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vfiekz [6]
3 years ago
15

2/3 of the pens in a box are blue. 1.2 of them are black. The rest of them are red. There are 36 more blue pens than red pens. H

ow many pens are there altogether? Also explain please, will make brainliest on the best answer.
Mathematics
2 answers:
Montano1993 [528]3 years ago
8 0
For every 5 red = to 15 blue 5:15
Phoenix [80]3 years ago
4 0

Answer:

Option B. For every 5 red pens, there are 15 blue pens.

Step-by-step explanation:

The statement expressed the ratio of the red pens to the total as 1 : 4.

This means that for every red pen in the box, there are 4 blue pens.

So, statement A is correct.

Let's skip B an look at other statements as well:

For C, the ratio will be 15 : 60 which translates to 1 : 4. So C is true.

Let's look at D.

This is an interesting one. The problem defines 18 as blue. So it means that 24 - 18 = 6

6 pens will be blue. Again 6 : 24 gives us 1 : 4. So D is true.

B gives us 5 : 24 which is not true.

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A person creates a game in which a person pays $5.00 to play. Then, they draw a single card from a standard shuffled deck of car
valkas [14]

Answer:

Step-by-step explanation:

The expected value is the probability of an event multiplied by the number of times the event happens. And if there is more than 1 event, the expected value is the sum of those.

There are 52 cards in a deck.

There are 12 face cards in a deck. (gain 10)

There are 4 ace in a deck. (gain 20)

Any other card is 36 of them. (lose 5)

The probability of face card is 12/52

The probability of ace is 4/52

The probability of any other card is 36/52

Thus the expected values is:

(12/52)(10) + (4/52)(20) + (36/52)(-5) = $0.38

3 0
3 years ago
Read 2 more answers
Need help GET BRAINLISTS #8
gladu [14]

Answer: 6.7 mm

Step-by-step explanation:

The area of a square is equal to side(side), but is also equal to 1/2(apothem)(perimeter).

The apothem is the perpendicular distance from the center of the square to the midpoint of its side.

We can use these formulas to find the apothem and use the pythagorean theorem to find the hypotenuse (slant height).

Area of square = 9(9) = 81

Area of square = 1/2(apothem)(perimeter)

Perimeter = 4(9) = 36

81 = 1/2(apothem)(36)

162 = apothem(36)

apothem = 4.5

Pythagorean theorem: a^{2} + b^{2}  = c^{2}

Plug the apothem and the given height into the equation:

4.5^{2} + 5^{2}  = x^{2} (x being the slant height)

20.25 + 25 = x^{2}

x = \sqrt{45.25}

x ≈ 6.7

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3 years ago
Please help me asap!!!
blondinia [14]

Answer:

the answer is 120.6                     (:

Step-by-step explanation:

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3 years ago
What number multiplied by itself 3 times equals 9?
Harlamova29_29 [7]
The answer is 3 3x3x3=9

Hope this helped:)
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3 years ago
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What is the additive inverse of 2/3
MissTica

Answer:

Your answer would be -2/3.

Step-by-step explanation:


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3 years ago
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